MY 2003 FORD F 150 WILL NOT IDLE WHEN STOPPED ,ONCE YOU HIT THE GAS IT WILL RUN FINE UNTILL YOU STOP AGAIN. ANY IDEAS WHAT IS WRONG?

Asked by Aug 13, 2016 at 06:18 AM about the 2003 Ford F-150

Question type: Maintenance & Repair

TRITON 4.6 ENGINE, W IS THE LETTER IN VIN IM STUMPPED

2 Answers

237,255

Most probably a dirty throttle body. Carbon buildup will cause the valve to stick. Clean it out with throttle body cleaner. Check on youtube on how to do it properly. Also clean out the IAC while your at it.

1 of 1 people found this helpful.
46,215

If cleaning the throttle body doesn't help it I would suspect the IAC (Idle Air Control). Is the check engine light lit?

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