Question about 1999 Ford Windstar
I have scanned for codes it stored a po171 a p0174 a po302...p0171 is bank 1 lean p0174 is bank 2 lean p0302 is cyl #2 misfire i cleared codes replaced plugs cked wires.test drove it reset the same codes after 3 drive cycles.i noticed that the miss happens all the time between1300 rpm-1600 rpm..it has no miss before or after that rpm range... i think there may be tsb on this issue..any help apprichiated doyal.
Check the pcv valve vacum lines for a leak a vacum leak will set 171 174 codes. lift the hood with engine running and listen for a air leak , check all vacum lines if no vacum leaks can be found then clean the mass air flow sensor by spraying carb cleaner directly on it for about 5 seconds. in other words take the air filter cover up and spray down the tube that leads to engine. shine a light down hose first and see if u can see the mass air flow sensor so u can get a direct hit
Posted on Jan 13, 2009
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Posted on Jan 02, 2017
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