p0171, p0174 have returned
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Joined: Aug 2020
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p0171, p0174 have returned
Getting codes p0171 and p0174 and a stumble to stall at idle. Cleaned IAC, new fuel filter, and replaced MAF. (Vehicle ran well with MAF unplugged so decided to replace it). Drove great for 4 hours with no codes or stumbles.
Vehicle sat for 2 days, restarted today and problem and codes have resurfaced. Did I get a crappy MAF or should I be looking somewhere else? Thanks.
Vehicle sat for 2 days, restarted today and problem and codes have resurfaced. Did I get a crappy MAF or should I be looking somewhere else? Thanks.
Fleet Owner
Joined: Aug 2010
Posts: 21,255
Likes: 1,657
From: Reynoldsburg, Ohio
Whatever device used to obtain your DTC's should have some diagnostic capability too--things like oxygen sensors, the MAF's actual performance with engine at operating temperature. Checking fuel pressure would be a good idea too but that requires a proper gauge and fitting(s) to attach it to the fuel rail.
Fleet Owner
Joined: Aug 2010
Posts: 21,255
Likes: 1,657
From: Reynoldsburg, Ohio
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