Hello guys. My Honda Civic is holding on to its revs too long (I have a manual gearbox). Turn the engine on, stick it into neutral, press the accelerator pedal a bit and revs too much. Funny thing is, the problem comes and goes but seems worse when there's been a heavy downpour of rain. Also, when you press the clutch in, that makes the engine rev too. Weird.
Don't want to get ripped off by Kwik-Fit, so can anyone help?
The first thing I'd try is to give the idle control valve a good clean. I've only ever worked on Fords, so I'm not sure exactly where it will be on a Honda, but it'll probably be attached to the intake manifold.