What would make the car idle high?

Tiny
DRIBBLER1
  • MEMBER
  • 2000 CHEVROLET MALIBU
  • 100,000 MILES
It idles at 2000 rpms or more and when you turn on the air it goes up to 4000 rpms. It also has fast acceleration also
Monday, August 29th, 2011 AT 8:04 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
I'd be suspicious of a vacuum leak. When the engine is still cold and running, use a spray bottle to spray water over the intake manifold gaskets and vacuum hoses. Watch for places the water gets sucked in or that makes the engine slow down.
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Monday, August 29th, 2011 AT 8:50 PM

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