Is there a relay switch for the fuel pump

there is a relay that controls the fuel pump , o2 sensors, fuel injectors, cam and crank sensor, it is located behind the ac/ heating unit in the dash you will have to take out the radio and heating unit it will be bolted to your right side looking at the unit, i had same problem car would shut off after starting for 2 seconds, i have traced it back to being either that relay or the ignition switch check your voltage at the igntion switch and at the relay , it is not a normal looking relay either it looks like a box with wires coming out that you can disconnect, dont try to unbolt it from the top of it , you will strip the bolts

Check ALL fuses (under hood and under dash).Did you have power before you changed the pump?

Check your work again