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International Automotive Technicians Network
Re: 99 Ford Windstar, 3.8 P0171 & P0174
Posted to Technical Discussion Forum on 12/16/2006

now I may have missed something in your post or the responses but I'd be checking 2 things. First off is the MAF sensor. You said it was replaced. Was that new, rebuilt, OEM, or what? Does substitution of the MAF change the readings at all?

Second; you menti... Login to read more.