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Old 11-02-2009, 07:59 AM   #3
Oldsman
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well bank 1 is your upstream O2 sensor. It could be this. But have you replaced your fuel filter? If not I would do this. It is cheap like $30.

with the rich condition it could also be a faulty O2 sensor making the motor to run rich, a bad injector, maybe cam sensor. But like I said above, change the filter if you havent.
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