The engine is running, but even the accelaration pedal is pressed, car is not moving forward, after few seconds the engine stall(completely shut down by it self), after few seconds i can start the engine again and car can move again, this repeatedly happened, if you can tell me what's going on with it, i appreciate it very much, as bringin the car to the garage without knowing what's wrong with it could cost me quite a lot. Thanks in advance.