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| C4 1984 to 1996 |
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| Please visit Doug's Vette shop:
Corvette Repair
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Please talk to Ed for Vette parts:
Not Just Vettes
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| C1 1953 - 1962 | C2 1963 - 1967 | C3 1968 - 1982 | C4 1984 - 1996 | C5 1997 - 200? | General Q & A | |
| Title: | C4 Sys Warning Light Flashing |
| Date: | 12/24/1999 |
| Question: |
I jumped started my car yesterday and ever since the Sys Warning Light is flashing.
What could be the probelem?
- Rob |
| Answer: |
This light flashes due to general system faults. This light may flash
if the voltage drops below 9v. The most common cause of this light
flashing intermittently is an old or weak battery. Get the battery
checked and re-charge or replace the battery if necessary. If the
battery is ok then check the computer for codes because one or more of
the electrical systems may have a problem.
- The Vette Pros |
| Title: | Removing Worn Targa Top Screws |
| Date: | 12/1/1999 |
| Question: |
I have no problem in removing my targa top on my 84
but the #40 torque bolts on the top forward window
sill are starting to go bad and need replacing. How
do I get them out?
- Bob |
| Answer: |
If they are stripped you may have to drill them out.
- The Vette Pros |
| Title: | Bad Digital Dash Board |
| Date: | 11/26/1999 |
| Question: |
When do you know if the dash is bad or you have a short . Mine will go off
and then it will just come back on sometimes 10 minutes later.
- R13800 |
| Answer: |
The digital dash boards for 1989 and back had many problems. It may be
a short, bad dash unit, or a bad LCD (Liquid Crystal Display).
- The Vette Pros |
| Title: | 1996 Passive Entry System |
| Date: | 10/19/1999 |
| Question: |
Hi, I have a 96 LT4. This morning when I started it up to go to work I got a Passive Entry System light on the dash. I shut it down and restarted it hoping it would
reset. It did'nt. I got to work and left the car and sure enough it did not arm and lock. While at work I metered the battery and it indicated 3 volts as it should. When
I got in it after work the warning light was gone but the system still is dead. What is the Problem? (aside from it being a Vette!) The car has 31k miles and this is the
first problem. Thanks for any help.
- Tom |
| Answer: |
The key chain transmitters for the Passive Entry System are prone to problems.
Another 1996 Vette owner has already submitted a question about this (see the question
titled "1996 Keyless Entry System and LTPWS Light" asked on 9/20/1999). It may be the
battery in the key chain transmitter or the transmitter itself.
- The Vette Pros |
| Title: | 1996 MAF Screen |
| Date: | 10/9/1999 |
| Question: |
My question is; What is the purpose of the screen in the MAF? Do I need it? It seems to me that it would flow mare air without it. If it would help to remove it, how do I go about it?
- Whitey |
| Answer: |
The screen catches any debris that might get past the air filter and destroy your engine.
We would leave it in.
- The Vette Pros |
| Title: | 1996 Keyless Entry System and LTPWS Light | |
| Date: | 9/20/1999 | |
| Question: |
I have a burning question that no one I've talked to has been able to
answer. I have the factory alarm or keyless entry sys. and it has worked fine
for a while except that recently the door stopped unlocking when I walked up
to it. also it doesn't lock itself after I leave. Is there some code to turn
the alarm on and off? Oh I almost forgot one of the LTPWS is bad and the SYS
light keeps coming on, is there any way to turn this off without getting it
fixed?
- Ben | |
| Answer: |
GM has had problems with the transmitters for the keyless entry system.
Get the transmitter checked or buy a new one and have it coded for your
Vette. You should get the LWTPS sensors checked out the next time you have
your tires off their rims. The sensors are attached to the inside of
your rims and it's possible that their batteries are dead or they are malfunctioning.
- The Vette Pros |
| Title: | 1995 Storage | |
| Date: | 2/4/2000 | |
| Question: |
Could you help me I have a 95 Corvette with 26k miles on it and wish to put
it in storage for an extended period of time to truly uphold and preserve
it.
- Bill | |
| Answer: |
The best thing to preserve it would be NOT to store it and drive it! It's better for the
entire car if it is driven regularly. If you must store it, put up on jack
stand to take the weight off the suspension and tires. Add fuel stabilizer
to the gas and run it a bit to make sure it gets in the fuel lines and
injectors. Get a product to prevent moisture from building in the interior.
Buy something that repels mice and other animals because they like to build
homes and chew through everything. You could buy one of those big tent/bag
things and put your Vette in that.
- The Vette Pros |
| Title: | 1995 Outside Temperature Reading | |
| Date: | 1/31/2000 | |
| Question: |
I have a white 1995 corvette LT-1 with a ZF 6 speed transmission. It has 29500 miles on
it. The problem I am having is about 6 months ago the outside temperature reading would
drop down to -32 degrees for a while and the return to normal. After about 6 months of
this, it now sits on 50 degrees most of the time but still sometimes drops way down and
back up. I have changed the outside air temperature sending unit under the nose of the
car. Once that didn't fix it, I took it to a dealer and was told it wasn't getting the
required 5 volts to the sending unit and the control panel was bad so I have put a
remanufactured control panel (witch I purchased from the dealer) in the car.
Still no luck. Any help would be greatly appreciated.
- William Thomas | |
| Answer: |
The wiring may be wrong or frayed. The new and remanufactured parts may be bad.
- The Vette Pros |
| Title: | 1995 "SYS" Light and Outside Temperature Sensor | |
| Date: | 12/29/1999 | |
| Question: |
I have two questions concerning my 95 LT1. I left the lights on for about 3-4 hours while my
wife and I went shopping and when we returned to my Vette the battery was dead. I jump started
the battery and started back home. "SYS" started flashing on and off every 15 seconds or so.
Today when I started up my Vette everything seems to be back to normal. Did the system have to
reset itself ? My second question is my outside temperature indicator will work fine for
about 15-20 minutes then it will go crazy. It will go up to 50 (when the temp is around 40)
then drop down to -37. This cycle continues for anywhere from 15 minutes to one-half hour and
then maybe it will start reading correctly. I've looked under the hood for this sensor with no luck.
- Denny | |
| Answer: |
The "SYS" light will flash if the voltage drops below 9V. The light flashing intermittently
may have been the battery getting back up to a normal charge. Watch for the light, if it
happens again or the light comes on and stays on get the battery and the system checked.
It sounds like a bad outside temperature sensor. Get it checked.
