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