User Tech Tips
If your brakes are squeaking and driving you crazy, here is what finally worked for me. After trying 3 different brands of pads and each set being quiet for 3 days only to start squeaking again, I removed the pads and applied blue Permatex to the backs of all the pads. Let the Permatex \"set up\" on the pad for 1/2 hour or so and install the pads. Wait at least 2 to 3 hours
1984 to 1996 C-4 Door Handle Re-New / Reconditioning After years of use in the harsh Canadian climate, (summer, winter, fall, spring) my C-4 door handles have fallen victim to finish cracks, stone chips and fading. The finish chips and cracks revealed the grayish colored aluminum underneath. It looked really bad! I considered replacing the handles but decided not too because of the expense and amount of time involved. My biggest fear however, was the
Another tip from a Gordon Killebrew lecture during Corvettes at Carlisle 2001. Say your L98 starts right up after sitting for a long while, such as overnight, but is hard to start after sitting for a little while. Before trying to start it, hold the accelerator to the floor for a brief period and release it. If the engine then starts right up it\'s a sign that an injector may be leaking, causing a flooding
A very common problem with the C4 sport seat is the failure of the pump that inflates the lumbar bladders internal to the back of the seat. The most prevalent failure is not the pump assembly, but simply the diaphragm within the pump sub-assembly. To gain access to the pump, look under the front of the seat and there will be a wire clip that holds the bottom seat cushion in place. Push this clip
I ordered my seals form Eckler�s. Fit was perfect and included six replacement pop rivets but no instructions. I use a combination of previous posts and a little common sense to get the job done. The procedure was done on my 91. Adjustments should be made for other years. Took about 30 min per door (this does not include smoke and refreshment breaks). Put both windows down and disconnect the battery. I removed the door
For 90-96 owners these are the codes you can read from your AC control panel. To access these codes do the folowing procedure. 1. Press both fan(up and down)buttons together and hold them for roughly 5 seconds. This will display a 00 on the A/C control panel LCD. 2. Use the fan up and down buttons to select the desired code you wish to read. 3. After selecting the code press button inbetween the fan
I have an automatic, 93 LT-1 that I autocross. The course that I was running was low speed and I could run in \"L\" range and stay off the rev-limiter. While staging in my next to last run, I found that the automatic transmission was not shifting until 3500 rpm, unless I would take my foot off the gas pedal, which caused it to shift. After the event the transmission continued to do the same,
Hello This is a simple one that stumped me for about 1 year! I installed Full Length Headers on my 1991 Corvette (L98) the Headers are Headman Headers and they are not Jet coated or powder coated. Well after 1 weeks time my car would not start when it got hot? MMMMM Headers so i went and bought a shield thinking it would work? Nope still nothing same problem? So to make a long story
In front of the water pump pulley on 1988 and later L98s resides a rather large 10lb steel disk, lovingly refered to as the "frisbee". There has been much debate on the Forum about it's purpose and the benefits/risks of removing it. During a Q & A session at Corvettes at Carlisle 2001, I posed the question to Gordon Kellebrew as to the purpose of the "frisbee". His resonse was that this disk was added
How to Adjust your Early C4 TPS and Idle Speed by Lars Grimsrud SVE Automotive Restoration Musclecar, Collector & Exotic Auto Repair & Restoration Broomfield, CO Rev. New 6-15-00 This tech paper will discuss the procedure for correct adjustment of the Minimum Idle Speed and for adjustment of the Throttle Position Switch (TPS) on the early C4 Corvette TPI systems. These steps apply specifically to the 1985 model year, and in general to other years.
