Can you hear the fuel pump run when you first turn the key to the 'on' position? If you don't, then you still have a problem there. Check the fuel pump relay and related fuses. Fuel pressure regulator could be bad. I'd check ALL fuses anyway. If you can keep it running for more than a second or two with starting fluid, then I would say you have a fuel system problem, maybe the electrical connectors weren't plugged in well to the pump, or you have some kind of wiring problem. If you have no oil pressure, I think that the computer will shut the engine down to avoid damage. Maybe oil pressure sending unit. Can you get any trouble codes?