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Firstly the usual process of starting my EP3 first thing in the morning goes like this; the car revs at about 2k and then gradually comes down to under 1k as the engine warms up and then I drive off...
However recently, on cold start, the car would rev at 1500 rpm initially and then about 5 minutes later it would go up to 2000rpm on its own. and as the engine warms up the revs come down slowly but they fluctuate as they come down. After about 15 minutes of waiting for it to finally settle at just under 1000rpm, it stays normal for a little while. But then after a couple of minutes of driving it starts idling a little rough, going from 800 up to 1100 and then staying still for a short period and repeating itself.
Would it be just a matter of taking the throttle body off and giving the idle control valve a good clean?
However recently, on cold start, the car would rev at 1500 rpm initially and then about 5 minutes later it would go up to 2000rpm on its own. and as the engine warms up the revs come down slowly but they fluctuate as they come down. After about 15 minutes of waiting for it to finally settle at just under 1000rpm, it stays normal for a little while. But then after a couple of minutes of driving it starts idling a little rough, going from 800 up to 1100 and then staying still for a short period and repeating itself.
Would it be just a matter of taking the throttle body off and giving the idle control valve a good clean?