idles high from 1500?

2005 MAZDA TRIBUTE
107,000 MILES
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PARAMEDICTN
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  • 3 POSTS
The tribute is idling high varies from 1500 to as much as 3500 when warm. The problem was intermitent but now is becoming more frequent. I got a TPS code and replaced it. I then thought it was the IAC but replaced it with no change. I have checked for leaks and can't find any.
Jul 26, 2012 at 6:52 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
the throttle body may be dirty not allowing the plate to close.

Roy
Jul 26, 2012 at 6:53 AM
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PARAMEDICTN
  • MEMBER
  • 3 POSTS
I cleaned it and it is returning to the pin that stops it
Jul 26, 2012 at 6:55 AM
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PARAMEDICTN
  • MEMBER
  • 3 POSTS
also if I unplug the iac it idles normal but dies when ac turned on
Jul 26, 2012 at 6:58 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
ok, then the iac is either bad or the control for the iac has a problem.

Roy
Jul 27, 2012 at 3:42 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,588 POSTS
Most of the time it is the IAC valve, here is the location so you can swap it out. Check out the images (below). Please let us know what happens.
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Jun 2, 2025 at 4:53 AM
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