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Re: 1995 Ford Contour code 172 EGO lean not switching
Posted to Technical Discussion Forum on 2/6/2001 8 Replies

HI Jeff, first thing I'd do if I saw this code would be to measure the output of the MAF sensor. If it can't hit 3.75 volts at snap throttle pull it out and clean the hot wires. Or you can skip the test and just pull it out and clean it carefullyLogin to read more.

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