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1990 C4 No Start Has Power

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Old May 9, 2026 | 01:50 AM
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Default 1990 C4 No Start Has Power

My 1990 C4 Corvette had been running fine for the past few months, but recently it started having trouble restarting after driving, like after stopping for gas or food. Cold starts in the morning were always fine. Today, after getting gas, it wouldn’t start at all: no crank or noise, but the dash lights still came on. I tried the spare key and got the same result, so I don’t think it’s the VATS system. I checked the battery while attempting to start it; it stayed around 12.4V and only dropped to about 12.1V. Could this be a bad starter or relay?

heartbreaking
heartbreaking
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Old May 9, 2026 | 08:46 AM
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The first things Id check are the all the connections/grounds at the battery and starter and stress test the battery.
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Old May 9, 2026 | 01:52 PM
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I almost want to take a guess at the ignition control module, but that'd still ony be a wild guess at it.

Do you know how to check codes? If so, have you?

Even though I'm not so sure that'd throw a code specifically.
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Old Today | 08:15 AM
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Originally Posted by shaunathan
My 1990 C4 Corvette had been running fine for the past few months, but recently it started having trouble restarting after driving, like after stopping for gas or food. Cold starts in the morning were always fine. Today, after getting gas, it wouldn’t start at all: no crank or noise, but the dash lights still came on. I tried the spare key and got the same result, so I don’t think it’s the VATS system. I checked the battery while attempting to start it; it stayed around 12.4V and only dropped to about 12.1V. Could this be a bad starter or relay?

heartbreaking
heartbreaking
I have a 90 vert and it does the same thing I believe it’s the ignition switch that is mounted on top of the steering column. Only. Thing that makes sense to me let me know if you find a different fault.
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