Consequences of Exhaust leaks..

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08-05-2002, 05:41 PM

Rich97Z28

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Location: Uxbridge,MA

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Consequences of Exhaust leaks..

Can someone confirm for me what I would see if logging with exhaust leaks before the heated O2 sensors?
Will the PCM pull fuel? Would this then contribute to a lean condition, thereby causing the PCM to pull timing, especially under load or WOT?
Thanks,
Rich

08-05-2002, 08:18 PM

Dr.Mudge

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Location: Bay Area, CA

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It will add fuel because the car will pull in excess air making the O2s see this air and think your lean, ergo the car will run rich compensating for this.