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?
have the same problem?
Friday, July 4th, 2014 AT 7:45 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.