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2001 Ford F-150 IDLE LOPE IN COLD TEMP

Tiny
HAWKEYE60
  • MEMBER
  • 2001 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 177,775 MILES
T RUCK LOPES WHILE IDLING IN COLD WEATHER. CHANGED MAF SENSOR AND NEW PLUGS. HELPED BUT STILL LOPES NOT QUITE AS BAD. WHAT ELSE SHOULD I CHECK?
Friday, February 26th, 2010 AT 7:54 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Has the check engine light come on?
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Friday, February 26th, 2010 AT 12:39 PM
Tiny
HAWKEYE60
  • MEMBER
  • 2 POSTS
Yes, thats when I put new maf and plugs. There was a code of po174 and po171 from a.Z.
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Friday, February 26th, 2010 AT 2:31 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
That is a lean mixture on both banks. Have you checked for vacuum leaks?
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Friday, February 26th, 2010 AT 3:08 PM

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