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Code bank 1 and i replaced oxygen sensers, now bank 3 and running lean,

(2004 Ford F-150)
in Golden, MO on July 08, 2014
while driving,giving gas it is bogging down and missing, get's a little better and does it again. have had it in the shop with no luck, just cost a lot of money.
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Popular Answer
on July 08, 2014
Possibly very small debris in mass air flow sensor .
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