P0171 Code. . .need a little help - Page 2 - Ranger-Forums - The Ultimate Ford Ranger Resource

4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 05-14-2011
Join Date: Apr 2011
Location: riverside,ca
Posts: 5
The code fix was upper o2 on bank 2. I had no vacuum leaks. I wanted to know why my idle stays at 1000 until I completly stop {coasting not in gear}. 99 ranger 3.0 ff sport. 72 tahiti jet 460
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