exturbo2003 0 Posted August 7, 2008 Hi long time no posts but been away and not had my c but back now anyway the c has a problem. if i start the car it revs brifly to 1700 rpm and drops to about 1200 for a few mins and the settles down to about 900 rpm then whilst idling it will suddenly go to about 3000 rpm and stay there for about 20-30 secs and drop back down, or stay there until i turn the ignition off anyone got any idea's please thanks Quote Share this post Link to post Share on other sites
dirtytorque 0 Posted August 7, 2008 what happens if you disconnect the isv connector and then start it ? Quote Share this post Link to post Share on other sites
exturbo2003 0 Posted August 8, 2008 then its fine but have tried another isv and it stll does it Quote Share this post Link to post Share on other sites
dirtytorque 0 Posted August 8, 2008 Isv is controlled by the ecu. The problem sounds ISV related to me or at least the control of. Sorry thats all I can suggest. Quote Share this post Link to post Share on other sites
exturbo2003 0 Posted August 8, 2008 yeah me too it idles then its almost like the revs drop and as it try's to compenstate it goes mega high but its not sticking, if i tap it it moves up and down a little, disconnect or switch off and its fine poxy thing Quote Share this post Link to post Share on other sites
