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

Ignition Control Module Issue

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Old Jun 13, 2007 | 08:34 PM
  #1  
mrrilla's Avatar
mrrilla
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Default Ignition Control Module Issue

I had a hard start condition on my TPI and my noid would not flash during cranking. The motor starts up with a small shot of ether though. I replaced my ignition control module and that worked. The motor started right up on its own and everything was fine. After a couple of starts, the issue came back. The ICM was bad.

What could cause the ICM to go bad? I am not sure how it works but could it be getting feedback from something else and "frying" it? If the ICM is bad, would the motor still run like it should? I followed my flow charts and it always leads to a bad ICM or connection.

Please help!
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Old Jun 19, 2007 | 04:31 PM
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SunCr
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Generally heat - but hard to imagine it was fryed again with only a couple of starts. Some of the Discount Chains use to test the Module and if there's one close by that can do that for you, you might want to take the time to be sure that it's bad. Otherwise, I'd suspect the wiring is frayed and grounding out somewhere - probably on the distributor body - or it's got a bad connection somewhere.
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