I made an adapter that allows the cooling system to be flushed using your garden hose. Here is what I did: drain the cooling system by taking out both knock sensors. Take one of the knock sensors to Lowes or Home Depot and buy two brass nipples, one end with the same pipe thread as the knock sensor and the other end with a barb end. Pickup some hose that fits over the barb end
... Here are the sure fail tests for the fuel system to save you time and money.. Take a fuel pressure gauge attach it to the schraeder valve.. turn the key on and off a few time to build up the pressure in the system... If you are having starting trouble the pressure will probably drop as soon as it hits 38 or 40 and the pump turns off it will probably leak back to
Following the tech tip from Jeff Loftis, I found these two circumstances to be true for my 1988. I don\'t know if this will apply to other model years. 1) One of the two torx bolts holding the headlight motor to the frame is blocked by another part of the headlight bracket assembly. Theres is another bolt that is a real pain to get to, but it must be loosened to allow the bracket assembly
1) First, relocate the the intake air temperature sensor to the air clearer duct. The heat load where it is located on a stock C4 gives the ECM (Electronic Control Module) a false reading and the ECM responds by cutting back on the fuel/air mixture to a leaner value than is actually required. Mid-America sells a kit for this project for around $45 dollars for 85- through 91 models (L98 in other words) which includes
During a Q & A session at Corvettes at Carlisle 2001 Gordon Killebrew mentioned one cause of fuel pump problems. Under the plate that secures the fuel pump assembly to the top of the gas tank is a small black connector. With time the pins and socket of this connector can become oxidized to such an extent that power to the fuel pump is interrupted. This condition can appear as an intermittent or a complete
How to Replace your Waterpump & Timing Chain by Lars Grimsrud SVE Automotive Restoration Musclecar, Collector & Exotic Auto Repair & Restoration Broomfield, CO Rev. B 6-15-00 This tech paper will discuss the replacement of the waterpump and the timing chain & gears on a 1985 L98 ("regular" Chevy 350) C4 Corvette. Other years are very similar in procedure, and utilize the same overall technique. The procedure outlined here differs slightly from the Service Manual,
If you\'re faced with replacing the broken fuse box cover knob on 1984-95 Corvettes, don\'t get discouraged...we\'ve ALL been there. The knobs are failure-prone since they\'re made of plastic and actually weaken with every twist, (ironic, since this is how you lock the cover in the first place.) Hopefully, this little tech tip will help. If your nut is okay, skip steps 1-3. If you must replace the nut also (like if your is damaged
After battling with 3 different cat back systems, and 3 different front Y pipes on my mostly stock 1990 corvette coupe, I have learned that the C4 corvettes can and often do have a exhaust resonance (droan) problem. After researching the matter and doing a lot of switching, installing, and reinstalling system after system I have some tips that I would like to share. All tips here are solely trial and error and have been
This modification was performed on an 87 Vette with approx. 100K on the odometer, a gutted MAF, a K & N air filter, Jacobs 8.5mm plugs wires and Delco sparks that are 2 heat ranges hotter than stock. I tried this modification and my fuel pressure went from 30# to 40# with only this fifteen second mod. The modification is that I removed the vacuum line from the factory fuel pressure regulator. Also, I
so how many of you have wives (or husbands) that are tired of getting called out to the garage to pump the brake pedal while you bleed the calipers? don\'t do enough brake work to warrant buying a vacuum or pressure brake bleeder? here\'s a super easy and cheap way to do it all by your lonesome. go to your local hardware store and get yourself a piece of 3/4\" PVC piping. cut it to
This is from the 1994 GM Factory Serive Manual, Book 2: IDLE AIR CONTROL (IAC) VALVE Remove or Disconnect 1. Electrical connector from IAC valve. 2. IAC valve assembly attaching screws. 3. IAC valve assembly. NOTICE: On IAC valves that have been in service: Do not push or pull on the IAC valve pintle. The force required to move the pintle may damage the threads on the worm drive. Also, do not soak IAC valve
How to Remove and Clean your Radiator by Lars Grimsrud SVE Automotive Restoration Musclecar, Collector & Exotic Auto Repair & Restoration Broomfield, CO Rev. B 6-19-00 This tech paper will discuss the removal, exterior cleaning, and installation of the radiator on a 1985 L98 C4 Corvette. Other years are very similar in procedure, and utilize the same overall technique. Overview C4 Corvettes seem to have chronic overheating/run hot problems, especially after about 100,000 miles. The
Antenna Bypass Switch 1984-96 My car 1992 A4 Coupe Materials List 1- Toggle switch 2- Crimp connectors (for switch) 8 ft of 16 ga. wire 2- 16 ga. butt connectors (blue) Heat shrink tube I got all this stuff for less than 10 dollars Remove or Disconnect Battery Pass seat & base Console door Console trim plate (has lighter, indicator lamp, & hatch release connections) Lower trim panel-RH Console side trim panel-RH Switch Assembly Ok,
This subject comes up often in the Tech section so I decided to share my experience as a tech tip. The CS-130 alternator used in many L98 C4 Vettes is famous for its abily to selfdestruct unexpectedly. Many have dreamed about better alt. There is one: CS-144 used in ZR-1\'s (124Amp) and in the very last years of C4 LT-1 and LT-4 Vettes (140Amp). I replaced mine with the 124Amp model. My car is a
Someone posted this a while back in C4 tech. Corvette VATS Key Codes and Associated resistance Codes in OHMS Pellet Resistance Code Ohms 1 - 402 2 - 523 3 - 681 4 - 887 5 - 1130 6 - 1470 7 - 1870 8 - 2370 9 - 3010 10 - 3740 11 - 4570 12 - 6040 13 - 7500 14 - 9530 15 - 11800 VATS, these four letters can instill fear
