Tag: C4

Disable Light Sensor for Automatic Headlights

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 […] More »

By: | April 21, 2010


Early Convertible Top Installation and Glass Retrofit

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 […] More »

By: | April 21, 2010


Early LT1 Power Steering Upgrades for Reliability at Higher RPM

>>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 […] More »

By: | April 21, 2010



Electronic Climate Control Intermittent

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 […] More »

By: | April 21, 2010


Emergency Hood Release

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 […] More »

By: | April 21, 2010


Five Cheap Mods That Add Up to 70 HP to a C4

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 […] More »

By: | April 21, 2010


Fixing a C4 Sport Seat Lumbar Support

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 […] More »

By: | April 21, 2010



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