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Engine rev

Tiny
DASDANIEL
  • MEMBER
  • 2003 FORD FOCUS
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 121,000 MILES
2003 Ford Focus - while driveing, the engine will rev up on its own. This happens during driving, when stopped, when in neutral and even when in park. Do you suppose this is a sensor or a computer issue?
Monday, November 29th, 2010 AT 9:20 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You may have a bad IAC ( idle air control) but try cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.
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Monday, November 29th, 2010 AT 9:29 PM

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