12v battery? Run Motoscan to see if there are any codes.
As you see already in this thread, there's a number of things can cause your symptoms.Thanks for your input, i dont know how I'd test for an open tho as i image it would cool down pretty quick and close up, maybe buy another and fit to eliminate it...dont know either if you need to plug the ecu in, to tell it that the stator as been changed ???