- The Vette Pros |
| Title: | 1995 Smoke And Fumes Inside |
| Date: | 12/19/1999 |
| Question: |
I have a 1995 LTI Corvette that I have owned for several years and have
never had even a minor problem with. Last week I started the car and
drove for approximately 1/4 mile and began smelling strong oil (?) fumes
inside the car. I came to a stop light, rolled my windows down to determine if
it was my car or if maybe I was just close to another vehicle with exhaust
problems. Everything appeared ok so I continued my drive home. The
following day, I was driving to lunch and parked in line at a fast food restaurant
and I began smelling the fumes again but this time noticed that smoke was
inside the car. I panicked, turned the engine off, rolled down my windows to
release the fumes and sat there for a minute or two, turned the engine back on
and it quit. It's been a week and it hasn't happened again. My husband
seems to think it has something to do with the fuel injection. I plan on
having it serviced (time for an oil change anyway) but I was wondering if
anyone else has experienced this problem and could you provide some feedback so
I might be prepared when taking it to the shop.
- B. Hunnicutt |
| Answer: |
It sounds like an oil leak or a short in the electrical system. Have
this checked by a technician when you get it serviced.
- The Vette Pros |
| Title: | 1995 LTPWS Replacement |
| Date: | 11/7/1999 |
| Question: |
I recently purchased my first Corvette, a 1995 LT-1. It is
equipped with the Low Tire Pressure Warning System. The right rear tire
is not transmitting. Is replacing the module a job I can do myself?
Or does the module require some type of calibration that requires
special equipment.
- Steve Foster |
| Answer: |
We recommend taking this one to the GM dealer or a tire shop that has
the equipment to test these sensors after they have been replaced.
- The Vette Pros |
| Title: | 1995 Resonating Exhaust |
| Date: | 11/3/1999 |
| Question: |
Help - I have a 1995 Vette Convert with new Borla mufflers and the
resonation is so bad that my head aches. The mufflers have the required four
venturis but it doesn't help. I want the sound out the back and not up
through my seat. Do I have to live with this as the cost of improved
performance? How about straight pipes out with another muffler closer to the
engine?? I say this because my muffler man says the problem is that there
are no real tailpipes as in earlier years.
- Joe Bryant |
| Answer: |
Sorry there is not much you can do to quiet these mufflers down. There are companies that make
performace exhaust tailpipes. Contact Corvette Performance at (714) 347-1038. I don't think these will solve the
resonation problem but you could use the tailpipes instead of the Borla mufflers.
- The Vette Pros |
| Title: | 1995 Cooling System Cleaning |
| Date: | 10/20/1999 |
| Question: |
I have a'95 vette with the LT1 engine.I would like to back flush
cooling system,using a Prestone flush T. This is the type you put into
heater hose.Can I use this on my car? Which heater hose do I install it
in,if I can use it? I was told to put tablets in after putting in new
coolant to lubricate water pump.Have you heard of this?
- John |
| Answer: |
Yes you can install a Prestone Flush T on your Vette but we DO NOT
recommend it. It can cause problems such as leaks, overheating, etc.. .
We recommend draining the system, removing the thermostat, and then
flushing the system with a cleaner and lots of water. To really flush
your system, remove the bottom hose from the radiator and put it in a
bucket. Next, add water to the system with the engine running and let
the water run completely through the system. Take your Vette to a
radiator shop and have them professionally clean the system if you want
it back flushed. No, we have not heard of these tablets that lubricate the
pump.
- The Vette Pros |
| Title: | 1995 High Mileage |
| Date: | 10/14/1999 |
| Question: |
I just bought a 95 vette from the original owner and it appears to be
in excellent condition. The Chevy service department says it is one of the
cleanest and best kept vettes they have seen. I know the service manager
and trust him . It has 76000 miles on it( mostly highway miles). It
does not use oil, doesn't have any leaks in engine, transmission or
rear end. Is there any particular service that should be performed to
maintain its excellent record? I have never owned a vette nor a car
with high of miles. It has a new water pump, plugs, wires and ignition. It
has also been serviced every 3000 miles. Does this high of mileage
cause any concern?
- Mike |
| Answer: |
No, as long as you have the service records and the maintenance schedule
has been followed your Vette should last a long time.
- The Vette Pros |
| Title: | 1995 LT1 Performance Modifications |
| Date: | 9/24/1999 |
| Question: |
I have a 1995 Dark Purple Corvette that has the LT1 Engine.
I'm looking for ways to spice the LT1 up could you recommend some ways of
doing that! Here is some items that I've been looking at doing:
Port and polish cylinder heads
|
| Answer: |
Our opinions on the list in your question:
Port and polish cylinder heads
Modifying or buying a new intake manifold with more airflow and get the
cylinder heads professionally ported and polished are the most important
items on your list. Also, one of the inexpensive ways to increase low
end performance is to change the rear gear to a 370 ring and pinion.
|
| Title: | 1994 Antenna Won't Retract |
| Date: | 2/14/2000 |
| Question: |
I have a 1994 LT-1 with a radio antenna mast that won't retract. I want to
troubleshoot it, but don't know how to get to it.
- Billy Reed |
| Answer: |
First make sure the antenna motor has power. If you can here the motor
struggling than it has power and the insides of the motor are worn. Only buy a
Delco motor. The motor is way up behind the wheel well
above the huge muffler. These mufflers make it difficult to reach and
sometimes need to be lowered to get to all the wiring. This is not an easy
job and usually requires a hoist so we recommend taking it to a
professional.
- The Vette Pros |
| Title: | 1994 Engine Warm Up |
| Date: | 12/22/1999 |
| Question: |
I recently purchased a 1994, LT1, auto, corvette (35k) and it really is
a joy to ride. I only live 2 miles from work and it is a daily driver.
I am concerned about damaging the engine since I live so close to work. Is
there a proper amount of time I should take to "warm up" the engine
properly? Should I do a cool down at the end of the day?
- J. L. Arteta |
| Answer: |
Some reports say to let the engine reach operating temperature before
driving because this allows time for the fluids to warm up and flow
correctly. Other reports say to let the car idle for about a minute and
drive conservatively until the engine reaches normal operating
temperature because this allows the engine to reach the normal operating
temperature faster, which means less engine wear, an article I read
claimed this is how to make your engine last 100 - 300 thousand miles. I
(RJ) do the later and let the engine run for about a minute and then
drive conservatively until it reaches normal operating temperature.
Also, use a good synthetic motor oil. They do protect your engine from
wear better, especially on cold days. There are many ways to cool down at the end
of the day. I'll let you decide how to do that, as for your engine, just shut it off.
- The Vette Pros |
| Title: | 1994 Flaking Top |
| Date: | 12/1/1999 |
| Question: |
I have a 1994 LT1. great car. my question is about my lexon roof. lately the
clear coat on it has been flaking off in spots. I have heard of this
problem before. Is there a way to get the rest of it off? It looks terrible the way
it is, and will it need to be clear coated again? it seems that it does not
stick well to the surface. also i wash it by hand and only use turtle wax soap.
- Car24fann |
| Answer: |
The elements, sun and acid rain, can destroy these tops. Have a body
shop wet sand and polish the top. You can get the top clear coated
again but we feel it is not needed.
