Low idle and random shutting off while driving?

2003 FORD EXPLORER
123,000 MILES • 4.6L • V8 • 4WD • AUTOMATIC
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CLARKE94
  • MEMBER
  • 1 POST
Low idle bubbling noise and does it while driving if stop at a stop sign.
Jul 7, 2023 at 11:13 PM
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STRAILER
  • ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
It sounds like the IAC valve needs to be replaced, but we should check it for vacuum leaks as well. Here is a guide to help with the vacuum leak. Please use this guide when the engine is cold only:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

and this guide may help as well:

https://www.2carpros.com/articles/stall-at-idle

If the check engine light is on, we need to run the codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Check out the images (below). Please let us know what you find.



Jul 8, 2023 at 12:30 PM
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