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Changed the plugs & both O2 sensors
2003 FORD WINDSTAR
Changed the plugs & both o2 sensors. Still giving codes po171 &174, it also stumbles during acceleration (bogs down). Gas filter has been changed.
Sunday, January 20th, 2013 AT 2:13 PM
O2 sensors are not the issue.
Low fuel pressure, vacuum leaks, mass air flow sensor or pcv valve are the reasons for these codes.
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Sunday, January 20th, 2013 AT 2:15 PM
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