I just completed replacing my steering wheel on a budget. I have a 85 with tilt and telescopic. I installed a grant wheel with the hub adapter for under $40.00, I used the hub adapter for up to 1989 Cadilac without telecopic wheel their part # 3196. Advance auto parts is nice enough to loan the puller at no charge. The horn wire can be attached to any of the three brass tabs that are
Enthusiasts that have installed long tube headers may find that their engines are running in opened loop because the O2 sensor is not heated to 600 degrees. This is especially true if the O2 bung is relocated to the collector. In the case of the Hooker 2149 header, the bung is located on the #7 tube out of the box. This makes the stock O2 sensor work properly, however, the sensor is only measuring the
How to Upgrade Your Driving Lights by Lars Grimsrud SVE Automotive Restoration Musclecar, Collector & Exotic Auto Repair & Restoration Broomfield, CO Rev B. 5-16-02 This tech paper will discuss how to upgrade your early C4 driving lights. Later C4�s already have this upgrade from the factory. Overview & Procedure Have you ever been a bit disappointed in the power of your C4 driving lights ("fog lamps")? Fact is, if you're running with the headlights
You will benefit from this tech tip if: 1. Your Bose system does a loud �POP� when you power it off, or � 2. Your Bose system continues to �BUZZ� even when you power it off, or� 3. Your Bose system �BUZZ� now becomes a loud and constant �HISS� even when the system is powered off AND the key is out of the ignition (causing your battery to drain & die). The cause is the
I recently installed a Dana 44 with 3.07 as a result of upgrading the motor to a 406. I know many people here do not trust the reliability of teh d36\'s and often upgrade. As a result, many questions on what is needed and how hard it is to covert over are asked. I hope to supply some instructions on how to do the job and give some comfort to those about to take on
Let me start off by saying that this is very frustrating to do the first time around. Don\'t worry, and don\'t lose your cool. I did this on my 1994 coupe. It took me around four hours because I didn\'t know what I was doing and the other set of instructions didn\'t detail how to disconnect the wires, and I also discovered a small screw in my back tire. Don\'t let the length of the
My 1985 Z-51 probably hadn\'t had the exhaust system out in 10 years. Needless to say, the exhaust header studs were rusted a bit and weakened by the years of heat. All the nuts came off except for one which snapped. The studs that were still there were bent - they seemed to be made of a material similar to what coat hangers are made out of. I took the exhaust manifolds off and brought
The later alternators 1993? and up do not use the retaining plate with the 3 screw but instead the bearing is held in by staking the aluminium. On these alternators a puller has to be used with extreme care so as not to crack the front housing.
Sometimes the electronic climate control display can intermittently \"black out\" and then later come back on again, as mine is now doing. According to Gordon Killebrew this can be due to corrosion on the circuit board card edge fingers. He suggested removing the cover plate from the control unit to access the printed circuit board card edge. Take a pencil erasure and carefully rub each card edge trace until bright again, doing both sides if
How to Replace Your Front Brakes by Lars Grimsrud SVE Automotive Restoration Musclecar, Collector & Exotic Auto Repair & Restoration Broomfield, CO This tech paper will discuss the replacement of the front brake pads and rotors on the C-4 Corvettes. This paper deals specifically with the '84 - '87 model years, and applies generally to the '88 through '96 models. The rear brakes use the same process, so you can use this procedure as a
Finally, after 4+ years of ownership, I have repaired the dreaded floppy door panel syndrome that has plagued my car. You too may be suffering from this disease, where the top of the door panel pulls off the door frame and kinda hangs there, flopping around, only be held on by a few door screws and pegs at the bottom. The reason this occurs is because over time, the door panel top edge will pull
I rebuilt the steering column in my \'93 automatic using a column out of a parted-out \'96 manual. The steering colum core is pot metal or very low quality cast steel. The yoke around the pivot pins stretches and wallows out, allowing down-and-left play in the column that is disconcerting. it requires repair or replacement if you\'re serious about your driving. If you go the rebuild route, there are some notes to remember - Make
The wiring is straightforward, but finding a place to mount the sucker can be a problem. At the suggestion of many forum members, I mounted mine in the front passenger side area where the horn is located. The trick to this install is buying some aluminum strap, 1\" x .20\" by 3ft. I got mine at Sears Hardware for about $3. The first thing I needed to do was relocate the horn to make room
I\'ve found that \"Goof Off\", a great gum/tar and other stuff liquid remover is also great at renewing those faded C4 door handles. It can be found in most hardwares, Walmart, Home Dept, etc. Comes in a small 4.5oz can with a squirt top. Squirt a little on a soft cotton cloth (just enough to soak a small area) and gently rub into the handle for a minute or so taking care not to get
(The story with pictures is located at: http://www.corvetteforum.net/c4/marcho/rack/rack_replace.html The following is the text from that link) This will attempt to guide you through replacing the rack & pinion unit on your Corvette. Step 1: Jack up front end and place on jackstands. Remove two front tires. (oh, yeah, the hood is up, too. That\'s something you might want to do also!) Step 2: To make things easy, you have to remove alot of stuff. Look
EVERYTHING IN THE OTHER BOSE AMP FIX IS CORRECT INFO, BUT EVERYBODY THINKS IT\'S ONLY THE TWO 820UF CAPS THAT GO BAD BECAUSE THEY ARE THE BIGGEST ONES ON THE BOARD. IN REALITY THERE ARE SEVERAL ELECTROLIC CAPACITORS THAT CAN GO BAD ON THESE CARDS. AS ON ALL ELECTRONIC EQUIPTMENT ELECTROLIC CAPS TEND TO DRY OUT OVER TIME AND NEED TO BE REPLACED. THERE ARE TWO 47UF,THREE 10UF,AND ONE 4.7UF SMALLER CAPS IN THE
