Pagoda

New to the site so..... Hello to everyone! I have a 94 Grand Cherokee Laredo that refuses to start. Unfortunately it left my wife stranded at school while she was picking up one of the kids. Jeep turns over but nothing after that. Obviously, either no spark or no fuel.
First started with pulling fuel line off the rail. Nothing. Just to make sure that filter wasn't clogged I went and pulled line off the filter and still don't get any fuel.
Checked fuses and relays and from what I can tell, everything checks out fine. I'm going to assume that the pump has bit the dust.
My question is: Is there a way to check if the pump works without having to pull the thing out? Maybe create a "jumper" in a harness somewhere?
Unfortunately I don't have the FSM to the jeep, just a crap Haynes version, which is virtually useless on trouble-shooting. If anyone does happen to have FSM to it, please let me know! I have other minor issues that I would love to work out while I have the tools out.
Thanks to you all.

Mirage642

Welcome to the site. I think that pulling the rail tells the story that the pump is toast.

Cherokee 4.0

Fuel Pump

REMOVAL & INSTALLATION

1984–95 Models


Fig. 1: Loosen the hose clamps and tag the fuel hoses before disconnecting them . . .

Fig. 2: . . . then detach the hoses from the fuel pump module/sending unit

Fig. 3: Disengage the fuel pump module/sending unit wiring harness connector

1. Disconnect the negative battery cable.
2. Remove the fuel tank filler cap.
3. Relieve the fuel system pressure as outlined in this section.
4. Drain the fuel from the fuel tank.
5. Raise and support the rear end on jackstands.
6. Remove the fuel inlet and outlet hoses from the sending unit. Be ready to catch any spilled fuel.
7. Disengage the sending unit wires.
   Fig. 4: The fuel pump module/sending unit retaining ring must be rotated counterclockwise for removal
   
8. Using a brass punch and hammer, remove the sending unit retaining lockring by tapping it counterclockwise.
   Fig. 5: Carefully pull the fuel pump module/sending unit out of the fuel tank — step shown with the fuel tank mounted on the vehicle
   
   Fig. 6: Remove and discard the fuel pump module O-ring gasket
   
9. Remove the sending unit, which incorporates the electric fuel pump, along with the O-ring seal from the fuel tank. Discard the O-ring.
10. Remove and discard the pump inlet filter.
11. Disengage the fuel pump terminal wires.
12. Remove the pump outlet hose and clamp.
13. Unfasten the pump top mounting bracket nut and remove the pump. To install:
14. Install a new inlet filter on the pump.
    Fig. 7: This is the proper positioning of the fuel pump module assembly inside the fuel tank
    
15. Assemble the pump and bracket. Connect the hose and wiring.
16. Install the unit and new O-ring in the tank. The rubber stopper on the end of the fuel return tube must be inserted into the cup in the fuel tank reservoir.
17. Install the lockring. Carefully tap it into place until it seats against the stop on the tank.
18. Connect the hoses.
19. Engage the wiring.
20. Lower the vehicle, fill the tank, run the engine and check for leaks.

1996–98 Models


Fig. 8: Fuel pump module location — 1996 model shown

1. Drain and remove the fuel tank as outlined in this section.
2. Using tool 6856 or its equivalent, remove the module locknut which is threaded onto the fuel tank. The module will spring up when the nut is removed.
3. Remove the module. To install:
4. Install a new gasket and place the module into the opening in the fuel tank.
5. Position a new locknut on top of the module and tighten the nut using tool 6856 or its equivalent to 40 ft. lbs. (54 Nm).
6. Install the fuel tank as outlined in this section.
   Fig. 9: Locknut removal using tool 6856 or its equivalent
   
   Fig. 10: Install a new gasket on the fuel tank opening

Pagoda

Yea, after I pulled the line off the filter and got nothing, it was pretty much a no brainer after that. Thanks for the info on removal/install by the way. Just out of curiousity, what should a new pump run $$$?

Cherokee 4.0

what motor u have

http://www.autozone.com/autozone/cat...Text=fuel+pump

Pagoda

Inline 6cyl.. Link that you sent for Autozone shows $187 for it. Got to be a better deal than that around. Will poke around the internet and see what I come up with. I'm on a limited budget to get this thing running again.