A brief history, car (94z) was running fine when cold, and as it came up to operating temp., it would cut out and shutdown. Scanned it and everything pointed to the icm. Replaced it with a new GM unit and now the car barely idles when started. It's not throwing a SES light, and I'll probably have a friend scan it again this weekend.

Everythings connected and tight. Am I overlooking something simple? Coil is new also.

Any ideas?

 

Did you get all the grounds connected back to one of the two bolts that holds the ICM and coil to the head? How much cranking (if any) did you do while trying to diagnose the problem? If you cranked it a bunch, without it running, there's a good chance you fouled out some plugs. I did this when my ICM died.

 

The car starts easy, it just won't idle right. I don't think the plugs are fouled. I'm pretty sure I got everything hooked back up, but I'll double check this weekend. I dunno