High idle from cold start

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alan murphy
Posts: 19
Joined: Mon Mar 22, 2010 8:38 pm
Currently Drives:: renault megane dynamique
Location: Ireland

High idle from cold start

Postby alan murphy » Wed Mar 31, 2010 6:29 pm

Drive a 2000 reg megane classic 1.4 petrol, when I start it in the mornings it idles high +2000revs, over a 10min period it erratically, eventually returns to normal idle speed, this happens every morning or if it has been parked up for more than a couple of hours. I've changed the idle air control valve (think it's also called a stepper motor but could be wrong) and the air coolant temperature sensor, this has made no improvement at all.I don't think it's an air leak as it's only on a cold engine start that the problem is there. If anybody has any idea where to go from here, I'd appreciate it, thanks

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