check ur wire harness i had this same problem mine turned out to be a plug on the wire harness was missing

 

You said you turned the key to the on position and the fuel pump didn't prime? It's the main relay that's bad if that's the case.

 

Most likely it is the fuel pump relay like 1hgel1 said. But there could also be other issues with your engine harness wiring and the ecu.

 

Im pretty shure the wireing harness is ok, when it was in the car before the motor ran fine. Same with the ecu. I need to check the main relay. Yeah i turn the key and nothing happens and i dont hear the fuel pump prime or anything but everything else works.