HOW DO YOU TURN DOWN THE IDLE ON MY CAR IT IS UP...

  • Tiny
  • chiquitarivers
  • 1993 Buick Lesabre

How do you turn down the idle on my car it is up to high and I need to know how to turn it down asap. And why is the idle on high.

Tuesday, December 11th, 2012 AT 7:14 PM

5 Answers

  • Tiny
  • JDL
  • Expert
  • 16,290 posts

The idle is controlled by the pcm. Check mil codes, you can check those, yourself. Check and clean the idle air system.

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Tuesday, December 11th, 2012 AT 7:31 PM
  • Tiny
  • chiquitarivers
  • Member

How do you do that and where is it located

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Tuesday, December 11th, 2012 AT 7:38 PM
  • Tiny
  • JDL
  • Expert
  • 16,290 posts

Just to add, to check for mil codes, you use a jumper wire between the A & B terminals at the datalink connector. Turn key just till the dash lites come on, no further. Then, the mil on the dash starts flashing, you count the flashes to get the codes.

Also, Check and make sure the throttle valve is closing, as far as the idle.

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Tuesday, December 11th, 2012 AT 7:40 PM
  • Tiny
  • chiquitarivers
  • Member

Where is the idle air system located and how do I check that?

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Tuesday, December 11th, 2012 AT 7:44 PM
  • Tiny
  • JDL
  • Expert
  • 16,290 posts

Did you check for applicable mil codes? The iac valve is on the throttle-body. Clean the throttle-body. See if the iac has any gunk on it, clean it.

If nothing I'm saying makes any sense to you, then, I'm not sure how to help?

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Tuesday, December 11th, 2012 AT 8:48 PM

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