- The Vette Pros |
| Title: | 1994 Sport Seat Lumbar/back Support System |
| Date: | 11/25/1999 |
| Question: |
I'm a new owner of a '94 Vette (Coupe) and I'm having a slight problem
with my sport seats. The entire lumbar/back support system quit
working recently. Well almost.... I can hear the relays clicking and the air
pump only works in the deflate mode, it will not turn on to inflate the
bladders. I've looked at the obvious, the fuse and that appears to be
fine. I'm thinking it may be the pump itself or one of the relays, but
don't want to start throwing parts at it until I'm reasonably sure which one.
Any suggestions on where or how to start looking at the problem?
- Ed |
| Answer: |
Our guess is the pump is broken. Ed at Not Just Vettes sells them for
around $109.95.
- The Vette Pros |
| Title: | 1994 Clicking Noise |
| Date: | 11/18/1999 |
| Question: |
I have a 1994 LT1 w/20,000 miles, 6 speed coupe
Sometimes when I back up, it makes a kind of a growling noise...there doesn't seem, to be any grinding but more of a steady clicking with a rotating sound...maybe like the sound of a
baseball card in bicycle spokes. It only lasts a second, and then goes away. I haven't figured out yet when it happens, but I think it is when the car is cold...
Maybe you guys know the noise?
- Dan |
| Answer: |
We think it is your ABS (Automatic Brake System) setting itself. This is normal. Have it
checked by a professional to be safe!
- The Vette Pros |
| Title: | 1994 Cruise Control Quit | |
| Date: | 9/21/1999 | |
| Question: |
I have a 1994 corvette and the cruise control just quit. What could be the
problem?
- Don | |
| Answer: |
This is a very complex system that requires the electrical schematics to
diagnose correctly. Here are a few simple things to check, but if these
are ok than let the professionals fix this one. Check the fuse, check
for power and continuity at the vacuum pod switch and the 2 part brake
light switch behind the brake pedal.
- The Vette Pros |
| Title: | 1993 ZO7 Option Package | |
| Date: | 2/13/2000 | |
| Question: |
I have the ZO7 package. What do I have and what is good
and not so good about it?
- Tom Buckner | |
| Answer: |
You have the adjustable suspension package option. It is an
option that lets the driver select what type of handling they want. It is a
nice feature. The only negative thing is it uses Bilstein shocks that tend
to leak and go bad quickly.
- The Vette Pros |
| Title: | 1993 Gear Ratios And Chip | |
| Date: | 12/7/1999 | |
| Question: |
My car is presently equipped with an automatic transmission and a rear gear ratio of
approx 2.59(according to the seller). This is great for highway driving. The only
modification I have done was install muffler bypass pipes. The stock cats and resonator
are still in place. I'm looking for a little more performance, and considering going to
a 3.73 ratio in the rear. Would this ratio be too much for the street resulting in very
poor gas mileage?, or should I consider another ratio like the 3.55. The present gear
ratio seems to make the transmission shift into high gear for fuel economy too early.
I was hoping this gear ratio would correct this. What is your position on this change?
I am also looking to upgrade the computer chip. What would you recommend, and should I
have the rear gears in place before I select an upgraded chip?
- Ray Waszewski | |
| Answer: |
No a 3.73 gear ratio is not too much for a street Vette. This gear will work well with the
overdrive and should help with the early shifting. You will decrease fuel economy quite a
bit, it's the price you pay for performance. The gears will not effect the chip and vice
versa, you do not have to wait until the gears are in to install the chip.
- The Vette Pros |
| Title: | 1993 Keyless Entry Transmitter |
| Date: | 11/22/1999 |
| Question: |
I have two questions for you. I have a 93 vette and I'm having
problems keyless entry. I saw that you say this is common. I was hoping
that you could tell the best place to buy a new transmitter. Also I'm
looking to find out how many cars identical to it were made. Do you know
who I can talk to or where I can find this information.
- Tim |
| Answer: |
GM is the only place that we know that sells the transmitter. There are many books that have
production numbers. Check out the "Corvette Black Book" on The Vette Site Billboard.
- The Vette Pros |
| Title: | 1993 Rear Axle Gear Ratio |
| Date: | 11/17/1999 |
| Question: |
I Have a 93 coupe-Auto trans- with the standard (2.59) rear axle gear ratio. Rear tires are also standard (2.85/40/17)
I would like to go to a lower gear-a 3.31 maybe-to increase acceleration
without a dramatic decrease in MPG. Is this possible without a huge expense,and how is the ASR affected-if any?
- Joe |
| Answer: |
We recommend using a 3:55 gear set. This will offer more acceleration but will offer less
MPG than the 3:31 gear set. We feel the 3:55 is a good balance for the street. The ASR will not be
affected by the gear change as long as you keep the original tires.
- The Vette Pros |
| Title: | 1993 Failed Emissions |
| Date: | 9/28/1999 |
| Question: |
I have a 93 LT1 6spd that won't pass the MD state inspection. It has
50.8k miles on it and as far as I know, everything is orrigional. It
failed the hydrocarbons protion of the test, with the allowable limit
being 1.20 (ppm?) and it generated 1.57. the car seems to run well
otherwise when warm, but during initial start-up after it has been
sitting it seems to run rich for a second or two nad sometimes when it
is warm, it takes a couple seconds to start. everything from cats to a
vacuum leak , PCV valve, EGR and O2 sensors has been suggested by the
chevy dealer but they want 65 dollars before they would even look at
it. I have no idea where to start, but could replace anything if I knew
what was faulty. Any ideas?
- TCP |
| Answer: |
Save yourself time and money and pay for the diagnostics. This is the
only way to find the root cause of the problem. You may get lucky and
fix your Vette by throwing parts at it, but it's been my experience that
this usually ends up costing a lot more! After you know what the problem
is, you can decide if you can repair it.
- The Vette Pros |
| Title: | 1993 & 1994 Opti-spark Units |
| Date: | 9/22/1999 |
| Question: |
I'm replacing the opti-spark on a 93 lt-1 vette which shorted out due to
washing the engine. When ordering the replacement I found out that in 94 GM
redesigned it to vent the system to prevent moisture buildup. Can I use the
new design on the 93? I know the 94 distributor cap will work but will it
help to hookup a hose to the vent pipe without running it into a vacuum
source?
- Ray |
| Answer: |
Yes, the '94 opti-spark unit should work on the '93. We've never done
this but it should work. Yes, you should hook up the vacuum hose to a vacuum source to vent the
new opti-spark unit. This will keep the moisture out by moving air
through it. This is the whole reason it was redesigned in '94.
- The Vette Pros |
| Title: | 1993 LT1 Performance | |
| Date: | 9/20/1999 | |
| Question: |
Hello, I'm writting frome FRANCE. I bought a red Corvette : LT1 of 1993.
Do you know what could I do or order to make it more powerfull ? I heard about a chip, where can I find it, how much?
- Cédric | |
| Answer: |
The stock European chip should perform better the stock USA chip. You
may not get much of a gain by buying a new performance chip. Here are a
few of the endless options for modifying your Vette - port and polish
the heads, larger intake manifold, or a super charger.
