I have a 2003 saab 9-5. After driving my car for about 2-3 miles my engine will shut off like its not getting gas, and not start. Once the car sits for a couple hours it will start back up and do the same thing. I recently had the fuel pump, lines and filter replaced. I also bought a new battery and had the alternator checked. My car is well maintained and runs great when it is started! Please Help I'm out of ideas! a friend said it might be my Crankshaft Position Sensor?