[Al Skierkiewicz]

Ether,
My guy also said there is a fuel rail regulator rather than direct control of the fuel pump. Again the fuel pressure test would show if that was at fault as well. I have been told that more often than not, the pump gives up all at once. Since the engine bogs down and quits with either the pedal depressed or simply idling, we can rule out idle circuit troubles I think. Still points to fuel pressure/delivery. My guy is not a big fan of Stabil for cars BTW.
The MAS airflow still could be an issue and in some cars, you can disconnect it to get the engine running and some you can't. Be warned that there are two numbers for the same engine in that line. When you order parts you need to know that number or the VIN number to get the right parts.