Low idle and random shutting off while driving?

Tiny
CLARKE94
  • MEMBER
  • 2003 FORD EXPLORER
  • 4.6L
  • V8
  • 4WD
  • AUTOMATIC
  • 123,000 MILES
Low idle bubbling noise and does it while driving if stop at a stop sign.
Friday, July 7th, 2023 AT 11:13 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,702 POSTS
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.

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Saturday, July 8th, 2023 AT 12:30 PM

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