1999 Ford F150 Idle

1999 FORD F-150
127,000 MILES • 6 CYL • FWD • MANUAL
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ACALVERY18
  • MEMBER
  • 1 POST
Hi. My truck runs fine it just idles up high when i push in the clutch or when it is sitting still. I have replaced the air filter, fuel filter, spark plugs, and the throttle control sensor. It is still idling up. Can u please tell me what it is?? Thank you so much. ~Amanda~
Feb 15, 2008 at 8:14 AM
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MASTERTECHTIM
  • ✓Experienced Mechanic
  • 4,750 POSTS
you either have a big vacuum leak or your idle air control valve is no good and needs to be replaced. look at engine and listen for a hissing noise and see if any vacuum lines are broken, if ok then replace the valve. hope this helps
Feb 15, 2008 at 8:35 AM
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