1996 Ford Explorer help

When you turn the key to on, do you hear the fuel pump in the gas tank run for 2-3 seconds? If not you'll need to check the relay under the hood. The inertia switch, this cut fuel in an accident, but can be tripped or defective, and is located on the passenger side kickpanel, remove the trim panel and try holding the button down. Last, it can be a bad wire to the pump, or ignition switch, some activate the injectors when in the crank position, this is why you need to see if the pump runs!