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not firing

J

jlt

New member
I have a 97 grand prix gt 3.8L none super charged, having trouble with it stalling, and ignition control modules going out replaced 2 in less than a week .
just put third ignition control module still not firing .last week I had the car hooked up to computer tested crank sensor , cam sensor , coils,ect. all checked out to be good
 


What is leading you to thinking the ICM's are bad? It's not common for you to go through them, which is why I'm asking. I'm thinking the problem lies somewhere else like a crank sensor. They are known for testing good and making the car stall at times.
 
I replace crank sensor Sunday got it running, drove to work Monday . Then got in it to take it to the Pontiac dealers shop 2 hours later it would not start no spark, they are saying something in wiring it's not communicating , for the firing and fuel, the previous owner of the car butchered all kinds or wires.
 
Yeah that doesn't seem to common to go thru icm like that. Is there a heat sink on the back of those and if so did you apply the goop on it? Plz post pics of the wiring mess.
 


I don't have any pics of the wiring , it is still at the shop there was also a lot of spliced wires under the dash the shop is fixing them hoping that is what's causing the communication problem between the computer , firing and fuel. I did put the thermo paste on the ICM"S
 
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