Ameer Randolph
Replacing the fuel pump on a 2005 Nissan Pathfinder can be a tricky job. It's important to disconnect the fuel supply hose that runs to the filler cap, and to place a floor jack under the fuel tank to lower it. You'll also need to disconnect the battery and put the rear of the vehicle on jack stands. Once the tank is lowered, you can access the connectors on top of the fuel pump and disconnect the fuel lines and wiring connector. It's also crucial to remove the fuel pump supply and return hoses, as well as EVAP system hoses, and electrical connections to the pump. When installing the new pump, any reusable brackets and pick-up screens are attached, and the new pump is tested for leaks.
How to quickly replace a 2005 Nissan Pathfinder fuel pump
| Characteristics | Values |
|---|---|
| Step 1 | Disconnect the fuel supply hose that runs to the filler cap |
| Step 2 | Place a floor jack under the fuel tank |
| Step 3 | To prevent damage to the tank, put a piece of plywood between the jack and the tank |
| Step 4 | Remove the tank strap fasteners |
| Step 5 | Lower the tank enough to get at the connectors on top of the fuel pump |
| Step 6 | Disconnect the fuel lines and wiring connector |
| Step 7 | Disconnect the fuel feed hose from the moulded clip in the side of the fuel tank |
| Step 8 | Disconnect the quick connector by holding the sides, pushing in the tabs and pulling out the tube |
| Step 9 | If the connector and the tube are stuck together, push and pull several times until they start to move, then disconnect them by pulling |
| Step 10 | Lift the fuel pump upwards to remove it |
| Step 11 | Reverse the process to install the new fuel pump |
| Step 12 | Re-establish all hoses and electrical connections |
| Step 13 | Add fuel to the tank and run the engine to test for leaks |
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What You'll Learn
Disconnecting the fuel supply hose
To disconnect the fuel supply hose, you will need to place a floor jack under the fuel tank. To prevent damage to the tank, put a piece of plywood between the jack and the tank. Remove the tank strap fasteners. Lower the tank enough to get at the connectors on top of the fuel pump. Disconnect the fuel lines and wiring connector. Disconnect the fuel feed hose from the moulded clip in the side of the fuel tank. Hold the sides of the connector, push in the tabs and pull out the tube. If the connector and the tube are stuck together, push and pull several times until they start to move. Then disconnect them by pulling.
It is important to note that you should start with the tank as empty as possible. If there are more than a couple of gallons of fuel in the tank, you should siphon the fuel out before beginning. Disconnect the battery. Put the rear of the vehicle on jack stands.
In all cases, fuel pump supply and return hoses, as well as EVAP system hoses, and electrical connections to the pump must be removed. Once the pump is out, any reusable brackets and pick-up screens are attached to the new pump, then the new pump is installed.
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Removing the fuel tank
To remove the fuel tank from your 2005 Nissan Pathfinder, you will need to start by disconnecting the fuel supply hose that runs to the filler cap. Place a floor jack under the fuel tank and put a piece of plywood between the jack and the tank to prevent damage. Remove the tank strap fasteners and lower the tank enough to access the connectors on top of the fuel pump. Disconnect the fuel lines and wiring connector.
If you need to drop the tank, the job is more difficult. You will need jack stands and a floor jack to lower the tank to the ground. Start with the tank as empty as you can get it. If there are more than a couple of gallons of fuel in the tank, siphon the fuel out before beginning. Disconnect the battery. Put the rear of the vehicle on jack stands.
Once the tank is lowered, you will need to disconnect the fuel feed hose from the moulded clip in the side of the fuel tank. Hold the sides of the connector, push in the tabs and pull out the tube. If the connector and the tube are stuck together, push and pull several times until they start to move, then disconnect them by pulling.
In all cases, fuel pump supply and return hoses, as well as EVAP system hoses, and electrical connections to the pump must be removed.
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Disconnecting the fuel lines and wiring connector
To disconnect the fuel lines and wiring connector, start by disconnecting the fuel supply hose that runs to the filler cap. Place a floor jack under the fuel tank and put a piece of plywood between the jack and the tank to prevent damage. Remove the tank strap fasteners and lower the tank enough to access the connectors on top of the fuel pump. Disconnect the fuel lines and wiring connector.
Next, disconnect the fuel feed hose from the moulded clip on the side of the fuel tank. Disconnect the quick connector by holding the sides, pushing in the tabs, and pulling out the tube. If the connector and tube are stuck together, push and pull several times until they start to move, then disconnect them by pulling.
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Installing the new fuel pump
Once the pump is out, any reusable brackets and pick-up screens are attached to the new pump, then the new pump is installed. If the fuel system uses an in-line external filter, this is often replaced. All hoses and electrical connections are then re-established. Fuel is added to the tank and the engine is run to test for leaks. It is usually still safe to drive, but the pump may lead to an overheated engine and catalytic converter.
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Testing for leaks
Once the new pump is installed, the fuel system is refuelled and the engine is run to test for leaks. Before this, the fuel supply hose that runs to the filler cap should be disconnected, and the fuel tank should be lowered to the ground using a floor jack. To prevent damage to the tank, put a piece of plywood between the jack and the tank.
The fuel lines and wiring connector should also be disconnected. Once the pump is out, any reusable brackets and pick-up screens are attached to the new pump. Then, the fuel supply and return hoses, as well as EVAP system hoses, and electrical connections to the pump must be re-established.
It is usually still safe to drive after replacing the fuel pump, but the pump may lead to an overheated engine and catalytic converter.
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Frequently asked questions
Disconnect the fuel supply hose that runs to the filler cap. Place a floor jack under the fuel tank and put a piece of plywood between the jack and the tank to prevent damage.
Hold the sides of the connector, push in the tabs and pull out the tube. If the connector and the tube are stuck together, push and pull several times until they start to move. Then disconnect them by pulling.
Any reusable brackets and pick up screens are attached to the new pump, then the new pump is installed. If the fuel system uses an in-line external filter, a filter is often replaced. All hoses and electrical connections are re-established.
