High idle issue

[Arnold]

Hi all

I've searched around and read a few thread about dodgy idles but I can't quite find an answer. My car has been running fine for ages, but now when I pull up to traffic lights etc, it'll sit just under 2k revs when idle. If i blip the throttle, it'll settle down and return to normal - until I next pull up to some lights and it'll just do it again..

Any ideas what might cause this to happen? i've not removed any parts or fiddled with anything mechanical, idle sensors, throttle bodies, ecu's etc for well over a year, so I know I haven't done anything to cause it.

Cheers

[rob_bower]

Sticky throttle cable? Mine does it to occasionally I just lift the accelerator pedal withy foot.

[Arnold]

I don't think so as this happens every time I stop, but when i'm driving normally the car behaves / accelerates as normal. I imagine a sticky cable would be intermittent? I'm not sure if the idle control valve would be responsible for such behaviour, or if the throttle body has problems, just hoping someone who has fixed this might have the answer.