Can anyone please please help? We have a peugeot 407 06 with 53,000 miles, beautiful car until we started recently having problems with it. Driving along and the car jumps!!! Cant describe it any other way (it loses power big time) just for a split second and is perfect again. the engine management light comes on but when the engine is switched off and back on again the light goes out. this used to happen about 6 months ago maybe once every 1,000 miles but now its happening every 20 to 40 miles. It has been put on diagnostic machine but nothing comes up please help.