rev's go high

2005 FORD FOCUS
70,000 MILES • 1.6L • 4 CYL • AUTOMATIC
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JOHN O FLYNN
  • MEMBER
  • 2 POSTS
after a while of driving the rev's quickly go up then drop down again.
Aug 24, 2016 at 4:35 AM
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HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
scan for codes and check for a vacuum leak, then clean throttle plate on both sides and IAC hole with choke cleaner.
Aug 24, 2016 at 6:44 AM
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JOHN O FLYNN
  • MEMBER
  • 2 POSTS
thank for quick reply [ scan for codes ] where and what am I looking for.
Aug 24, 2016 at 7:21 AM
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HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
if you are in us go to an auto parts they can scan it. most major ones do then get back with codes. for vacuum leak check hoses cracked or off/broken etc. including grommets on engine or duct work going to engine with holes or off.
Aug 24, 2016 at 8:10 AM