The next time it dies and/or will not start cycle the fuel pump a few times by turning the ignition on (but not trying to start the car) and off. This will help build fuel pressure (if that is your problem) and help to isolate what is wrong.
91 5.0 sport:
M5R2 with B&M ripper, SC seats, 3.27 t-lok rear, 5-4.5 bolt pattern, cobra brakes front and rear, 95 Mustang cobra rims, and open exhaust.
2018 Focus RS
1995 F350 ->Mint