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Old 12-28-2010, 11:46 PM   #1
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what are the common symptoms of a bad ECM??

I am having multiple problems from multiple areas. I just bought, and have been working on this car that someone else gave up on. I am suspecting it is a ECM problem, but their are so many threads about drivetrain swapping related to the ECM that i am having trouble finding threads to give me the common symptoms of ECM problems.

92 3.1 manual

sorry wrong section, no wonder i couldnt find anything

Last edited by yellowsnow; 12-29-2010 at 11:45 AM.
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Old 12-29-2010, 11:53 AM   #2
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Re: what are the common symptoms of a bad ECM??

A bad ecm is hard to detect and especially pin point. You may run into issues such as stalling, bad idle, and hard starting. The most best way is to run the trouble shooting by grounding pins a and b in the ALDL. The common error would be a code 51 but the code 51 can also be a bad MemCal. Here is a page of the issue. Please post up the trouble codes that you are experiencing.
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Old 12-29-2010, 11:55 AM   #3
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Re: what are the common symptoms of a bad ECM??

If you want, I can sell you the TPI swappers guide which explains tons about the Tuned Port Injection System for dirt cheap.
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Old 12-29-2010, 12:09 PM   #4
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Re: what are the common symptoms of a bad ECM??

im going to work on it some more today. i have no speedo, oil pressure gauge, temp gauge, bouncing idle till warm, and it feels like their is no timing advance. Im sure it is either a wiring issue or the ECM. I'm going to spend the day tracking down wires then go from their.
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Old 12-29-2010, 12:13 PM   #5
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Re: what are the common symptoms of a bad ECM??

First get the trouble codes bud. Ill hook you up with the diagnostic sheets.
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Old 12-30-2010, 11:55 AM   #6
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Re: what are the common symptoms of a bad ECM??

alright i got my oil pressure and temp to work. pulled the codes 34 and 44. I checked my MAF or intake air sensor (whatever) and it has no resistance. So thats probly causing the lean code.
so i guess its not the puter. im going to start a new thread with my crazy speedo problem.
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Old 12-30-2010, 01:08 PM   #7
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Re: what are the common symptoms of a bad ECM??

Quote:
Originally Posted by yellowsnow View Post
alright i got my oil pressure and temp to work. pulled the codes 34 and 44. I checked my MAF or intake air sensor (whatever) and it has no resistance. So thats probly causing the lean code.
so i guess its not the puter. im going to start a new thread with my crazy speedo problem.
wait a minute. What year is ur camaro? Does it have a speedometer cable that goes from the tranny to the instrument cluster?
Any way. Here are the sheets to use as a troubleshooter.
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Old 12-30-2010, 01:15 PM   #8
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Re: what are the common symptoms of a bad ECM??

here you go
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Old 12-30-2010, 01:15 PM   #9
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Re: what are the common symptoms of a bad ECM??

last one
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Old 12-30-2010, 01:18 PM   #10
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Re: what are the common symptoms of a bad ECM??

your O2 TroubleCode
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Old 01-02-2011, 06:22 PM   #11
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Re: what are the common symptoms of a bad ECM??

thanks for the help. i found my problem. i had several intake leaks
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Old 01-02-2011, 09:48 PM   #12
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Re: what are the common symptoms of a bad ECM??

Right on man!
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Old 01-02-2011, 09:48 PM
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