Bit of a random one this, after the car is warm and turned off, come back to the car and re start it, sounds like a loud humming noise from one of the belts in the engine bay, aux, cam belt, etc.
When you rev the car the noise will stop, can only hear it on idle.
Stop the car and restart it, the noise has gone??
Doesnt do it all the time, can any one sted some light?
Car is a Zaf GSI.