hi there' new to the forum and new to astras too! been having a problem with very high revs for couple of weeks now, car is idling at around 2500rpm at the moment, was at 2000rpm last week but kept getting higher! as i said, im new to astras and not brilliantly mechanically minded so im puzzled (not to mention p***ed off) at what this can be? ive replaced the air sensor and pipes yesterdy and still the same.its at the stage now were its undrivable ie if im in a cue of traffic for any longer than 10mins temp gauge shoots right up, and its very very loud! could anybody shout me some handy advice or put me on the right path to sorting this car out. am i right in saying that these models had problems with egr sensor/valve? could this be it? anyway all help appreiciated. cheers.....EDIT> just realised my car is a mk3!!! NOT mk4...oops.