Rob_GTi Posted June 27, 2005 Share Posted June 27, 2005 When i start my car and leave it ticking over u can hear that the revs slightly drop then go higher then drop and go higher. anyone experienced this or know what it could be? Link to comment Share on other sites More sharing options...
Devboy Posted June 27, 2005 Share Posted June 27, 2005 ICV, take it of and clean it. It could also be your pipes! check all the breathers for the pistons if one has a hole in the ecu will be compensating for the cyclinder that isnt running and it over and under corrects its self. Link to comment Share on other sites More sharing options...
Mk6 Si Ross Posted June 27, 2005 Share Posted June 27, 2005 sounds like the good old ICV Idle Control Valve Link to comment Share on other sites More sharing options...
Trig Posted June 29, 2005 Share Posted June 29, 2005 mine does the same sort of thing, only occasionally though, is it likely to be the ICV? Link to comment Share on other sites More sharing options...
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