Hi all,

I've had my 02 MK4 GTI for about a week now and tonight while on my way to Coles I noticed the engine was revving it self. At the first set of lights it was only revving up to about 1100rpm so I thought it was just the engine bumping up the revs to warm up the engine.

When I got back into the car (at this stage the car was warm at 90) I noticed that it began doing the same thing, but was bumping the revs even higher, the highest being about 2200rpm.

I managed to get it home fine but I did notice at the lights it kept doing it, while moving these is no issue.

I looked at some other posts and the causes could be MAF, throttle body or a boost leak. Any idea which it may be?

Thanks,
James.