- The Vette Pros |
| Title: | 1992 T-56 Transmission Upgrade |
| Date: | 2/13/2000 |
| Question: |
I am wanting to upgrade my 92 LT1 to a 6-speed to complement the LT4 heads
and other modifications. I would rather us a smooth and quiet T-56
transmission instead of the factory ZF. Has anyone seen or heard of a
conversion tail housing/adapter kit for this?
- Steve |
| Answer: |
We know of no adapter kit. You could try to find a later model ZF
transmission. GM improved the ZF transmission every year. The later the
model the smoother and quieter it is.
- The Vette Pros |
| Title: | 1992 Cracked Top |
| Date: | 12/17/1999 |
| Question: |
Hi, I have a 92 corvette with an acrylic plastic top. It has a crack on
the drivers side rear that goes in about an inch then makes a right turn and goes about
3 inches. Is there anything I could use to seal this crack up?
- Harry Bassette |
| Answer: |
Sorry, there is no effective way to fix this crack. You can buy an exchanged top
from Ed at Not Just Vettes for $695.00.
- The Vette Pros |
| Title: | 1992 Clicking Noise |
| Date: | 12/10/1999 |
| Question: |
I have a 1992 Convertible. Auto, LT1, has about 70K miles. I hear a loud clicking coming from what I believe is the drivers side rear
wheel area. With the brake depressed, by moving the shifter from reverse to drive and back I hear a load clunk with slack between
gears. I visually inspected the axle u joints and can not see anything apparent.
- harley-vettes-rule |
| Answer: |
Our guess is one of the U joints is bad or the front pinion bushing of the rear end
is bad. Get it checked by a pro.
- The Vette Pros |
| Title: | 1992 6 speed Convertible Production Numbers |
| Date: | 10/17/1999 |
| Question: |
I have just purchased a 1992 triple white 6 speed. I was wondering if you knew or where I could find how many of these cars were produced. I heard less than 200 and even less than that for
the 6 speeds. I have checked with G.M. and the Natl. Corvette Museum but info could be obtained. Any info you may have on this please let me know.
- LT1VETTE |
| Answer: |
It is difficult, almost impossible, to calculate the exact number of
vettes were produced for a specific color. There were 5,875
convertibles produced and 5,487 6 speeds in 1992. We feel that condition is more
improtant than production.
- The Vette Pros |
| Title: | 1992 Engine Breathing & Oil Consumption |
| Date: | 9/24/1999 |
| Question: |
I have a 92 LT1 that has been stroked to 383 cu in and it presently uses
about 1 qt per thousand which is more then the engine modifier deems
acceptable. I added a K&N vent filter in place of the oil filler cap
and two things happened: first, power is distinctly up, second, oil
consumption has been reduced but I do not know by how much yet.
Can you explain the effect the vent filter had/ has in this application
particularly the power increase? Is it just a matter that the closed
system could not vent enough crankcase pressure due to the small air
intake via the closed system and allowing oil blow by, or is it
something else?
|
| Answer: |
This is a tough problem! We can't explain the big power increase because of adding a filter in
place of the oil filler cap. That should not add a lot of power. We
agree that consuming 1 qt. of oil every 1000 miles is a bit much. Your
engine may be blowing oil past the rings or have a problem with the
valve guide seals. We suggest doing a leak down test for compression on
each cylinder to figure out what is going on.
- The Vette Pros |
| Title: | 1991 Sys Light |
| Date: | 12/10/1999 |
| Question: |
I have a 1991 coupe, and yesterday I was fixing the power mirror and then the next time
I drove it the sys light keeps coming up, what does it mean? Can I drive it safely or
should I leave it until checked?
- Alan |
| Answer: |
We think the sys light coming on after fixing the mirror was a coincidence.
Get your Vette's computer codes checked to be safe.
- The Vette Pros |
| Title: | 1991 Bucking Intermittently |
| Date: | 10/24/1999 |
| Question: |
I have a 1991 L98 roadster 6speed with 17k miles. lately the car starts
bucking intermittently and the service engine soon warning comes on.
If I shut the car off for a couple of minutes, the car starts up ok. The bucking
may start up again, or sometimes I can drive the rest of the day without a problem.
- Henry |
| Answer: |
This can be any one of the endless sensors or switches. Start by
checking the computer for codes and go from there.
- The Vette Pros |
| Title: | 1991 Production Numbers and Value |
| Date: | 10/21/1999 |
| Question: |
I am interested in finding out how many corvettes where built in 1991. If
possible separate hardtops from convertables. My wife owns a 1991 white corvette with about 8000 miles,trying to
determine a value. What do you think?
- Roger |
| Answer: |
There were a total of 14,967 Vettes built in 1991. 5,672 of those were
convertibles. The November 1999 issue of Corvette Fever listed one 1991 Vette coupe
that was sold at the Bloomington auction for $13,500. The condition of
your Vette will play a big part of how much it is worth. Check the
Vettes For Sale page of the Vette Site and see what other 1991 Vettes
are selling for.
- The Vette Pros |
| Title: | 1991 Overdrive | |
| Date: | 9/18/1999 | |
| Question: |
I have a 1991 automatic convertible, L98 motor. I like the car, but I feel
when driving in overdrive at speeds under 50mph, the car feels like it lugs,
or doesn't downshift quick enough if I am just rolling on the power to
accelerate. I need to really hit the gas to get it to downshift. Usually,
I run in Drive under 50mph. It feels like the car stays in its powerband.
Is this simply the way it is because of the effect of the overdrive and low
gearing? What can be done to improve performance in overdrive?
- Bob | |
| Answer: |
The sensation you are describing is because of the master computer. The stock
chip in the computer tells the overdrive to kick in at 32 mph. The only
way to change this and improve performance is to buy a performance chip
that instructs the overdrive to engage at 38 mph. There are many
vendors of these chips.
- The Vette Pros |
| Title: | 1990 Vibration (rattle) In The Transmission |
| Date: | 11/29/1999 |
| Question: |
I have a 1990 corvette 6 speed transmission. In 5th and 6th gear at lower rpm there is a
vibration ( rattle) sound that comes from the transmission. Can this problem be resolved
and who can do this type of work.
- Don |
| Answer: |
There is a design problem with the bevel on the transmission gears that
causes this vibration. Our advice is to live with the vibration because
it should not cause any harm to the transmission and is VERY expensive
to fix. The only way to fix it is to replace it with a new ZF
transmission because the parts are almost impossible to get and very few people
understand how to re-build the original transmission.
- The Vette Pros |
| Title: | 1990 Infl Rest Light |
| Date: | 10/12/1999 |
| Question: |
I have a 90 corvette conv with 42,000 miles and suddenly the infl rest
light came on and stays on ! I was given advice by someone ( who did know what he was doing )
to unhook battery and see if that fixed it. Nothing doing, it still comes on BUT now my
radio is locked ! I guess I didn't realize that when I bought the car I should have asked the
previous owner the code and changed it to one i knew !
