1998 Ford Mustang Won't start after loose battery cable.

Positive cable was loose, after it was replaced--car wouldn't start. It acts like the computer doesn't recognize the chip in the key. Turns over fine but nothing. Gas in tank but no fuel pressure. I can hear the fuel pump come on for a couple of seconds then stops.
Does the computer shut off the fuel if the wrong key is used....can it be reset or rebooted? Bad fuel pump or maybe a bad fuel pump?

Repair manual doesn't mention keys with chips....

Thanks