IS IT POSSIBLE TO MANUALLY ADJUST THE IDLE W/ FUEL INJECTION

  • Tiny
  • Mishkam
  • Pontiac Grand Am

Is it possible to manually adjust the idle w/ fuel injection in a 91 Grand am?

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Friday, February 16th, 2007 AT 8:02 AM

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  • Tiny
  • mmprince3000
  • Member

Yes it is possible. However it is (almost) never a good idea. Generally the throttle plate adjusting screw is sealed. It is sealed because if the idle is high it is usually a vaccum leak and adjusting the screw will only mask the problem, and can cause more damage by causing a lean condition.

Unless you had a backfire that bent the throttle plate, I would not touch the adjusting screw. The throttle body may be clogged up from the EGR or the IAC may not be working properly.

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Friday, February 16th, 2007 AT 12:07 PM
  • Tiny
  • Mishkam
  • Member

Its actually idling just a tad low while in drive. Which is causing a vibration at low end idle.

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Friday, February 16th, 2007 AT 3:30 PM
  • Tiny
  • mmprince3000
  • Member

Then I would check the timing first. It may also be the throttle body plate is clogged up from EGR soot or the IAC passage is clogged.

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Monday, February 26th, 2007 AT 5:56 AM

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