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Old 06-28-2013, 04:18 PM   #10
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Join Date: Sep 2006
Vehicle: 2002 Mustang GT
Location: El Paso, TX
Posts: 655

Originally Posted by cowman79 View Post
Wouldn't the fuel trim be derived from the o2 rreading. If all of the other fuel trims are around 0 then wouldn't the problem have something to do with that banks sensor 2.
fuel trims are calculated and adjusted from the upstream o2 sensor, not the rear.

2002 GT: 4.10s, AM CAI, UPR o/r X-Pipe, MGW STS, Flowmaster 40's, more to come
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