Now, not having a mechanical background, should I take the car to the dealer with the INFL REST
light RIGHT away ! ( I have looked at fuses and they seem ok ).. is
their something else I should do, or just bite the bullet and pay the dealership ?? any idea about
the radio, getting it unlocked ?
- Bill |
| Answer: |
Get the air bag system checked. Sometimes a GM dealer can reset the
radio but most of time the radio has to be sent out to be reset.
- The Vette Pros |
| Title: | 1989 Radio Noise and Climate Control Display Problems |
| Date: | 1/29/2000 |
| Question: |
My 1989 vette makes a humming noise out of the 2 rear Bose speakers when
I turn on the radio. Also, the temperature display for the climate
controls sometimes starts making random digits and will often just shut
off. What steps should I take to fix the problems.
- Lee Robertson |
| Answer: |
A humming noise from the rear speakers is one of three things. A bad radio,
a bad amplifier, or bad speakers. We think it's the amplifier. We think a bad
climate control unit is causing the display problems.
- The Vette Pros |
| Title: | 1989 Coolant Sensor |
| Date: | 1/6/2000 |
| Question: |
I flushed my 89 cooling system and since then, the Coolant sensor comes on at
around the time the thermostat opens. This did happen once or twice before
the system flush but not as regular. I re-filled the system with the heater
on , the system is full, What I did notice is that the expansion system (
pressure) is not working, Nothing is going back and fourth to the main
system from the expansion tank. I have checked for leaks, no leaks , no
fluid on the floor etc.. I have removed the expansion tank, checked the fluid
line, the radiator hoses etc..I have replaced the Hi Pressure cap and am
considering the sensor but it's just a guess. The sensor does go off after
a while and might come back on, the water temp does not run away, it is very
stable, with the 160 thermostat. The car has 50k on it, and I am not certain
that the expansion system worked when I bought the car back in late 98.
- Tony in NC |
| Answer: |
You probably have air in your cooling system from when you replaced the fluid. This will
trip the coolant sensor because the coolant level will not be correct. We think the 160
degree thermostat is to cool. It is not letting the engine temperature get warm enough to
let the expansion system work correctly. Replace it with a 180 degree thermostat and get a
manual that explains how to bleed the cooling system.
- The Vette Pros |
| Title: | 1989 With No Heat |
| Date: | 10/21/1999 |
| Question: |
I have a 1989 Vette with electronic heater/ac controls. I am unable to get heat from the heater. The sensor seems to be working properly as with the highest temperature displayed on
the unit the fan will come on, in the auto and manual mode, yet only cold air emanates from the heater. The defroster functions similarly, with only cold hair. The cooling aspects of the AC
seems to work fine. I have tried selecting a high temperature and running the AC, i hopes of getting heat that way, but to no avail. The temperature gauge indicates normal operating
temperatures.
- G. A. Godbout |
| Answer: |
It sounds like the heater control unit on the center console. We would
start there.
- The Vette Pros |
| Title: | 1989 Positraction? |
| Date: | 10/12/1999 |
| Question: |
I just bought an 89 coupe , 29000 miles, runs well, did all vetts come with positraction, it has 6 spd, adj
suspension. I put in Mobil 1 10-30 , is Mobile 1 trans and diff oil worthwile ?
- Skip |
| Answer: |
Yes, most C4's came with positraction. Mobil 1 is a good product.
- The Vette Pros |
| Title: | 1989 Service Engine Soon Light |
| Date: | 9/25/1999 |
| Question: |
I have a problem with my pristine 89 Vette, which has 85,000 miles on it. The service engine soon light came on. So I put new
plugs , cap and rotor. No more light. Three days later it's back on. I also put a new K&N air filter on it. I am unable to come up
with solution to this problem. Any help I can get will be appreciated.
- Larry |
| Answer: |
When this light comes on it can be a number of things. You need a
diagnostic computer to get the code that is stored in your Vette's
computer. This code will help narrow down the part that is failing.
Save yourself some time and money and get it diagnosed. Most repair
shops will have a diagnostic fee and the will tell you what it wrong and
then you can decide if you can handle the repairs yourself.
- The Vette Pros |
| Title: | 1988 Vibrations |
| Date: | 1/9/2000 |
| Question: |
My '88 Vette 4+3 has a vibration I know not from where. It occurs at
about 1100 RPM, 1700 RPM and 2700 RPM. It is more pronounced when under
load, however is apparent when in neutral or with the clutch depressed.
I'm not sure if it's coming from the engine, the clutch/transmission or
from the exhaust system, cover plate etc.
- Santiago Tafoya |
| Answer: |
We think it is a problem with an engine component because it still happens when you
disengage the transmission. Check the harmonic balancer, the clutch, or the flywheel.
- The Vette Pros |
| Title: | 1988 Battery Drain |
| Date: | 12/14/1999 |
| Question: |
I have a 1988 350 engine automatic. The battery power is constantly
drained. I've replaced the battery two times in the past 6 months. I
still have trouble starting the car at times when the battery drains. I have the
factory Delco Bose stereo system in the car. I've been told that the
stereo / clock light is not supposed to stay on when I shut the engine. However,
the light stays on 24 hours a day. Is this supposed to stay on or off? Can
this be the cause of the battery drainage? The alternator checked out OK.
- Brian |
| Answer: |
We think the stereo/clock light is supposed to go off when the ignition
is turned off. Have you tried turning the stereo off with the ignition
off? I know it's a weird question, but someone may have re-wired the
stereo to power on without having to turn the ignition switch on. The
stereo/clock could be the cause of the draw on your battery. With a
volt meter, check the draw on the battery. It should be between 30 - 40
mili amps. If it is greater than 40 you need to find the source of the draw.
- The Vette Pros |
| Title: | 1988 Falling Head Light |
| Date: | 12/3/1999 |
| Question: |
Thank you very much for responding to my letter. the other day i was driving
it and it quit again. i had my fuel pressure gauge with and a new fuel pump
relay. i hooked up the gauge and tried to start the car . NO FUEL PRESSURE.
i put the new relay on and tried again. still no fuel pressure. so i took
the gauge off and waited 20 minutes and the car restarted. i got a new ac
delco pump where i work and put it in. buy the way, what an easy job that
was. no pun intended. i took the car out for a spin. man was i shocked at the
difference. second gear hit so hard it threw the car side ways. i havn't had
a problem since. your diagnosis was right on. thank you very much. now i have
the falling head light syndrom. sometimes they stay up and sometimes they
dont. when you turn them on they'll just fall downward and stay there. once
you work the lights a couple times the'll stay up. thanks again and keep up
the excellent work.
- Doug |
| Answer: |
Thanks! We take donations. Hey, we also need to keep our Vettes in perfect condition!
It sounds like a worn gear, gear bushings, or a bad headlight motor.
