I got in my 93 5.0 yesterday after work, cranked the car and I drive about 100 yds when the car just died. I tried to restart the car and nothing. You can hear the fuel pump come on and it just keeps running, where it use to come on for about 5 seconds and then shut off. Now it just keeps running and I've also noticed a whistling sound at the fuel rail. I've changed the fuel pump and the fuel pressure regulator valve and still no progress. Any thoughts??