Re: 97 T-Bird P-0171-0174 codes.
Thx RTG, i pulled off the airbox cover and rechecked the K+N filter we cleaned and installed, but that was about 3 mos ago, before the codes started. I also checked the visible vacumn lines. Some seem a little brittle. Will have to investigate further. I did notice the MAF seemed unusually clean inside. Did not seem like an OEM part. Only owning the car for about 1.5 yrs hard to tell. I did notice it was a wide open design not like my 99 chevy MAF with a thin wire and a grate, is this standard for Ford products? havent owned one for so many years. Also the hard plastic line aft of the MAF from the intake tube across the top of the engine seemed a little loose as it enters the drivers side valve cover PCV hose, could that possibly throw the code? Thx.