Engine shuts off at low RPMs?

2001 HONDA ACCORD

173,000 MILES • 1.2L • 4 CYL • 2WD • MANUAL

ARNIE MADIS

MEMBER
1 POST

Come off freeway idle drops down and shuts off. Start it back up and it will only run if the tachometer exceeds 2,000 RPMs. If I let the car sit for a couple of hours, it starts up and runs fine for a couple days. Very frustrating and scary to drive it.

Oct 30, 2022 at 12:24 PM

STRAILER

✓Experienced Mechanic
55,267 POSTS

So, this can be a vacuum leak, or the throttle body needs to be serviced. Here are three guides that will help us fix the problem, only test the engine for vacuum leaks when the engine is cold.

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

and

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

and

https://www.2carpros.com/articles/throttle-actuator-service

Please go over this guide and report back.

Oct 31, 2022 at 3:46 AM

JIS001

✓Experienced Mechanic
3,412 POSTS

I also wanted to mention the idle air control valve can have carbon in it to cause the idle issue. I would just recommend replacing it. You can try to clean it, but you will end up having the same issue. The valve is located on the intake manifold just behind the throttle body.

As Ken L suggested earlier. Clean the throttle plate of carbon and I would also recommend replacing the idle air control valve.

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Nov 1, 2022 at 3:06 PM

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