Common questions

What to do if your ignition key goes bad on a corvette?

What to do if your ignition key goes bad on a corvette?

If you have no key to duplicate, many manufacturers can use the VIN number to cut you a brand new OEM key. Just be prepared to prove ownership to Chevy in some way. The Corvette’s ignition lock cylinder itself can go bad over time.

Can a car key get stuck in the ignition?

A key getting stuck in your Corvette’s ignition is not the most common problem. You can go the whole life of the vehicle and this typically won’t happen. Here are some of the most common reasons why the key would get stuck in the ignition. They are presented somewhat in the order of most likely to least likely to be the cause.

What happens when you start a C4 Corvette?

When starting an L-98 Corvette engine, a sequence of events take place that precedes the engine running. Knowing these sequences will help you troubleshoot no start issues with your C4 Corvette. C4 Corvette Start Sequence begins when you first turn the key to the “on” position, the fuel pump will run for 2 seconds pressurizing the fuel rails.

What does closed loop mean on a corvette?

In simple terms X+X+X= Output “Y” The computer then switches to “closed loop” mode meaning the Oxygen sensor’s output is being referenced and being used along with the MAT and ECT outputs for the ECM to adjust the injector pulse widths (more “ms longer” or less “ms shorter”) to maintain a 14.7:1 air/fuel mixture.

If you have no key to duplicate, many manufacturers can use the VIN number to cut you a brand new OEM key. Just be prepared to prove ownership to Chevy in some way. The Corvette’s ignition lock cylinder itself can go bad over time.

What causes an L-98 corvette to start?

When you start an L-98 engine Corvette, a series of events take place that causes the engine to run.   Knowing the sequence will help you troubleshoot no start conditions. Fuel Rail Pressurization: When you first turn the key to the “on” position, the fuel pump will run for 2 seconds pressurizing the fuel rails.

When did corvette go back to MAF engine?

Corvette used this approach in the 1990 and 1991 L-98 engines and in the 1992 and 1993 LT-1 engines. With the 1994 model C4, they went back to the MAF system. Note that MAF based systems are far more accurate since they measure air flow directly whereas the MAP system infers air flow indirectly.

What was the safety feature of the 1968 Corvette?

If you accidentally shorted a major electrical artery under the hood, there was no stopping it until the battery was disconnected and the ensuing fire was extinguished. 1968 brought many new safety features to every vehicle including the wiring.

When you start an L-98 engine Corvette, a series of events take place that causes the engine to run.   Knowing the sequence will help you troubleshoot no start conditions. Fuel Rail Pressurization: When you first turn the key to the “on” position, the fuel pump will run for 2 seconds pressurizing the fuel rails.

Why does my car run when the ignition is turned off?

With the ignition turned off and the car continuing to run, simply remove the plug from the alternator (DO NOT TRY AND REMOVE THE BATTERY POWER WIRE FROM THE POWER STUD!) and the car should shut off if the alternator is creating the problem. If it does not stop running, your feedback problem is coming from something other that the alternator.

Corvette used this approach in the 1990 and 1991 L-98 engines and in the 1992 and 1993 LT-1 engines. With the 1994 model C4, they went back to the MAF system. Note that MAF based systems are far more accurate since they measure air flow directly whereas the MAP system infers air flow indirectly.

If you accidentally shorted a major electrical artery under the hood, there was no stopping it until the battery was disconnected and the ensuing fire was extinguished. 1968 brought many new safety features to every vehicle including the wiring.

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Ruth Doyle