Changing the ECM
Thread Starter
Instructor
Joined: Jan 2002
Posts: 182
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From: Edmond OK
Changing the ECM
I've got a 93 Corvette that I just changed the ECM on. When I put the key in the ignition, the ASR Active light came on. Then I tried starting it and it wouldn't turn over. When I took the key out of the ignition, a fan stayed on and the ASR Active light stayed dimly lit until I disconnected the negative terminal of the battery.
Any ideas what I could have done wrong? Maybe the ECM I have is incorrect? How can I tell?
Thanks
Any ideas what I could have done wrong? Maybe the ECM I have is incorrect? How can I tell?
Thanks
Thread Starter
Instructor
Joined: Jan 2002
Posts: 182
Likes: 0
From: Edmond OK
Re: Changing the ECM (Ozman)
Ok. I put the PROM back in the old ECM. Hooked the negative battery cable back up and the car alarm came on. Seems I left my keys on the seat inside the car. I had to search for my extra set and by that time, the alarm quit. I went to start the car up and everything just died. Figured this was part of the security system. Disconnected the battery and tried starting it again. The car will not turn over. At least the ASR Active light did not come on like with the new ECM. I don't know if I have damaged the PROM or what. I can't see where I did anything wrong. This whole adventure sucks. I've changed computer memory several times and can't see how I could have screwed this up. I did notice that when I opened up the new ECM to take the PROM out, there was a hint of a burning smell.
Maybe I put the connectors in the wrong order? Each of the 4 are a different color. What order are they suppose to go in?
Thanks
[Modified by Ozman, 4:18 PM 4/4/2004]
Maybe I put the connectors in the wrong order? Each of the 4 are a different color. What order are they suppose to go in?
Thanks
[Modified by Ozman, 4:18 PM 4/4/2004]
