I have a 2005 Volvo S40. I was driving and it just

[buntz]

turned off. Volvo found nothing wrong. Anyone have ideas their computers found no error codes and I had plenty of gas.It started up as soon as I turned the key off and on again. Volvo claims they have no reason to believe it will happen again. But they don't know why it happened the first time.

[the_law_man81]

I had an 85 shelby charger that would do that ,it would run fine for awhile and then shut off . Nobody could figure out what it was for the longest time. Finaly they discovered it was the fuel pump. Whene the fuel pump got hot it would shut off, after it cooled down it would work fine untill it heated up again.