Well about 4 weeks ago i bought a 93 GC with a 4.0 in it for 200$ off a friend who just got another jeep. This jeep ran fine when he had it but hasnt been started since the summer. So i put some gas in it and it start right up for me. I then drove it home and it drove fine. Parked it in my yard and havent touched it since then. I goto start it today and nothing. just keeps cranking. I put a new battery in it, it looks like it has a new coil in it, i put a new rotor and cap in it today, new plug wires. Im gonna put plugs in it tommarow and a fuel filter. But i still dont know why it started then and wont start now, espcially since i havent touched it since then. I turn the Key on and i cant hear the humming....and i poked the valve on the fuel rail and no fuel came out. So im thinking my fuel pump is done. Im gonna see if the pumps getting power tommmarow then im gponna , put 12v manually to the pump and see if it goes on. Anything else i should check? 1 more question is i have a 1992 Cherokee with a 4.0 , can i put that fuel pump into my Grand Cherokee ? or its not the same?