ICM location?
02-28-2019, 12:54 PM
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ICM location?
Hello. I have a 1992 Camaro RS v6 5-speed. It hasn't ran in a while. I changed the spark plug wires and the plugs. Also the distributor cap. I think it might be the ICM(ignition control module) but I don't know where it is on the car. I looked in a Haynes manual and it didn't help. So, where is it? Thanks.
02-28-2019, 01:13 PM
#4
Re: ICM location?
You can follow this guide to see where the issue is.
I have seen the pickup coil deteriorate with age. First I’d check for power to the icm. Key on it’s the small connector at the distributor the pink wire. If that’s ok check the pickup coil. See this link.
If you do remove the icm heat sink compound needs to be applied to the bottom of the icm.
https://easyautodiagnostics.com/gm/4...ed-icm-tests-6
I have seen the pickup coil deteriorate with age. First I’d check for power to the icm. Key on it’s the small connector at the distributor the pink wire. If that’s ok check the pickup coil. See this link.
If you do remove the icm heat sink compound needs to be applied to the bottom of the icm.
https://easyautodiagnostics.com/gm/4...ed-icm-tests-6
02-28-2019, 01:52 PM
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02-28-2019, 01:55 PM
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Re: ICM location?
Than what are you fighting, no injector pulse while checking with a noid light ?
If thats the case I can walk you through a few tests.
Since it’s been sitting awhile you might have a few issues keeping it from running.
assuming you have fresh fuel. The next step would be to check fuel pressure.
if all that’s good. You need to make sure you have injector pulse.
once you have pulse if it still doesn’t run your injectors are gummed up and need to be replaced.
If thats the case I can walk you through a few tests.
Since it’s been sitting awhile you might have a few issues keeping it from running.
assuming you have fresh fuel. The next step would be to check fuel pressure.
if all that’s good. You need to make sure you have injector pulse.
once you have pulse if it still doesn’t run your injectors are gummed up and need to be replaced.
Last edited by Tuned Performance; 02-28-2019 at 02:02 PM.
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02-28-2019, 10:01 PM
#9
Re: ICM location?
Do a simple ohm check on each injector. Pull the spark plugs to check for the appropriate combustion color. Buy a noid light from an auto parts store and try it on both sides of the engine. Verify fuel pressure.
Does it start but run poor? Does it not start? A failing ignition control module can still do a half assed job and be considered in working order according to regular tests but still cause a random misfire. Random misfire just gets worse and worse until it reaches no fire. My recent experience has also proved to me it's AC Delco only for ignition control modules, don't waste your time on store brands or Wells, airtex, master craft/force, Borg Warner or standard.
Does it start but run poor? Does it not start? A failing ignition control module can still do a half assed job and be considered in working order according to regular tests but still cause a random misfire. Random misfire just gets worse and worse until it reaches no fire. My recent experience has also proved to me it's AC Delco only for ignition control modules, don't waste your time on store brands or Wells, airtex, master craft/force, Borg Warner or standard.
03-04-2019, 09:47 AM
#11
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Car: I drive trans am. Duh
Engine: Yes, I have one in the trans am
Transmission: I have one of those too In trans am
Axle/Gears: In the rear of trans am
Re: ICM location?
As stated above, ac delco only. Also you do NOT need to pull the dizzy out to replace it.
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