Well just a free mod you can do to your air box. Invloves cutting a massive hole in the box so more air can come through it. Seems to me like it does nothing except allow air to enter easily but I don\'t know if it allows MORE air to come in. Well install is straight forward. Remove airbox by unscrewing the 3 screws holding it together. Then unscrew the gasket holder that holds the
Best thing to do for no $$$ is to remove all the hoses/air tubes and the diverter box that go to the air pump and the exhaust manifolds, and all the associated brakets. You can cap off the manifold air tubes with 50 cent pipe caps from the hardware store. Removal of this alone will make your engine bay 100% cleaner and easier to work in. You can safely remove the two electrical connectors in
Ok...here you go.... for some, the Gear Shaft pin is a breeze, and for lucky ones like me, it\'s a nightmare........This is my guess for the single most difficult part of the install, so what I did, was to get a compressor (Rented) and bought an air hammer and some long chisel/punch bits. I think the ideal thing would be a rivet tool, which has a flat head on it about 1-1/2\' in diameter to
When replacing the air filter , I noticed the plastic airbox was warped. Judging from the type of plastic (Kydex?) this was no surprise. I read about using silicon sealant to build up the low areas, but since I am familiar with (some) plastics, I decided to straighten it. It\'s easy. You will need: * An ELECTRIC hot air gun (like the ones used for shrink-wrap tubing). NOT a hairdryer, NOT a propane torch.
While replacing the battery in a \'92 I noticed that the large harness that runs behind the battery tray had the wire loom worn off by rubbing against the rear of the battery tray - this tray has a lip that is rather sharp. Before any wires were frayed, I decided to repair the wrap - but instead of using the same wire loom, I installed a section of 5/8\" radiator hose; split the hose
After trying the two ideas mentioned in the other article on this subject, my ECC still was blinking on and off. A friend of mine and I got curious, so we took the printed board off of the faceplate, and the solder was cracked on the inside of the faceplate. We simply touched a hot soldering iron w/ just a little bit of solder on it to each point where the plastic terminal meets the
Ok, was tired of the dull/worn appearance of my seats. Tried the conditioners/cleaners but still wasn't happy. The seats aren't that bad (you'll see) but I was tired of sitting on dull rock-hard seats. Time for replacements. I decided to go with the Leather-Like covers from The Last Detail ... http://www.tld-corvette.com They were $300 bucks. Since the originals were only good for about 5 years of "regular" use (she's no trailer queen) I figured I'd
How to correctly and inexpensively correct the 'Inf Rest' light on 1990 Corvettes. The 90 is infamous for this light staying on. It seems that there are two sensors, one on the frame underneath the battery box, and one underneath the windshield washer container. Both bolt directly to the frame. These little electronic wizards detect a crash via vibration in the frame, and then set off the air bag. The problem is two fold. First,
I thought I\'d share a \"How-To\" regarding an LT1 to LT4 instrument cluster R&R Here\'s what we\'re doing... From this To this Tools you\'ll need: - Torque wrench (in/lb) - Torx bit set - Phillips head screw driver - 7, 10, 15mm sockets w/ratchet - 6\" ratchet extension Before doing the job, it would be a good idea to disconnect the negative battery cable. The service manual does not stipulate this, but calls for disabling
I\'ve been piddling around with a fix for this, because I\'ve seen a bunch of posts on this topic. I used a can of black Plastikote rubber coating, and cut it down with thinner until it had a paint-like consistency. I then used my airbrush and compressor to spray several coats on spare pieces of plastic trim, and let dry. Not only does it look really good, but I don\'t think you could chisel this
If your hood release cable breaks, you will never have a problem accessing your engine compartment, if you follow this very simple procedure as a precaution: Cut two pieces of BRAIDED NYLON TWINE about 3 feet in length. The twine diameter should be about the diameter of a pencil lead. Burn the ends using a match to prevent unraveling. Locate the latch mechanism. You will find it attached to the cable end. Secure the nylon
Ecklers Part # 38171 $25.99 Hardware not included For reference, this part will be called the extinguisher This part will be called the mount Required Tools Drill. A hand drill will work, you are only going through fiberglass. 1/4 inch drill bit 2 wrenches of whichever size bolts/nuts you use This is possibly the most important part of the installation. The test fit needs to take several things into account. I am short, and therefore
It is possible for novices to install a glass window top to their early C-4 convertibles. I should know, I am as novice as they get! For 86-93 Corvette owners that can no longer stand their plastic window, here is my experience in converting the vinyl top to cloth with heated rear window. First, let�s start with the supplies and parts you will need: Stayfast Cloth Top � Robbins: http://www.robbinsautotopco.com/pdf_files/page47_49.pdf http://www.convertibletops.net/Corvette%20-%201986-1987.htm Installation Video � John�s
Changing the fuel filter on a 1993 C4 Tools required: 16 mm and 13/16 inch open/box end wrenches, 13/16� socket, 10 mm open end wrench, 10 mm socket, safety goggles, latex gloves to keep the gas off your hands in case you get to hold your lady that night, small to medium size hands, a fire extinguisher close at hand, and finally, two buckets of patience. If you tend to have a lot of table
