ECM Question?
Thread Starter
Drifting
Joined: Jan 2001
Posts: 1,970
Likes: 21
From: Denville NJ
ECM Question?
I'm in the process of tracking down a code 43 problem on my '86 L98 iron head base coupe. The FSM diagnosis process appears to be leading me to replacing the ECM. I know I can buy an ECM and reuse my old PROM but is that the way to go? Is it possible that the only the PROM is bad? Should I be buying a new ECM and PROM? Can someone who has been down this road please chime in with your advice? Thanks for your help
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Did you finally figure out what ckt 457 was?? Well, yes you can buy a rebuilt ECM and use your PROM/chip and yes the PROM can be faulty too. You can also buy a salvage vette ECM with the chip already in it, but you want know if the chip has been messed with. Others might have better advise.
Thread Starter
Drifting
Joined: Jan 2001
Posts: 1,970
Likes: 21
From: Denville NJ
Originally Posted by RRT vette
Did you finally figure out what ckt 457 was?? Well, yes you can buy a rebuilt ECM and use your PROM/chip and yes the PROM can be faulty too. You can also buy a salvage vette ECM with the chip already in it, but you want know if the chip has been messed with. Others might have better advise.
At this point I'm going to try a new ECM with my PROM and see if that fixes the problem. Thanks for your help
Thread Starter
Drifting
Joined: Jan 2001
Posts: 1,970
Likes: 21
From: Denville NJ
Originally Posted by vader86
I'd be surprised if the ECM/chip is bad, thats almost never the case.
At this point I'll throw in another $100 for a new ECM and see what happens. Thanks for your help
Team Owner
Joined: Aug 2005
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From: Riverside County Southern California
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This is off topic but concerns the ECM.
Is painting the ECM from stcok aluminum to red bad? I was told it will not allow the ECM to cool off. Is this true?
Is painting the ECM from stcok aluminum to red bad? I was told it will not allow the ECM to cool off. Is this true?
