idles high from 1500?

2005 MAZDA TRIBUTE
107,000 MILES
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PARAMEDICTN
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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 1:52 PM
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ASEMASTER6371
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the throttle body may be dirty not allowing the plate to close.

Roy
Jul 26, 2012 at 1:53 PM
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PARAMEDICTN
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I cleaned it and it is returning to the pin that stops it
Jul 26, 2012 at 1:55 PM
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PARAMEDICTN
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also if I unplug the iac it idles normal but dies when ac turned on
Jul 26, 2012 at 1:58 PM
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ASEMASTER6371
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ok, then the iac is either bad or the control for the iac has a problem.

Roy
Jul 27, 2012 at 10:42 AM
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STRAILER
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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 11:53 AM