C4 Archives - Page 52 of 59 - CorvetteForum

Tag: C4

How To Straighten a Warped Airbox

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: * […] More »

By: | April 21, 2010


How to Upgrade Driving Lights

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 […] More »

By: | April 21, 2010


HVAC Diagnostic Code Translation 1990-1996

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 […] More »

By: | April 21, 2010



Idle Air Control (IAC) Valve for LT1 and LT4

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 […] More »

By: | April 21, 2010


Inf Rest Light on 1990 Corvettes

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 […] More »

By: | April 21, 2010


Installing a Custom Eprom

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 […] More »

By: | April 21, 2010


Installing a Fire Extinguisher in a C4

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 […] More »

By: | April 21, 2010



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