C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

LT1 shuts off while running

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Old Sep 29, 2009 | 10:46 PM
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therbst
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Default LT1 shuts off while running

Hopefully someone here can help me with my problem. I have a 95 LT1 The other day while I was at a stop light the car completely shut down. No lights, nothing at all. I had to put the car back into park and restart. This is the 4 time it has done this. This has never happened before. Are there any suggestions on where to look? Thanks
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Old Sep 29, 2009 | 11:31 PM
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Originally Posted by therbst
Hopefully someone here can help me with my problem. I have a 95 LT1 The other day while I was at a stop light the car completely shut down. No lights, nothing at all. I had to put the car back into park and restart. This is the 4 time it has done this. This has never happened before. Are there any suggestions on where to look? Thanks
If it's a sharp, quick shut-dwn, then that is yypical of the ignition control module. Gets hot, fails, car dies. Cools off, car restarts and runs fine.

If the car sputters a bit before dying, could also be the fuel pump going out.

The above are just guesses without more facts.
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Old Sep 29, 2009 | 11:55 PM
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Thanks 007 for the quick reply. Would the ICM/IM make the car just quit and shut down for no apparent reason. I was just sitting at a stop light, the engine was at operating temp. The ICM/IM appears to be pretty easy to replace, just 2 bolts on the right side cylinder head and $100 later.
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Old Sep 30, 2009 | 12:25 AM
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Is there anyway to test the ICM/IM??
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Old Sep 30, 2009 | 12:35 AM
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Originally Posted by therbst
Is there anyway to test the ICM/IM??
Yes, it'll just shut down.
They can test it...but it won't be hot so generally it'll test good.
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