I recently performed this small feat by not following the Haynes Manual instructions. For the driver\'s side valve cover removal the manual descibed removing the serpentine belt and the alternator in order that the valve cover could be moved forward for removal. I noticed the cover for the wiper motor at the firewall and with just 3 screws to remove I had the the wiper motor cover off and enough room once I pulled off
After my air condition broke down the third time on my 88 Vette I decided to forget this damned thing and asked myself why not use the condenser as an oil cooler for the automatic transmission? The condenser sits in front of the water cooler. Remove the panel to access the water cooler and the condenser. Now the oil cooler lines and the condenser lines are different in diameter (approx. 0,9mm and 13mm). So you
I used to have to slam my door every time to get it to close all of the way. I also had excessive wind noise from a window which wouldn\'t seal properly. One day I decided I was going to get serious and fix the problem once and for all. I had already replaced the hinges (lift the back of the door up and down while open halfway or less to check these for excessive
This tip provides additional information to the Tech Tip "FIXING YOUR C4 SPORT SEAT LUMBAR SUPPORT" authored by Bob Thibodeau on 6/15/2001. 1. An alternative source for material to replace the ruptured diaphragm is a bicycle inner tube. It is much thicker than the original diaphragm, and should provide longer "life". To prepare the tube, cut a square about 2" X 2". Locate the center of the square by intersecting the lines from each corner.
Going over a \'92 in some detail, I have noticed while changing the air cleaner that the black plastic housing had become mis-shapened over time, that is; the bottom portion of the lid lip on both sides (not top or bottom) had sunken and would not allow for a tight seal with the air filter. This created roughly a 1/4\" gap along both sides of the air cleaner and housing allowing contaminated air to enter
How to Repair & Refinish Interior Plastic Pieces by Lars Grimsrud SVE Automotive Restoration Musclecar, Collector & Exotic Auto Repair & Restoration Broomfield, CO Rev. New 5-7-01 Having seen some pretty rough-looking 'Vette interiors, and some rougher-looking 'Vette interior repair & refinish jobs, I thought I'd put together a little how-to on making your black plastic panels look better than new again. Supplies needed: (All supplies are available from most automotive paint supply stores. I
Problem For C4 Corvettes with dual fans, the Aux Fan Sw only controls the auxiliary fan. The ECM controls only the main fan. When a low temperature Aux Fan Sw is installed to compliment a low temperature thermostat only the auxiliary fan comes On at a lower temperature; the main fan still comes On at the stock setting. This often results in inadequate air flow to properly cool the radiator in slow moving traffic. Solution
>>LT1 P/S Failure Overview: The previous owner of my car had 2 types of recurring, very frustrating failures of a \'93 LT1. This resulted in DNF\'s and mandatory trailering after about 12 of 24 road track events. We battled these issues by installing fresh factory and aftermarket parts. This was fruitless. Special SCCA Trans Am Team Racing adapters with Custom Earl\'s connectors on braided lines also failed! After scratching my head for 6 months, I
Manual control of your cooling fans I have a 92 LT-1 convertible with the 6-speed transmission. I, also, have a Meziere HD electric water pump installed. This Tech Tip will explain how I installed switches that allow me to turn on the primary and secondary cooling fans. When the switches are turned off, the ECM regains normal control over the cooling fans. Placement of the switches is up to the owner, but I will explain
For all you guys out there with blowers and turbos, listen up: You\'re getting ripped-off when you buy the silicon hoses from the blower manufacturers. Go to an 18-wheeler supply place, like Stewart & Stevenson, and they sell all the freaking silicon elbows you can imagine. Every angle, every size (up to 6\" diameter!), every length. Their prices are about 1/3 of Vortech, ATI, etc. They even have this ultra-trick tubing that\'s made just for
Forum members ought to know that there is an alternative to converting an R-12 A/C system to R-134a. R-406A is a federally approved direct replacement for R-12. The procedures for use are the same as with any refrigerant. You typically would not add refrigerant to any system but would rather reclaim what is in the system and recharge with new or recycled product. If the system is significantly low on refrigerant and has a high
There has been a question recently on this topic-so I thought I\'d actually post this link along with some other info. www.epa.gov/ozone/title6/609/retrguid.html It\'s not an add! Just updated info on whats needed or not needed to make it work. Sorry for just giving a link-but I don\'t think I could type all that info in here! I waited until my compressor died, then did the swap. Basically followed the epa.gov site\'s recommendations along with the
Rubber Bumper Repair Basics by Lars Grimsrud & Butch Powers SVE Automotive Restoration Musclecar, Collector & Exotic Auto Repair & Restoration Broomfield, CO This tech paper will discuss basic repairs to the rubber & plastic bumper facias typically used by GM and other automakers. These rubberized components have been around since the GTO "Endura" bumpers of 1968. The parts often erode, tear, or get gouged, but can be easily repaired to like-new condition if the
When replacing the outer window seal it is not necessary to remove the door panel. Simply hold the new weatherstrip up to the old one still on the door. Mark the clip locations with masking tape on the side of the door so you won\'t have to guess where they are. Also note the three pop rivet locations. (one at each end and one about 2/3 to the front) Protect the window(down) with something like
Recently I had to remove the air cleaner plenum for the first time. Unfortunately, when I tried to spin the plastic thumbscrews holding the plenum, they simply spun and did not release the plenum. Having never removed the plenum before I didn't know how it was attached to the radiator shroud below it. I consulted the service manual and some pictures in various Corvette parts catalogs and realized that the plenum studs were inserted into
