ENGINE RUNNING ROUGH

1999 Honda Civic

Tiny

changte

July, 4, 2014 AT 7:45 PM

This Honda civic runs ok, but suddenly the idle is higher and down higher and down.
I turn the aircon on, then it is normal. Runs for a while, the idle is up and down again.
which part should cause the problem?

FOUND 4480 RELATED QUESTIONS

Running Rough

27 ANSWERS
34 IMAGES

Idles Rough/changed Ects

37 ANSWERS
3 IMAGES

1 Answer

Tiny

Jacobandnickolas

July, 4, 2014 AT 9:54 PM

Most common problem to cause this issue is the idle air control valve (IAC). The IAC is responsible for maintaining the engine idle speed.

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