171 & 174 codes?!?!? | Ford Explorer Forums - Serious Explorations

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171 & 174 codes?!?!?

mikeyb123

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Joined
August 10, 2011
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City, State
tulsa ok!
Year, Model & Trim Level
2001 ford explorer sport
oh, where do i start? well my check engine light came on about a month ago and i had my father take a look at my car to see if there was anything drastically wrong with it and he said it was probably an o2 sensor and nothing to worry about, so i chugged on for a month.... then about a week ago she (my explorer) started drinking gas and idling at high rpms, so i ran an ob2 on her and it came up with 171 and 174 banks 1 and 2 too lean, i read about that and said it could be a bad/dirty maf sensor.... i cleaned the maf put it back in and reset the pcm, but she's still idling rough and the codes came back up.. help me?!?!

ps. 2001 explorer (sport) 4.0 sohc:yelexp:
 












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