windy2007
5th Feb 2008, 19:48
300tdi P reg Engine starts idles OK pulls OK but when you reach cruising speed engine will die to below idle speed. If going gently up a gradient it will do this and being a auto will start to roll back. If you ease the accelerator back the revs come up again or increase the accelerator the revs come up again. 2 diagnostic tests said it was the petentiometer. tried one didn't cure the problem. tried a airflow meter that didn't work. replaced the injection pump that hasn't cured it. Someone said the egr valve that as already been disconnected. Help I am desperate as I can't use the vehicle like it is.