Meziere HD Coolant Pump Install for the LT-1/4 Let me begin with my situation before I started this upgrade. I have a 92 LT-1 convertible with the 6 speed tranny. I had an oil leak coming from the driven shaft seal of the water pump. After removal of the water pump I saw that it was leaking coolant out of the weep hole right onto my opti-spark. After I removed the opti-spark and disassembled it,
This was my first time removing an automatic transmission from a Vette so I thought I\'d share the experience. First off, you\'ll need to get the car elevated. I managed to pull this off with the car on jack stands and less than 13 inches of clearance. Don\'t even think about reinstalling the tranny without a lot more clearance than that. Also make sure you\'ve drained the transmission. Next step is to remove the exhaust
This is just another view of this procedure that was published 6/15/01. Horse power can be increased by cooling the air that passes through the throttle body, My '93 routes hot coolant through the throttle body to prevent the valve from freezing. The hot coolant also heats the air in the summer months. So, if you don't live in a freezing climate, here is a very simple procedure that anyone can perform with a screw
I was replacing my bushings with Energy Suspensions Hyperflex Kit 84-95vette.When you install the new one piece bushing for the upper a-arm they show you a diagram using an arbor press and how to place them on the rod that runs through them. The one side is two piece and easy to do. The opposite end has to be pressed in after the other is assembled. It will not go in with a hammer
How to Repair & Rebuild your Alternator by Lars Grimsrud SVE Automotive Restoration Musclecar, Collector & Exotic Auto Repair & Restoration Broomfield, CO This tech paper will discuss the disassembly, diagnostics, and repair of GM Delco alternators used after 1971, and specifically discuss the alternators used from 1971 to 1988. Alternators used after 1988 are similar, and the same techniques and principles apply (called the "CS" alternators). Alternators fail frequently, and good rebuilt units are
by John Richman How do you get under a C4 to change oil & filter? Conventional ramps are too steep and perilously slip. I made a set in the Fall in a few nights for under $45. Start with 10 clean 2x6x8 pine boards. Mark 27\" in from each end and draw a line from top to bottom. Saw all 10 on that line. That gives you 20 sections. Glue and using threaded rod,
Many Corvette owners on CorvetteForum.com have complained about "windshield wiper collisions" and offered various solutions for curing the problem ranging from replacing the 20" wiper blades with 18" units to re-adjusting the wiper drivetrain. None of the recommended solutions seem to work in every case. Replacing the wiper blades proved difficult because even if you could find shorter replacement blades that would fit the wiper arms, they were often too tall to fit under
Gordon Killebrew www.gordonkillebrew.com and Ron Kane www.kaneauto.com taught this class in June of 03. Here are the notes I took: When replacing weatherstrip use GM parts for a 95/96. These are the latest designs and will fit and work best. When doing wiring you can prevent corrosion at the joints by using metal connectors from a computer supply store. Use a roll crimper from SnapOn or Packard/Delphi and then shrink tube. The fuel apron around
Banished squeaks from my top today. First remove the trim from the windshield header. Next, loosen the mounts on the top itself, front and rear. Next, snug the top down normally, but leave the front and rear bolts finger tight. Then loosen both front windshield mounts (the part on the windshield frame itself). Then take a ride, and let the top jiggle around until it finds its happy place. Then tighten the front mounts on
For those of you experiencing difficulty with the 1 to 4 shift lock-out, or for those of you who wish to experience shifting through all your six gears, here is a simple fix: on the passenger side, just in front of the fire wall, and mounted on the fender well, is a relay, that when disconnected, will disable the 1 to 4 lock-out allowing you a very smooth shift transition through all 6 gears. Simply
The credit for this tip really belongs to FrankD. I was getting annoyed with my headlights constantly flipping on and off on my c4 every time i drove through the shade. My car was originally a Canadian car, and had no way to shut this feature off. To disable the lights, carefully pull the light sensor located directly above the speedometer out of the dash to expose the 2 wires running in to it. Place
Full illustrated instructions found through this link:http://personal.tmlp.com/scorp/vette/images/ujoints/index.html
You can make the LT1 \'92-\'94 Optispark setup more reliable than a �95-�96, even with the early distributor configuration. Buy a $12 \'96 GM Vette distributor vacuum harness assy. Buy a $4 clear plastic fuel filter. Buy a $3 tube of premium black Permatex RTV, because it withstands the highest temps. Reserve a long day to fiddle around. Here\'s how it all goes together: 1a)Disassemble and clean the inner and outer cap & rotor assembly
Due to several e-mail inquiries, here are the instructions for removing the power antenna motor for service BEFORE installing a new antenna mast on 1992-1996 Corvettes. Many owners (myself included) have tried in vain to simply install a new antenna ribbon without inspecting the motor first for broken sections of the old one. The usual result is an antenna that won't fully raise or retract, even though the motor works fine. Hopefully, this tech tip
In June of 03 I attended a C4 workshop at Bloomington Gold taught by Ron Kane and Gordon Killebrew. When asked the question: \"Which tires are best for all around use on the C4?\" They both stated that their customers and clients seemed to be very happy with Firestone Firehawks. They have great traction, good life, run very quiet, and ride smooth.
