Mondeo 2.0 Tdci Auto Throttle Sticking Problem

[selektre]

Hi, I recently bought a 52 plate Mondeo Estate tdci automatic ghia x. It is a beautifull condition car with only 78,000 miles on the clock. But every now and then (prob once a fortnight), whilst driving it will sudenly start to accelerate on its own getting slowly higher untill you have to pull over and turn the ignition off. It is just about tollerable when driving on small roads but it has happened recently on the motorway and i had to pull over on the hard shoulder and kill the ignition. It has got to a point where it is now just damned dangerous! I would really like to repair this fault with my local mechanic rather than taking it to my local ford dealer. If anyone has had any similar problems with the same model mondeo as i have then any tips would be most appreciated. Thanks.