Originally Posted by
Martsford
The car was travelling at no more than 5 mph when the revs jumped and climbed up , 3000-4000-5000 quite alarming when your coming to a stop at a junction.
Ahh right OK didn't mention that thought it was coasting.
Next things to check would be the PCV valve and associated pipework and also I would think the throttle body, TPS and throttle cable in case the throttle got stuck open.