Parts: None (hopefully) Estimate time: 10 minutes per side. Tools Needed: Phillips Screwdriver, Loctite, Dielectric Silicon Preliminary Information: The mirrors are held to the adjusting motor by a small �+� shaped piece called a pinion. The pinion attaches to retainers on both mirror and motor. There are two threaded rods attached to the mirror, one on the outer portion and the other on the bottom. These treaded rods are inserted into the motor for adjustment.
http://www.the-reeds.com/optispark_conversion.htm The Optispark is the distributor that was installed on all late model LT1's and LT4's. This distributor was installed on : 1992 - 1996 LT1/LT4 Corvettes (Y-Body) 1993 - 1997 LT1/LT4 Camaro's, Trans Ams (F-Body) 1994 - 1996 Fleetwood (D-Body) 1994 - 1996 Impala, Caprice, Roadmaster (B-Body) The concept of the Optispark was a great idea. It allowed for very accurate control of the spark to each plug. The cap and rotor were
If your remote seems intermittent or requires a shake to work, try cleaning the motion switch: Open the remote case. The switch is the gold tit thing between the buttons. There is a small ball in there so don't lose it when you take the cover off. Remove the whole circuit board from the case and turn it over. Push the 2 gold tabs to pop off the cover. Clean with alcohol and reassemble. The
This is not MY tech tip in any way. This is something that I stumbled across on the corvetteforum, and thought it would be useful here. Simply click on the links. Change your fuel filter, page 1. Change your fuel filter, page 1. Thanks to, lord vette, for the original post! -Sheppe Pharis (aka 92BAV)
The engine in my 93 is basically stock, and I do not foresee my going into the motor in the near future. The main reason I wanted to change the Eprom was to lower the temperature at which the cooling fans turned on, I did not like the factory setting of 226�, and to raise the MPH at which the transmission shifted into overdrive. I did not like the extra wear on the transmission as
Headlight Motor Repair Procedure The following instructions detail the repairing of the headlight motors for the C4, using Tools Needed: 1/4\" drive 10mm socket 1/4\" drive 13mm socket 1/4\" drive Torx #30 Nutdriver with 1/4\" socket Hammer Pliers Small punch Awl or sharp nail Truarc snap ring pliers Materials Needed: WD-40 Hand Cleaner Grease Parts Needed: 2 Ecklers #29304 kits or equal $4.95/each (additional instructions come with the kit) Step One: Marking the position of
C4 4+3 Overdrive Bypass This mod will bypass the ECM and allow \"on-demand\" overdrive operation (in any gear, at any speed, whether warm or cold). Disclaimer: I accept no responsibility for any malfunctions or damage resulting from this modification. Proceed at your own risk! This modification assumes your Overdrive is operating correctly, and all wires and connections, relays and switches, are present and functional. I recommend disconnecting your battery before proceeding. If in doubt about
This page describes the replacement of the passenger side "breadbox" on a 1987 Corvette Coupe. The breadbox is being replaced with a kit from Mid-America Designs. There are several other kits that I have seen. One has a map pocket in the front. Another has what looks like the breadbox but has a small glovebox inside a door that flips open. I have also seen carbon fiber and wood grain filler panels. To each their
Thanks to TomH91 for the tip (and promise that it would work). I replaced my front hub bearings with 1994 Firebird parts. Why? Cuz the SKF bearings are in stock at Pep Boys for $109 and the vette parts have disappeared at prices below $200. What\'s the difference? Hardly anything. The Firebird flange that bolts to the knuckle is over 1/8\" thicker, but the dimensions between the faces of the flanges is identical. So we
This is not an advertisement, I\'m merely passing on some info so that people will not have to build their own ramps. I got a set of Rhino Ramps from Autozone for my \'98 Z-28. They are specially designed for low cars. The treads are 11\" wide, and the ramps give 6.5\" of lift after a 21\" incline. They are rated at 12,000# GVW, and only weigh about 10# ea.! The stock spoiler on my
I take no credit for this info. This info was given when I asked \"how to\" and I thought I\'d polish & post it for future reference. Thanks to all for the help! LT-1 Coolant Change Procedure: In order to do a good flush you have to remove both knock sensors out of the block, which are on each side of the oil pan. When you go to remove those knock sensors, use either a
