Mechanics

FORD WINDSTAR SENSOR PROBLEM

2003 Ford Windstar • 182,000 miles

Changed the plugs & both o2 sensors. Still giving codes po171 & 174, it also stumbles during acceleration (bogs down). Gas filter has been changed.
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Guest
January 20, 2013.



O2 sensors are not the issue.

Low fuel pressure, vacuum leaks, mass air flow sensor or pcv valve are the reasons for these codes.

Roy

ASEMaster6371
Jan 20, 2013.