High engine idle

2003 MAZDA TRIBUTE
130,000 MILES • 3.0L • 6 CYL • 2WD • AUTOMATIC
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BOBODREAD
  • MEMBER
  • 1 POST
When I start the car it idles high and stays that way in park, neutral and drive.
May 15, 2022 at 8:43 AM
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SQM
  • CAR REPAIR CONTRIBUTOR
  • 6,383 POSTS
Hello,

The high idle could be due to a faulty idle air control valve (IAC). Over time the IAC will collect dirt and debris and cause erratic idle.
Sometimes cleaning out the IAC can improve the idle quality.
The idle can also be impacted by vacuum leak.

Take a look at this guide:

https://www.2carpros.com/articles/engine-idles-too-high

I have attached the IAC removal process below for your reference.

Let me know what you find or if you have any questions.

Thank you.
May 15, 2022 at 1:03 PM
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