First, let me qualify this post: This fix is for most BOSE amp boards in C4 Corvettes. If your amp board doesn\'t look similar to the one shown below, yer outta luck. From my experience (and that of others) I give this fix a 70% success rating. I CAN\'T POSSIBLY GUARANTEE THIS WILL FIX ALL BOARDS, but if it\'s between spending $85 and $150 to replace a board, I suggest you try this fix
I have a 1992 LT1 that had a very random start problem. Fuel Pressure was Ok, Spark to plugs was fine, no error codes were set in ECM. Once the car started it ran fine. Finally took a #47 (12Volt) bulb and put it across the fuel injector wires. Found that when the car was dead the lamp never lit at any cylinder. But when it started I could see the ECM lighting the lamp.
Throttle Body maintenance 101: READ THESE INSTRUCTIONS ENTIRELY BEFORE STARTING THIS PROJECT! (YOU WILL NEED A DIGITAL MULTIMETER IF YOU TAKE THE TPS OFF! DON'T ATTEMPT TO REMOVE THE TPS IF YOU DON'T HAVE ONE, IT IS MANDATORY!) You should also buy the gasket kit from GM that includes the 4 gaskets and costs about $25. Using your screwdriver remove the air duct in front of the throttle body, now open the throttle by hand
Most instruction manuals indicate that you should place the Master Cylinder in a vise and then use a dowel rod to press on the plunger to bleed the air out of the Master Cylinder. I found an easier way is to bleed the air out of the system backwards. Supplies: Fittings for bleeding hose (usually included with new Master Cylinder) Bleeding Hose (usually included with new Master Cylinder) New pump oil can (New to make
I have gotten lots of emails for this write up so I\'m dropping it in here also. Front spring removal on a C4 Corvette (This covers non adjustable suspensions. However adjustable suspensions should be the same except the shock & actuator removal & handling.) NEVER PLACE ANY BODY PART UNDER OR NEAR THE COMPRESSED SPRING! IF THE SPRING BROKE FREE IT COULD MAME, CRIPPLE, OR KILL YOU. PERIOD! TREAT ANY COMPRESSED SPRING THE SAME WAY
Background The \'85-\'89 L98 uses an Electronic Spark Control (ECS) module to listen to the Knock Sensor and report ping to the ECM (on \'90-\'96 Corvette motors the ECM listenes directly to the Knock Sensor). When the ECM detects knock counts it pulls timing till no knock is reported and then gradually increases timing to the current setpoint. Problem Even with base timing at +6deg and running the stock MemCal chip, my \'88 L98 was
Tools and materials required: Socket wrenches, � drive, SAE and metric sockets, Phillips and straight bladed screwdrivers, flashlight, needle-nose pliers, torx screwdrivers, electric drill and bits, 3/8 X 1 inch rivets or �-20 X 1 inch stainless steel nuts and bolts, grease, Loctite, RTV silicone, replacement motor from Ecklers ($90 with S & H), 12 volt test light, electrical jumper leads, battery charger capable of 6 amps output, duct tape, and of course the
Let me save you some money. The $400 stock OEM C4 pump is nothing more than a generic GM V8 LT1 Caprice station wagon pump with a different pressure control valve installed to provide higher effort steering. The C4-specific valve is available separately from GM for about $18 and it drops into the high pressure hose port. If you have a bad pump, you might consider a $50 Pep Boys Caprice pump with a new
Lowering the ride height on your 84-96 Corvette by Bill Rauch Whenever I think about lowering a car, the old Cheech & Chong movie pops to mind that begins with Chong strutting around his "Chebby" dusting it off to the tune of "Low, Low, Low - Low Rider". Well, to quote famous engine builder Myron Cottrell, "Lower is better". I often wondered about the lowering options available to C-4 owners, and just completing the job
This method worked for me on my PKE-equipped \'93 Corvette. Another guy and I shook the car so much the keys slid off the dash and onto the passenger floor! Anyway, here\'s how to save a call to the locksmith... What you\'ll need: 10-ga. wire, about 3\' long (a coathanger might work, but generally the gauge is too light and it bends too much) pliers to bend the wire electrical tape earplugs (optional, when you
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