Hi Everyone,

I was wondering if anyone can help me out with a problem.
I have a 1997 1.8 Petrol mondeo and it starts and runs great. but occasionally when I am at lights etc ( with the clutch in or in neutral) the engine revs on its own. The idle speed is set at at around 900 rpm but when it does this, it revs between 1000 to 2.500 / 3000 rpm. it does this for a few minutes then cuts out.

The really strange thing is that it seems to do it quicker than if I did it with the throttle pedal. Its like the responsive throttle of a bike. It doesn't do it all the time and theres no pattern to it. Its not causing problems at the moment, but I dont want regret ignoring it.

I would appreciate any ideas as the manual doesn't offer any solutions and I'm trying to avoid the garage.- Thanks