Hi I am new to the forum and look forward to hearing from you all! Can anyone help. My wife's C180 Auto 1998 has developed a strange problem. It has started cutting out while driving after about 30 min or so. It is running slightly hot but not overheating. The car engine stops and when you try to start the car turns over but doesn't start. AFTER 30 min or so car regains power and starts up. AA man advised to change water pump and drive belt which we did ? But problem persists..