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Persistant Undiagnosable Miss

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Old 11-07-2012, 07:47 AM   #21
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Problem Solved!!

Quote:
Originally Posted by BamaToy1997 View Post
Yes, the OBD1 systems have less codes, and less data to look at. I had hoped you would have been lucky, but as suspected, the MAF did not fix the issue. As for the check engine light not coming on when you disconnected different sensors: The older systems had less strictness to the requirements to set a code. Some codes will not set unless the failure is present for 2 consecutive engine starts, and some codes do not test for actual connection of the sensor. Hopefully the new tech you are taking it to will be able to find the problem quickly.
Okay- After over a week later the tech I brought my truck to has finally found the problem- it appears that the ignitor module was failing at higher RPMs and he also mentioned that the miss was still occuring with the MAF disconnected, because the engine was running rich it masked the problem. Thank you for you support and suggestions.
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Old 05-27-2014, 08:27 PM   #22
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Been going through what sounds like the same issues you were here. Wanted to follow up and see if the problem never returned and the ICM was in fact the final fix to the problem.

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