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Whoa, ICM in half?

fri3dchick3n

fri3dchick3n

New member
Well I have been having this slight misfire on my GTP for a little bit. I would moniter it from my awesome aeroforce. Cyl 3 and 4 would misfire slightly. cyl 3 would be between 2-12 sometimes and cyl 4 would misfire between 2-6.

I tried cleaning up the coils before and it helped only a little bit.
New plugs gapped @ .055

So I wanted to try to clean up the coils and confirm that it wasnt the problem and maybe rotate them around.
When I pulled the last coil off this bracket piece was very loose and came off.

Not sure what to do, Is this ok? Or time to get a new one?

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Ok, well I tried cleaning up the the square bronze prieces because they look important. I used some sand paper. Cleaned up the coils connectors to the plugs. Made the misfire worse. Cyl 3 & 4 now misfire up to 8 each. Coils were swapped so im now thinking, ICM connection somewhere or plug wires.

Plug wires are AC Delco 7mm and were replaced Jan last year, I did not put the heat shields on them after the header install. Could that interfere with the wires over heating?
 
Fivefingerdeathpunch said:
Got any friends with a 3800?

If so, swap and ICM with them and see what the car does, if misfires go away, prolly the ICM at fault.
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Ive only seen one other modded gtp here in Alaska, barely see him driving around too. Pretty much a lonewolf on this car. But I did. MOre reading and I guess it's common for these cylinders to misfire some at idle, I'll just leave them be as long as they don't get worse.
 


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