RPM increases in idle without touching pedal

Tiny
JAMES NELSON
  • MEMBER
  • 2001 CADILLAC DEVILLE
  • V8
  • 2WD
  • AUTOMATIC
  • 101,000 MILES

also on the highway it will run over 65 MPH with
touching the pedal.
Sunday, February 6th, 2011 AT 3:44 PM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Is there a check engine light on? It could be result of faulty TPS, or possibly a vacuum leak. A not so obvious area for a vacuum leak is the plenum boot between the intake and throttle housing, this usually splits on the lower portion, and intake pressure changes can change the characteristic of the leak.
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Thursday, February 10th, 2011 AT 4:18 AM

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