2002 Ford Explorer codes

2002 FORD EXPLORER
65,000 MILES • 6 CYL • 2WD • AUTOMATIC
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POWELLMAN1957
  • MEMBER
  • 1 POST
I have codes p171 p174 what is the problem/
Feb 12, 2009 at 12:12 PM
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JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi:
My guess is you have a vacuum leak. Explorers liked to suck air around the upper intake seals, damaged pcv hoses, vacuum tree at the back left, depending on the year, lower intake around the front or back corners, also look for cracks, loose clamps on the intake air tube inbetween the ribs.


Let me know what you find.

Joe
Feb 13, 2009 at 8:41 PM
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