p170 and p171 codes?
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p170 and p171 codes?
(ive got an 02 F150 4.2L)
My Check Engine light came on a few thousand miles back. i unhooked the battery but the light came back on a few thousand miles later and i started to not get quite the same gas mileage. so i went to discount auto parts and they gave me those codes. the guy told me i probably just needed to clean the sensors. i took a look and they didnt look all that dirty or rusted or anything.
so i started reading about these codes online and ive read a few things that said those codes for an OBD-II vehicle means youve got a vacuum leak, or the fuel system is clogged, etc... and that the first place you should look is to see if the PCV elbow/hose has a hole in it or if the MAF sensor is dirty. is that right? what should else should i look for? and where is the mass air flow sensor?
thanks....
My Check Engine light came on a few thousand miles back. i unhooked the battery but the light came back on a few thousand miles later and i started to not get quite the same gas mileage. so i went to discount auto parts and they gave me those codes. the guy told me i probably just needed to clean the sensors. i took a look and they didnt look all that dirty or rusted or anything.
so i started reading about these codes online and ive read a few things that said those codes for an OBD-II vehicle means youve got a vacuum leak, or the fuel system is clogged, etc... and that the first place you should look is to see if the PCV elbow/hose has a hole in it or if the MAF sensor is dirty. is that right? what should else should i look for? and where is the mass air flow sensor?
thanks....
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RSCHAP1
1997 - 2006 Expedition & Navigator
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Sep 6, 2016 04:56 AM
