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2003 Expedition Rough Idling

Tiny
JB99
  • MEMBER
  • 2003 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 125,000 MILES
Once the car warms up, I will at a stop and the engine begins to idle roughly, sometime to the point of stalling. It seems to idle better if I put it in neutral.

It runs fine when I'm moving. I havent noticed any performance loss at speed.

Any idea what the source of this may be?
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Thursday, December 23rd, 2010 AT 10:17 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
It could need a tune up, have a vacuum leak, a weak coil. If the check engine light has come on, have the computer scanned for trouble codes. Also, check for vacuum leaks. Behind the throttle body is a vacuum hose that has a 90 degree bend in it. Check to make sure it isn't leaking. They dryrot and cause problems.
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Friday, January 21st, 2011 AT 9:48 PM

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