1989 ford crown vic 5.0 v8 engine turning over over but not starting?

Could be an electronic fuel pump failure. It is mounted inside the fuel tank. You have to drop the fuel tank to get to it. A: before you drop the tank check to see if the inertia relay was tripped , in my 88 crown it was located on trunk lid support on drivers side . looked like a little box with a metal slider sticking out one side (yours might vary) if you find this and still no help then see above