Replacing The Fuel Pump In Your 2004 Lincoln Ls

Changing the fuel pump on a 2004 Lincoln LS is a complex process. Before starting, it is important to familiarise yourself with safety procedures and drain the fuel tank. The rear seat cushion and any insulation padding covering the access covers must be removed. Then, the tank must be supported and the straps loosened to access the pump. After removing the access covers, the internal fuel crossover tubes and quick-release fittings must be disconnected, and the remaining fuel drained from the delivery module. Non-conductive material should be attached to the crossover tubes before removing the fuel pump module and gasket. The new fuel pump module and gasket can then be installed, and the non-conductive material used to pull the crossover tubes through the gas tank. Finally, the rear seat and insulation padding can be reinstalled, and the fuel tank support strap bolts tightened.

Remove rear seat cushion and insulation padding

To remove the rear seat cushion and insulation padding of your 2004 Lincoln LS, you will need to first gather the necessary tools and materials. These include a new fuel pump, a non-conductive material, and tool 310-069. You may also want to wear protective gear such as gloves and eye protection.

Begin by opening the rear driver-side door and locating the rear seat bottom cushion. You will need to remove this cushion to access the fuel pump. There may be retaining clips or bolts holding the cushion in place, so have the appropriate tools on hand to remove them. Once the cushion is removed, you should see a cover plate; remove this as well.

Under the cover plate, you will find the insulation padding. Carefully remove this padding, as it may be held in place with adhesive or other fasteners. Be sure to set the cushion and padding aside in a safe place, as you will need to reinstall them later. With the insulation padding removed, you should now have access to the fuel pump and can proceed with the rest of the replacement procedure.

When reinstalling the rear seat cushion and insulation padding, be sure to follow the correct procedure. First, install the fuel pump module and crossover tubes, then connect the fuel pump module and fuel transfer pump electrical connectors. Next, install the access covers, and finally, reinstall the rear seat bottom and any insulation padding covering the access covers. This will ensure that your Lincoln LS's interior is properly secured and insulated.

Drain the fuel tank

To drain the fuel tank of a 2004 Lincoln LS, follow these steps:

First, before servicing the vehicle, familiarise yourself with safety procedures. Remove the rear seat cushion and any insulation padding covering the access covers. Support the tank and loosen the straps to gain access to the pump. Remove the access covers. Note the routing of the internal fuel crossover tubes and hoses at this time, as incorrect routing can critically impact the correct fuel system operation.

Next, partially raise the fuel transfer pump and disconnect the internal fuel crossover tube quick-release fittings. Disconnect the fuel pump module tube quick-release fitting from the fuel pump module and position it aside. It is important to caution that you drain the remaining fuel from the delivery module into the fuel tank before removal.

Attach a non-conductive material to the crossover tubes before removal. Then, remove the fuel pump module and crossover tubes as an assembly, using the non-conductive material to pull the crossover lines through the gas tank.

Support the tank and loosen straps to access the pump

To support the tank, you will need to jack up the car and place jack stands under the frame rails. You can then place a jack under the tank and remove the tank support straps. This will allow you to lower the tank and access the fuel pump.

Loosening the straps will require a socket wrench. You should loosen the tank support strap bolts to 26 ft. lbs. (35 Nm). This will allow you to lower the tank and access the fuel pump for removal.

Before beginning this process, it is important to familiarise yourself with safety procedures and to drain the fuel tank.

Disconnect internal fuel crossover tube quick-release fittings

To disconnect the internal fuel crossover tube quick-release fittings of a 2004 Lincoln LS, you will need to follow these steps:

Firstly, before servicing the vehicle, familiarise yourself with the safety procedures. Remove the rear seat cushion and any insulation padding that is covering the access covers. Next, drain the fuel tank. Support the tank and loosen the straps to gain access to the pump. Remove the access covers.

Now, partially raise the fuel transfer pump. It is important to note that the routing of the internal fuel crossover tubes is critical to the correct fuel system operation, so be sure to take note of the routing of the internal fuel crossover hoses at this time.

You can now disconnect the internal fuel crossover tube quick-release fittings.

To finish, before removing the fuel pump module, attach a non-conductive material to the crossover tubes. Then, remove the fuel pump module and crossover tubes as an assembly, using the non-conductive material to pull the crossover lines through the gas tank.

Disconnect the fuel pump module tube quick-release fitting

To disconnect the fuel pump module tube quick-release fitting from the fuel pump module of a 2004 Lincoln LS, you will need to follow these steps:

Firstly, before servicing the vehicle, familiarise yourself with safety procedures. Remove the rear seat cushion and any insulation padding covering the access covers. Next, drain the fuel tank. Support the tank and loosen the straps to gain access to the pump. Remove the access covers.

Now, partially raise the fuel transfer pump and disconnect the internal fuel crossover tube quick-release fittings. Before disconnecting the fuel pump module tube quick-release fitting, it is important to note that you should drain the remaining fuel from the delivery module into the fuel tank.

Once you have drained the remaining fuel, you can disconnect the fuel pump module tube quick-release fitting from the fuel pump module and position it aside.

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