- The Vette Pros |
| Title: | 1988 Vette Just Dies |
| Date: | 11/12/1999 |
| Question: |
I have an 88, 35th anniv. corvette. automatic., the other day the wife was
driving it to work and as she was comming up to a red light about 2-3 miles
down the road from where we live the car just died, it restarted right
away. so she turned around to bring the car home a block down the road it
died again as she was comming to a stop sign. that evening i put a fuel
filter on it and checked the tps sensor. it was reading .200 i adjusted it to
.54 exactly where the factory specs say. i drove the car the next day. i
stopped at a store to get gas at the same intersection where the car died on
the wife. i put gas in it which wasnt that low. i started the car and about
15 seconds of idling there it died and would restart i didnt have any tools
with me or time to check anything. so i left it there. the wife came back an
hour later and the car started and ran fine the whole way home. i put a fuel
pressure gauge on it in the drive way and left it idle it died once and when
it did the fuel pressure dropped with it. then it started right back up and
hasnt acted up since. i checked the control modle it was ok. this got me
baffled. relay maybe ? ive been whating for it to do it again but i dont want
to be somewhere. any ideas ?
- Doug |
| Answer: |
We don't know the exact cause of this problem, there are too many variables. We think it
could be the fuel pump, the fuel pump relay, or a bad ECM (main computer). We recommend
taking your Vette to a professional for this problem.
- The Vette Pros |
| Title: | 1987 Blown Head Gasket |
| Date: | 1/30/2000 |
| Question: |
I am buying an 87 with blown head gasket. The car has 110,000 miles on
it. Should I just do a complete rebuild of the engine? Do the stock
aluminum heads hold up to overheating. I haven't purchased the car yet
and am wondering if the heads are likely to be re-usable or not.
Any suggestions on brand and parts if I do a rebuild. (cam, valve train
etc.) I want it to be a little faster than stock but must maintain
California emissions.
- Dean Simpson |
| Answer: |
You may not have to do a complete rebuild because of a blown head gasket. Pull the
heads and see what the engine looks like, then you will know what has to be done.
The aluminum heads can be reused unless they were really cooked. Get them checked
by a professional engine machine shop. The heads may need to be decked if they are
warped. There are so many after market parts to choose from. Check with Edelbrock,
Comp Cams, Crane Cams, or Isky Racing Cams. Give them a call. They have good tech
lines which can steer you in the right direction.
- The Vette Pros |
| Title: | 1987 Throttle Body Cleaning |
| Date: | 9/28/1999 |
| Question: |
I've read on another site that removing the throttle body and emerging it in
a cleaning solvent (Autozone sells a "B9" product) is a good idea. I cleaned
the TB already by removing the air duct and MAF and squirting throttle body
cleaner into it. I held the butterflies open and used a clean rag to wipe out
as much carbon as I could. Would it be more beneficial to actually remove the
TB from the plenum and clean it? Judging from the large amount of carbon I
cleaned out my way, I'm guessing it's never been cleaned before.
When I clean the TB and if I do remove it, should I replace the IAC
or just clean the carbon off of it and replace it? I thought maybe this is
one of those "might as well" situations if I do go to the trouble of removing
the TB might as well replace the IAC. I am not getting any codes telling me
there is a problem with the IAC this would be done as a preventative
maintenance step. I have heard that you have to set the minimum air for the idle if you
remove or replace the IAC? Is this true or if I just replace the IAC will the
ECM (or something) set the minimum air automatically? I believe this has to
do with the idle RPMs.
- Bob |
| Answer: |
Get a can of "Top Engine Cleaner" from a GM parts supplier (part no.
1052626). This stuff is great and is meant for cleaning the top part of
your engine. Read the directions on the can and follow them exactly!
There is no need to remove any parts (TB or the IAC).
- The Vette Pros |
| Title: | 1987 Engine Temperature |
| Date: | 9/26/1999 |
| Question: |
I have a 1987 corvette with 86000 on the clock, car is in fantastic shape
except for suddenly the temp. guage is acting up, what I mean is that the car
normally runs between 185-195 degrees, and if I get stuck in traffic or just
at idle for any long periods of time the temp. shoots to the 240+ range, once
I can open it up it does go down, I have checked for road debris (plastic
bags,etc.)that might of got stuck on the radiator but nothing's there.
- Carl |
| Answer: |
Make sure your electric fan is coming on when the engine temperature
reaches 238 degrees. If it is not it could be the fan or the
temperature sensor. Normal operating temperature on a hot day is
between 238 and 240 degrees. If the temperature exceeds 241 degrees,
get the car checked out by a professional.
- The Vette Pros |
| Title: | 1986 Cross Threaded Fuel Line Nut |
| Date: | 1/30/2000 |
| Question: |
I have a 86 coupe with 35,000 miles on it, I've owned it for 6 years, I tried to replace
the fuel filter last summer. Got the old one off, Tried to put the new one on and the threads
from the nut coming from the rear of the car felt like it was cross threading going in to the
back of the filter, so I backed it out and tried to put the old filter back on to see If was
any better, I ended up putting the old filter on, it went very hard and the fuel line nut is
cross threaded, Its never leaked as I've putt a couple thousand miles on it since. I know the
filter needs to be changed, I try to do all my own maintenance my self but I'll pay whatever
it takes to get this fixed. I was hoping you've herd of this happening before and have a
little trick for this stripped nut.
- Steve |
| Answer: |
Sorry, there is no trick. You will have to cut the fuel line to get the cross threaded
nut off. You can put a new nut on and flare the end if the fuel line is long enough.
Otherwise, you will have to install a new fuel line if the fuel line is not long enough.
- The Vette Pros |
| Title: | 1986 Hard Top |
| Date: | 11/4/1999 |
| Question: |
My car is a 1986 Convertible. Is there anyplace that I can buy a removable hard top for my car in addition to the soft top. It seems I have seen them in ads somewhere. I would
like something that would use the existing soft top holes and clamps.
- Neil |
| Answer: |
Hard tops are available from Ed at Not Just Vettes or you could try Hemmings.
The price range is $12.00 to $1400.00. We don't recommend the after market hard tops.
- The Vette Pros |
| Title: | 1986 Heads |
| Date: | 10/13/1999 |
| Question: |
I have a 1986 vette coupe with tuned port L98 with steel heads. I'm thinking about changing the heads to aluminum
heads, but I want to keep the stock compression ratio of 9.5 to 1. What cc are the stock heads? What aluminum heads do you recommend?
- Mark |
| Answer: |
We think the stock steel heads are around 70 CC's. We recommend the GM
aluminum heads. They are well priced and they work.
- The Vette Pros |
| Title: | 1986 Transmission Parts |
| Date: | 10/7/1999 |
| Question: |
We are in the process of rebuilding a 1986 coupe with a 4+3 tranny. I know that
the vette catalogs offer a kit, but I also understand that the kit is the basics
for the overdrive part of the transmission only. There is reported to be a
company in Florida somewhere named Autodyne(?) that bought the Doug Nash parts,
rights, etc. to this transmission. Do you know how to contact them or do you
know where to get other parts such as synchos, gears, etc. for the front end as
well as parts for the overdrive?
