Hi, i am currently experiencing the following problem on my 1997 316i: While driving sometimes, the car while pressing the accellerator does'nt accellerate and as soon as i clutch in the car switches off. It starts immediately after the car is topped. i went to two mechanics and they both say that i need to change sensors one by one to see what the actual problem is. Does anyone know if this is the correct thing to do? Thanks in advance....