engine stops while driving
on 1998 Volvo S70

starts and shuts off driving car and at stops dies

1 answer
You'll need to see what is shutting down, it will likely be the fuel system or ignition system.
I would guess it's the fuel pump, but a quick check of the fuel pressure and power to the fuel pump when it stops will reveal this, or if it's something else.
Diagnosis is needed first. Good Luck