- Gary |
| Answer: |
Most transmission parts suppliers should sell parts for the stock T-10
transmission. Fixing the overdrive is a very complex task and we
recommend taking it to a shop that specializes in fixing Vette
transmissions.
- The Vette Pros |
| Title: | 1986 L98 Rough Idle |
| Date: | 10/6/1999 |
| Question: |
I have a 86 Convertible with 101K miles on it. I have replaced the intake manifold gasket and
all of the plenum, TB, etc gaskets. Cleaned the TB, replaced the air filter with K&N. New
plugs, Taylor plug wires, rotor, & 24# SVO fuel injectors(all 8). Set minimum idle air, TPS,
and timing. The car still idles rough, jumps between 600 & 800 RPM when I'm stopped at a
light. Does this sound like a vacuum leak? If so, what is the best way to find it?? What
else might it be? "Service Engine" light IS NOT flashing.
- Tom |
| Answer: |
The rough idle may be a vacuum leak. Here are a few ways to find a vacuum leak:
You can use a 24" piece of fuel line or garden hose as
a cheap stethoscope to locate vacuum leaks. With the motor
running, place one end of the hose by your ear and move the other around the engine
until you hear a hissing sound (be careful of the engine fan!). Or, try crimping off
each hose one at a time and see if you can find the one that is causing
the problem. Finally, take it to a shop that has a smoke machine that is
designed to find vacuum leaks. The smoke machines will find any leak.
It could also be a sticky throttle plate, the IAC may be jammed,
timing setting, the O2 sensor, a bad or incorrect fuel injector, or too
much fuel pressure.
- The Vette Pros |
| Title: | 1986 Backfiring and Sputtering |
| Date: | 9/29/1999 |
| Question: |
My 1986 started cutting out, and backfiring. Couldn't get it up to even
fourty mph. Just barely runs and then cuts out. I had a VW once that was
doing something similar and it turned out to be the fuel filter. Do you
guys have a manual that points out where the fuel filter would be on the
Vette?
- Martha |
| Answer: |
You could have a simple problem with a restricted filter or a major
problem with the fuel system. If changing the filter doesn't solve it
bring it to a professional. The fuel filter is located under the car,
just in front of the passenger side door. Be very careful when removing
the filter. Make sure the exhaust and engine is cold, disconnect the
battery, loosen the nuts SLOWLY to relieve the pressure so the fuel
does not spray all over, and have something ready to catch the dripping
fuel.
- The Vette Pros |
| Title: | 1986 Remanufactured Crankshaft |
| Date: | 10/21/1999 |
| Question: |
I am looking for a remanufactured crank(turned .010) for an
86(L98). It would be nice to get all the bearings also, but at this
point I'll take what I can get. Thanks for your suggestions.
- Brain |
| Answer: |
Check engine performance shops or a crank grinder. They should have a
remanufactured 0.10/0.10 in stock.
- The Vette Pros |
| Title: | 1985 Hard To Steer And Long Idle |
| Date: | 12/6/1999 |
| Question: |
I have a 85 vette 350 engine and the steering feels a little hard when
turning. Should it be easy & smooth while turning. I owned the car for
2years, but I don`t know if the steering should feel like that. Also one
more question when I start the car hot or cold the idle takes about 30
to 45 seconds to adjust. Is that normal?
- Victor |
| Answer: |
It sounds like a worn out steering rack. Over time the aluminum parts
on the inside wear out. Also, the seals on the pistons wear out and cause
pressure loss. Check the fluid and if it has a metallic color you need
to buy a new or re-built steering rack. Make sure whoever replaces the
rack also flushes the pump of all the contaminated fluid. If this is
not done it will void the warranty of the new steering rack. The time
to idle seems a little high. You may want to get it checked.
- The Vette Pros |
| Title: | 1985 Seat Convertion |
| Date: | 11/12/1999 |
| Question: |
I have an 85 vette with sport seats. I want to buy new seat foam and
covers but I want to change to the standard seats. Will standard seats fit in
my sport seat frames or do I need to get new frames also?
- JLBJR31 |
| Answer: |
Yes, the sport seats can be changed to the standard seats. Here are the prices from
Ed at Not Just Vettes: Standard leather
covers mounted on new foam are $995.00 and used seat frames are $250.00.
- The Vette Pros |
| Title: | 1985 Weather Stripping |
| Date: | 10/14/1999 |
| Question: |
I own a 1985 vette most of the weather stripping on the car needs to be replaced.I wanted to know if there is
anything special I should know ,or do before I start this project? Also most of the weather stripping is
rather expensive. Do you have any suggestion on how I might save a few bucks???
- Wayne |
| Answer: |
This is a tough and messy job. Do not cut corners on to save a few
bucks when doing weather stripping. Buy GM stripping and spend time doing
the job right otherwise, pay someone who knows what they are doing.
Not Just Vettes, http://www.partsforvettes.com/,
sells GM weather stripping kits.
- The Vette Pros |
| Title: | 1985 Oil Pressure Gauge |
| Date: | 10/7/1999 |
| Question: |
I recently purchased an 85 vette w/ 350 cu in., automatic. lately, the oil
pressure gauge is dropping gradually to 0 from 40 when stopped and in gear
but goes back up if I put the car in neutral. Also, the gauges and
speedometer work on the digital dash, but the lighting/luminescence for them
goes in and out at various times, sometimes banging on the dash gets it to
come back on. Any tips?
- Nate |
| Answer: |
First, check the oil pressure with an external gauge to see if the engine
is really loosing oil pressure. If the engine is ok, it may be a bad ground
somewhere in the dash. Pull the dash unit and get it checked.
- The Vette Pros |
| Title: | 1985 Speedometer Reading |
| Date: | 10/1/1999 |
| Question: |
Cannot get speedometer to register mph (newest switch locked up during test
drive) and therefore overdrive unit will not engage. What else could cause
speedometer problems when switch and gear have been replaced and head unit
is seemingly functioning correctly?
- Claire |
| Answer: |
Check the signal from the transmission. If it's good, pull the dash and
get the head unit checked.
- The Vette Pros |
| Title: | 1985 Auxiliary Fan and Alternator |
| Date: | 9/17/1999 |
| Question: |
I own a '85 vette that last night the aux fan would not shut off. The
Alternator showed no charge. I disconnected the aux fan relay to turn the
fan off, still no charge. Turned car off and on an connected the relay
several time but nothing changed. Later I started the vette to put away and
the alternator was charging, didn't check fan though.
- Max |
| Answer: | Electric problems such as these can be difficult to diagnose. We think
there may be two separate problems going on with your '85. The
auxiliary fan not shutting off could be any one of the following: The
ECM (main computer) may think that the engine is over heating thus
triggering the fan to stay on, the switch on the A/C compressor (turns
the auxiliary fan on when the A/C is on) may be bad, the auxiliary fan
relay could be bad, or there could be a loose ground to any one of these
switches. The alternator sounds bad if it is intermittently charging.
