A few days ago, while idling in my drive-way, the DeLorean stopped running. I was able to start it right back up again, and didn't give it a second thought.

A few hours ago, while driving away from my house, the car died, so I coasted to the side of the road. Turning the key, it would crank, and fire very quickly, but would die right away.

One interesting thing that I noticed is that if I held the key in the start position (kept turning the starter), the car would keep running. As soon as I let go, car would die. Had to have the stupid thing towed back to my house.

Please advise as to where I should start my diagnostics.