Low engine idle?

Tiny
FIXITALL
  • MEMBER
  • 2001 DODGE DURANGO
  • V8
  • 4WD
  • AUTOMATIC
  • 98,000 MILES
When I start my car (engine is cool) the idle runs high, once I press on the gas it seams to idle down but every now and again it will idle back up, for instance to and from the grocery. Only noticable when stopped at a light or first starting. It will occasionally rev up and down on its own at a stop light. Dealer cant find anything wrong?
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Sunday, March 29th, 2009 AT 7:35 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
It sound sliek the throttle bore is dirty and needs service here is a guide to help you fix the problem also lets check for vacuum leaks.

https://www.2carpros.com/articles/idle-air-control-valve-service

and

https://www.2carpros.com/articles/throttle-actuator-service

and

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Please run down these guides and report back.
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Monday, March 30th, 2009 AT 3:03 AM
Tiny
JUDY007
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  • 0 POST
I found a missing vacuum hose once I replaced it the engine runs great !
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Monday, October 5th, 2020 AT 10:47 AM

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