I am trying to figure out a problem with a friends car. It is an E30
325i.Symptoms :
Car will start and run for a bit (10 minutes or so) and then randomly shut off. Doesn't do it every time but when it does it won't restart for a bit. When it shuts off, there is no power to the fuel pump and no spark. I have already checked the motronic relay and it is good. Also get power to the relay to operate it. As I said, once the car has sat for a bit, it will fire right back up. Any ideas???