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    my expedition some time runs vary bad

    ok I have a 2006 expedition with the 5.4l 3v. and it is throwing all kinds of codes. but the most one is system to lean banks 1 and 2. also random misfire. most of the time it runs like crap. but when I unhook the battery and the pcm resets it will run good until I touch the gas pedal. and...
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