Take it to a local parts store (Track Auto) and have them test it.
- The Vette Pros |
| Title: | 1984 Transmission Overdrive |
| Date: | 12/29/1999 |
| Question: |
The overdrive on my '84 Corvette has started to not kick in until I reach 65 mph.
(Or 2800 RPM) I have attempted to adjust the TV cable and the results are; If I do it
according to an after market tech manual the car shifts smoother through gears 1 through 3...
but the overdrive will not kick in at all. If I manually adjust the slider the car revs to
2800 (or so) before it shifts in gears 2 - 3. It then reverts to the overdrive engagement
problem that it initially had (engaging at 2800).
Is this a linkage problem?? Is this some type of governor problem??? Or, is it time for a
rebuilt transmission?
- twmyers |
| Answer: |
The overdrive should engage around 1400 rpm. Check the transmission fluid, if it is not cherry
red you should change it. If this doesn't help it may be time for a rebuild. You may want
to consider a overdrive unit from a 86-89 Vette.
- The Vette Pros |
| Title: | 1984 Instrument Panel Problems |
| Date: | 11/14/1999 |
| Question: |
I recently purchased an 1984 corvette. I am having a problem with the
instrument panel. The panel shuts off and the two blinkers and high beam
lights come on and stay on. They don't blink or anything. The lights just
stay on. You can see the speedometer and other gages in the daytime. But
they are real dim. At night you cant see any gauges. After the vehicle has
been turned off and sits for a while sometimes the panel will light back up.
- Misst2102 |
| Answer: |
The dash boards in the 1984 - 1987 Vettes have had many problems.
It could be a bad ground somewhere in the electrical system or a bad dash unit.
We would pull the dash board and check that first.
- The Vette Pros |
| Title: | 1984 Brake Pulling to One Side |
| Date: | 10//1999 |
| Question: |
I have a 1984 corvette I am restoring. I am having very odd brake problems.
It pulls very hard to one side then to the other under hard braking. When I
pull up to a stop and just tap them easing forward some times it pulls very
hard (spinning the wheel to either the left or right).
I have rebuilt the brake calipers on all fours. They were replaced with Raybestos parts and greased with MolyB grease. the callipers inside where clean and just slightly honed to clean them up. There were no signs of pitting on the pistons. the piston slides in easily with very firm hand pressure.there is no obvious damage to braces or such. I have turned all the rotors at the same time. I also have put about a gallon of fluid through the system hoping to avoid any contamination or bubbles. After this I still had problems and consulting the manual I tried replacing the master cylinder with an A/C Delco replacement. no change. I don't have any leaks and use no fluid and no contamination (replaced the pads twice) and only starting to show a little sign of glazing.. the supension seems to be tight with no apparent defects. The rack has been replaced before the brake problems (it got stiff to the left) and the car put to 1986 alignment specs adding the 3 degrees caster I witnessed the alignment at a trusted shop and did the rest of the work myself. the entire front supension has been replaced with a PST suspension. and other than a slightly off center drill on one of the upper control arm ball joint rivet/bolts it went as expected for an '84 rebuild. Help please!! I am at my wits end. get as technical as you need too..
|
| Answer: |
It might be a bad brake line/hose or a bad caliper. It's hard to say without seeing the car.
You may have to take it to shop and have the entire brake system
checked. Try a product called Sill Glide over MolyB grease, it
works better.
- The Vette Pros |
| Title: | 1984 Crossfire Conversion |
| Date: | 9/26/1999 |
| Question: |
Hi, I have got a quick question about an 84 Vette that I hope that you can help me with. As you know my Vette has the problematic crossfire set-up, this one seems to
be OK at this time, but has over 130K miles on it. I am planning on installing a high performance small block which is caburated. I am planning on using the stock
distributor, exhaust manifolds and accessories. This engine will have a mild cam and I am concerned about the computer shifted transmission. Will the trans still
function properly? Is there any way to regulate the fuel flow down to meet the carb demands with burning something up? Is there anyway that the crossfire set-up could
handle a 10.5-1 350? Will the distributor still work OK without the others sensors? Well I am sorry, it seems that my quick question has turned into several. I hope
that you can help.
- Art |
| Answer: |
We have never tried to convert a 1984 crossfire Vette to a carbureted
small block. This will be difficult and we will try to answer your
questions. The main computer controls the transmission in the crossfire
setup so it will have to be disconnected. This will render your
transmission useless. You will have to find some way to control the
transmission. You may be able to use a transmission cable from an '81
Vette and figure out a way to connect it. Use a in line fuel pressure
regulator to control the fuel flow to the carburetor. Yes, the
crossfire setup can handle a 10.5 to 1 ratio. We know of another Vette
that is 11.25 to 1 and is running fine.
You will need a new distributor because the old one needs the sensors.
We recommend getting the crossfire's throttle bodies balances and
installing it in the new engine. It will make the engine swap much
easier and should work fine.
|
| Title: | 1984 Top Removal |
| Date: | 9/26/1999 |
| Question: |
I bought a 1984 corvette and I can not figure out how to take the top off.
Can you please help me? The top is not glass, I thank it is fiberglass.
- Miss T |
| Answer: |
There are four Torx head bolts. There are two by the windshield, hidden
up in the holes behind the sun visor and the other two are toward the
rear. The bolts by the windshield do not come out, just loosen them.
The bolts toward the rear come out. Your Vette should have come with a
tool for removing these bolts. I would look in the glove box or check
with the person you bought it from. If that doesn't work, GM sells the
wrench for around $70.00 or you can buy the correct #40 Torx head bit
from any tools supplier. Note: make sure your Vette is on level ground
when putting the top back on, this will make it line up correctly.
- The Vette Pros |
| Title: | 1984 C4 Top |
| Date: | 9/23/1999 |
| Question: |
I HAVE ONLY ONE QUESTION ABOUT MY 1984 CORVETTE. I AM IN NEED OF A HARD TOP
AND WOULD LIKE TO KNOW WHAT YEARS WILL FIT IT. IS IT 84-96?
- Gregory |
| Answer: |
Yes, 84-96 should be interchangeable.
- The Vette Pros |
| Title: | 1984 Cross Fire Injection |
| Date: | 9/18/1999 |
| Question: |
I recently bought a 1984 corvette with the 350 cross fire injection. I have two questions.
The first is that the fuel injectors seem to be making a loud ticking noise, is this normal?
The other is what is, cross fire injection, and how does it work?
- Steve |
| Answer: |
Yes the ticking noise is normal. Cross fire injection was introduced by
Chevy in 1982 and ended in 1984. It has to do with which fuel injectors
provide fuel to what cylinders. The right set of injectors fire the
left (drivers side) bank of cylinders and vice versa. A unique design
that generated good low end performance but lacked a little top end performance.
- The Vette Pros |
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