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Re: Oxygen sensor relationship
Posted to Technical Theory Forum on 8/3/2018 1 Reply

I am thinking the ecm is richening up the mixture to try to get the rear 02 to back up into the "good" range that the ecm would like to see.

I m just wondering if the exhaust could be turbulent enough to avoid the rear sensor at 2000 rpm.

Just weird. Login to read more.

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