The fuel pump relay or fuel pump might be two things to consider for starters. Did you notice the pump buzzing louder then normal? if so, this wold be a clue.

Try jumping the fuel pump relay and see if the same thing happens. My 190E did the same on me, but it totally shut down, turned out the fuel pump relay was overheating from the current. The car would not restart for a while either. Same scenario as yours, although I don't remember 10 seconds until the engien shut down.... It would just drop to 0, but how long it took would depend on the speed of the car and rpms.

xp

__________________
1985 190E 2.3L - a constant project.