WHATS CAUSING HIGH IDLE?

  • Tiny
  • gmanw2k6
  • 1995 Toyota Corolla
  • 11,300 miles

I have a 1995 toyota corolla and it has a very high idle when starting I have replace the idle valve and the tps sensor I even had my "service engine" light check but it doesnt say anything about it what else am I missing?

Tuesday, September 4th, 2012 AT 8:20 PM

9 Answers

  • Tiny
  • KHLow2008
  • Expert
  • 41,939 posts

It is equipped with a cold start to increase the idling speed when engine is cold. How high is the starting idle speed and after warming up, what is the idling speed?

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Tuesday, September 4th, 2012 AT 8:24 PM
  • Tiny
  • gmanw2k6
  • Member

Its pretty high even after its warms up but it clams down after im in gear

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Tuesday, September 4th, 2012 AT 10:08 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,939 posts

Either there is a vacuum leak after the throttle body or the IAC is not working correctly. It could be stuck open more than it should and how high is pretty high?

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Wednesday, September 5th, 2012 AT 12:03 PM
  • Tiny
  • gmanw2k6
  • Member

Really high ive had it measured; it reads ova 2000 hpm but when its in gear it read inbetween 900 to 1000 hpm

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Thursday, September 13th, 2012 AT 3:25 AM
  • Tiny
  • KHLow2008
  • Expert
  • 41,939 posts

You need to have the IAC inspected if there are no vacuum leakages. Did you check the PCV?

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Thursday, September 13th, 2012 AT 7:18 AM
  • Tiny
  • gmanw2k6
  • Member

Pcv valve has been replace

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Thursday, September 13th, 2012 AT 6:38 PM
  • Tiny
  • KHLow2008
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  • 41,939 posts

Have you checked the IAC?

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Thursday, September 13th, 2012 AT 6:53 PM
  • Tiny
  • gmanw2k6
  • Member

No havent had it check

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Thursday, September 13th, 2012 AT 7:08 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,939 posts

Do so. That is the main component for controlling idling speed.

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Thursday, September 13th, 2012 AT 7:19 PM

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