WHY DOES MY RMPS IDLE UNDER 700 RMPS WHEN I ...

  • Tiny
  • Anonymous
  • 1996 Lexus ES 300
  • 211,630 miles

Why does my rmps Idle under 700 rmps when I first start my car but when my car warms up the rmps go up to the normal idle rmps. My car use to idle at 1200 rmps when I first started my car and when it warms up the idle comes down like it is supposed to do.

Tuesday, November 20th, 2012 AT 11:33 PM

1 Answer

  • Tiny
  • KHLow2008
  • Expert
  • 41,976 posts

The cold start system is not operating correctly and most likely the IAC is stuck. Try cleaning the throttle body and IAC to see if it helps.

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Wednesday, November 21st, 2012 AT 10:59 AM

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