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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

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Old Mar 14, 2009 | 02:50 PM
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Default Icm
Where can i find an icm cheap, there expensive little basterds.. Anyways if anyone knows a website where you can find them cheap shoot it my way. Also if anyone could explain the icm job a little better to me so i oculd help troubleshoot my car that'd help me to
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Old Mar 14, 2009 | 02:55 PM
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Originally Posted by Kmaroman
Where can i find an icm cheap, there expensive little basterds.. Anyways if anyone knows a website where you can find them cheap shoot it my way. Also if anyone could explain the icm job a little better to me so i oculd help troubleshoot my car that'd help me to
What I would try to do if I were you is to find someone else with a good running LT1. Swap the coil and ICM together. Drive the car and see if it still has the same symptoms. If it does, then it's not the coil or the ICM. If it doesn't, then you know that either the coil or the ICM is bad.
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Old Mar 14, 2009 | 03:17 PM
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I just bought a brand new coil msd highly doutable that its the coil, i also got some plugs an wires ordered. I'm hoping its the icm, since it only seems to do it while its hot. I'm guessing when the car gets warmed up the icm get hot an malfunctions? But if i can find someone ill try it
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Old Mar 14, 2009 | 04:19 PM
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Originally Posted by Kmaroman
I just bought a brand new coil msd highly doutable that its the coil, i also got some plugs an wires ordered. I'm hoping its the icm, since it only seems to do it while its hot. I'm guessing when the car gets warmed up the icm get hot an malfunctions? But if i can find someone ill try it
You could perform the ICM cooling mod and see if it helps.
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Old Mar 14, 2009 | 09:10 PM
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Thats what made me guess it was the icm, yeah I'll have to do that tommorow. Thanks
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Old Mar 14, 2009 | 09:43 PM
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could the icm cause a no start condition or no?

sorry to hijack
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Old Mar 14, 2009 | 11:45 PM
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You can find a ICM at your local junkyard(s). I just went today and found a Coil and ICM at my local junkyard. I paid $10 bucks for the two. Give it a shot.
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Old Mar 16, 2009 | 08:32 PM
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update i did the icm cooling mod, any it runs fine. It could probably use a new sensor but its all good now it stays cool enough that i can touch the metal heat sink.
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Old Mar 16, 2009 | 08:53 PM
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Originally Posted by Kmaroman
update i did the icm cooling mod, any it runs fine. It could probably use a new sensor but its all good now it stays cool enough that i can touch the metal heat sink.
Nice, if that solved your problem, I'd save up for a new GM ICM. But glad you got it solved.
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Old Mar 16, 2009 | 08:55 PM
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yeah thanks for reminding of the icm mod 4:10 gears an msd ***** on the way to help me fly
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