darrenlee1981 Posted March 30, 2014 Share Posted March 30, 2014 Car has been sitting for 4 weeks. Turned it over after letting it check it was ok (non turbo) and it started first time and beautifully. Then after 20 seconds the rev needle started jumping up above 1k and then down below 1k. Never any higher than 1500 and no lower than 800. Did it for 4mins until it was warmed up and then it stopped. Never done it before. Help!! Any ideas?? Quote Link to comment Share on other sites More sharing options...
stevie_b Posted March 30, 2014 Share Posted March 30, 2014 Had you disconnected the battery? Sounds like the ECU was re-learning the idle speed. Nothing to worry about IMO unless it's accompanied by other symptoms. Quote Link to comment Share on other sites More sharing options...
skippyboyo1 Posted March 30, 2014 Share Posted March 30, 2014 Did you have the air con on? Quote Link to comment Share on other sites More sharing options...
darrenlee1981 Posted March 30, 2014 Author Share Posted March 30, 2014 No air con and no other issues. Went for a drive parked up. Came back to car and it did it again Quote Link to comment Share on other sites More sharing options...
Dazzi Posted March 30, 2014 Share Posted March 30, 2014 Idle control valve probably needs a clean. Quote Link to comment Share on other sites More sharing options...
safcdixon Posted March 30, 2014 Share Posted March 30, 2014 Idle control valve probably needs a clean. Yeah that^^^^ or a good thrash tends to sort mine oot Quote Link to comment Share on other sites More sharing options...
That_Supra_Guy Posted April 2, 2014 Share Posted April 2, 2014 +1 for the idle control valve, sorted this very issue out on mine provided the screws are'nt siezed in it'll take you 10 minutes. Quote Link to comment Share on other sites More sharing options...
darrenlee1981 Posted April 3, 2014 Author Share Posted April 3, 2014 I took it for a good hard thrash and it's been great ever since. Back to it's perfect first time starting. Must have just been because I let it sit for a month. Quote Link to comment Share on other sites More sharing options...
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