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High Idle

Tiny
KIM LESPADE
  • MEMBER
  • 1988 PLYMOUTH SUNDANCE
  • 4 CYL
  • AUTOMATIC
  • 65,000 MILES
My throttle will not go at a slower speed it is set really high. How do I lower it?
Tuesday, October 17th, 2017 AT 3:32 PM

2 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
First check for a vacuum leak, this can cause the engine speed to race. Clean throttle body and post back how this affects the engine speed for further assistance.
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Tuesday, October 17th, 2017 AT 5:18 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Here is a guide that can help out as well.

https://www.2carpros.com/articles/engine-idles-too-high

Please let us know what happens.

Cheers, Ken
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Wednesday, November 1st, 2017 AT 6:39 PM

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