Tell tale signs of bad ECM?
Thread Starter
Junior Member
Joined: Feb 2004
Posts: 19
Likes: 0
From: Alberta
Car: '84 Firebird
Engine: 2.8L
Transmission: Automatic
Tell tale signs of bad ECM?
Well my car is running mighty rough right now. Shes running extremly rich, there is already a significant amount of carbon deposits on my 2 week old tail pipe. My check engine light does not come on apon start up, nor can I pull codes from it. The car rins the same if whether the ECM in connected or not. Does this sound like a bad ECM to you guys? or maybe I just have a bad ground/power wire for the ECM, any help would be appreciated.
TGO Supporter
Joined: Sep 2003
Posts: 6,127
Likes: 12
From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
Hello Manofsorrow,
Here is a troubleshooting that might help you find your problem. It is out of an 89 GM service manual but should give you and idea of where to look.
Here is a troubleshooting that might help you find your problem. It is out of an 89 GM service manual but should give you and idea of where to look.
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