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Old 03-06-2002, 08:24 AM
Posts: n/a
O2 sensor should not go bad in40K miles, so there may be some other problem as well. Logically, it should be the precat sensor, since that's the one that controls the fuel mixture. But I would spend the $65 diagnostic charge to make sure something else is not at fault - I know, its not fair, but what do you do!
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