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Car starts and runs for 3-6 seconds and just shuts off??

Forum: C4 Electrical, Body and Interior

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Car starts and runs for 3-6 seconds and just shuts off??

Posted: 11/5/21 12:38pmMessage 1 of 5
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Vette(s): 1996 LT1

1996 Base Coupe, new battery, fuel pressure regulator.  Hello all, I had an issue with a $1,600 Corvette I just bought the owner told me it would start up and shut off after three to six seconds. It does do this still. I did the fuel pressure which is good plenty of spark everything seems normal it starts up perfectly fine idles beautiful and then shuts off after three to five seconds. Anyone have any ideas? Thank you in advance.

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Re: Car starts and runs for 3-6 seconds and just shuts off??

Posted: 11/5/21 3:07pmMessage 2 of 5
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Equinunk, PA - USA
Joined: 10/31/2007
Posts: 2569
Vette(s): 1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.

Greetings, Pick up filter in the tank?

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Re: Car starts and runs for 3-6 seconds and just shuts off??

Posted: 11/5/21 6:12pmMessage 3 of 5
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Duncanville, TX - USA
Joined: 11/8/2003
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

I'd be suspicious of the factory antitheft system. Have you tried getting any diagnostic codes out of any of the systems?

Joel Adams
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Re: Car starts and runs for 3-6 seconds and just shuts off??

Posted: 11/6/21 5:07amMessage 4 of 5
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Vette(s): Black 1979 L-82 Black 1996 LT1 Black 1999 Coupe
Adams' Apple said:

I'd be suspicious of the factory antitheft system. Have you tried getting any diagnostic codes out of any of the systems?


That....or....

 I would check for spark when the car will not start.

Look at ICM (ignition control module), and then head to the opti-spark.

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Re: Car starts and runs for 3-6 seconds and just shuts off??

Posted: 11/11/21 5:22pmMessage 5 of 5
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Water in the Opti-Spark. Mine would go a little farther but did same. I posted pictures quite awhile ago but it was rusted inside. Problem is the pain to get there. The cooling vent was leaking








|UPDATED|11/11/2021 5:22:42 PM (AZT)|/UPDATED|
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