Rough idle and stalls when in gear on at a stop light?

2003 HONDA ACCORD
115,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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HIZZAY4LIFE
  • MEMBER
  • 1 POST
Good evening, sir, my car stalls at every stop and also idles very rough. please I need your help on what to do. thanks
Feb 1, 2023 at 11:22 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

The most common issue that causes a rough idle and stalling is an engine vacuum leak. If you haven't already checked, that is where I would start.

Here is a link that explains how it's done:

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

If you find no leaks, the next thing is the idle air control valve (IAC). The IAC is responsible for maintaining the engine idle speed. It can become dirty and or damaged. That is what I would check next.

Here is a link that explains how to service one:

https://www.2carpros.com/articles/idle-air-control-valve-service

If you look below, I attached a link that covers in more detail what I discussed. Take a look through it and let me know if it helps.

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

Let me know what you find. Also, let me know if the check engine light is on and if you know of any codes stored.

Take care,

Joe

Feb 1, 2023 at 7:30 PM
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