code bank 1 and 2.so i replaced oxygen sensers, now bank 3 and running lean, on 2004 Ford F-150

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.

Asked by for the 2004 Ford F-150
1 answer
Possibly very small debris in mass air flow sensor .