Speed density was the first fuel control system used on 1982-1984 Corvettes. It was also used on the 1990-1993 cars. Speed density uses a manifold absolute pressure sensor (MAP sensor) to calculate the necessary fuel load. The 1990-1991 cars have a MAP sensor bolted directly to the intake plenum. The 1992-1993 cars have the MAP […]
Category: Tech Tips
C2, C3 & C4 Air Conditioning A/C Retrofit
Basic System Operation The compressor pressurizes the refrigerant then it enters the A/C condenser as a gas. The high temperature, high pressure gas is cooled as it goes through the condenser. This changes the gas to a liquid. Then the liquid goes to the evaporator through an expansion valve or metered orifice. This quickly depressurizes […]
C2 & C3 Troubleshooting
By Chris Petris The most important tool to use when troubleshooting is a good memory or notes. If necessary, write down as much information as possible. This will help compile a troubleshooting notebook. A factory service manual is an invaluable tool when diagnosing problems. A road test is very important and notes should be taken […]
C4 Interior Overview
The C-4 interior is comprised mostly of plastic. The 1984-1989 dash carrier is made entirely of plastic. All of the plastic dash fascia can be damaged quite easily just by over-tightening the screws. I use a screwdriver or a clutch-operated power screwdriver. When using a clutch-operated screwdriver, be sure to use the lowest setting to […]
Automatic Transmission Maintenance
If you own a 1984 to 1996 Corvette you probably have an automatic transmission. Most Corvette owners prefer the automatic transmissions to the manual transmission. This means that most of you reading this article have an automatic transmission in your Corvette.
Corvette Cooling System
As summer approaches and temperatures soar to record highs, we would like to focus on your Corvette’s cooling system. Although it may seem more important to check the A/C system to keep you cool, you also need to make sure the cooling system is working properly for optimum A/C performance. As engine temperatures increase, A/C […]
C3 Door Hinge Spring Installation
To keep your doors in the open position, replace broken springs. And to make the job easier, use the handy installation tool for an easy 10 minute installation.
1984-1996 Shift Knob Removal and Installation
Tools Required: Small flat screwdriver, snap ring pliers, safety glasses Wear safety glasses during this installation, particularly in steps 2 and 5.
1968-82 Corvette Upper Windshield Frame and Windshield Replacement
I purchased a fathom green ‘69 big-block tri-power T-top coupe with only 42,000 original miles on it recently. I’m the third owner of the car, and I got it for a very good price because it needs some heavy doses of TLC. The car had been exposed to the weather during its 31 years of […]
C1 and C2 Corvette Cigarette Lighter Alert
We recently discovered a change by GM (and part manufacturer CASCO) in their cigarette lighter housing that could cause 1966 and older Corvettes to short out and burn their wiring harness. The change is a small bi-metal element added to the rear of the housing where the power wire connects. It was added because of […]