Replacing Fuel Pump In '94 Toyota Pickup: Step-By-Step Guide

If you're experiencing issues with your 1994 Toyota Pickup, you may need to replace the fuel pump. This can be done with moderate difficulty and the right tools. Before you begin, check if your model has an access panel under the rear seat, as this will make the job much easier. You'll need a six-point 10mm socket, metric line wrenches, a flat-blade screwdriver, a fuel pump sending unit bracket, and a grinder or Dremel-type tool if your vehicle doesn't have an access panel. First, unhook the fuel pump assembly and disconnect the hoses, clamps, fuel line, and electrical connector. Then, carefully lift out the old pump assembly and replace it with the new one, testing it by hooking it up to your battery momentarily. Finally, install the new pump assembly, hook up the fuel line and electrical connector, and start your truck to check for leaks.

Check for an access panel

To check for an access panel on your 1984-1995 Toyota 4Runner, first remove the bottom cushion on the passenger side of the rear seat. If your vehicle has an access panel, you will find it here. This will make the job of replacing your fuel pump much easier. If your vehicle does not have an access panel, you will either have to drop the tank or cut your own access panel.

If you do have an access panel, you will need to remove it to access the fuel pump. There are several items to disconnect. First, clean the top of the pump assembly and wire brush the screws, then spray them with penetrating fluid. Number 1 and 2 are hoses and clamps that must be removed (some models only have one hose). Number 3 is the fuel line that goes to the engine. If you have not already done so, remove the fuel pump fuse and start the vehicle to relieve the pressure in the system. Cover the line that goes to the front, so nothing gets in it. Number 4 is the connector for the wires that needs to be unplugged.

Keep the opening to the gas tank covered so no debris falls in. Clean the electrical connector for a good connection.

Unhook the fuel pump assembly

To unhook the fuel pump assembly of your 1994 Toyota Pickup, you will first need to access the pump. This may be as simple as opening an access panel under the rear seat on the passenger side. If your vehicle does not have an access panel, you will need to either drop the tank or cut your own access panel.

Once you have located the fuel pump, there are several items to disconnect. First, clean the top of the pump assembly and wire brush the screws, then spray them with penetrating fluid. Next, remove the hoses and clamps (some models only have one hose). Then, remove the fuel line that goes to the engine. Be sure to remove the fuel pump fuse and start the vehicle to relieve the pressure in the system. Cover the fuel line to the front to ensure that nothing gets into it.

The next step is to disconnect the connector for the wires. Be sure to clean the electrical connector for a good connection. Finally, you will need to remove the seven screws that hold the pump to the tank. Be very careful not to twist these screws off, as they all need to come out. A 6-point socket will grab the bolt better than a typical 12-point socket.

Remove the fuel pump assembly

To remove the fuel pump assembly from a 1984-1995 Toyota 4Runner, you'll first need to check if your model has an access panel under the rear seat. To do this, remove the bottom cushion on the passenger side and look for the access panel. If your vehicle does not have the access panel, you will need to either drop the tank or cut your own access panel.

Once you have gained access to the fuel pump, you will need to disconnect several items. Start by cleaning the top of the pump assembly and wire brushing the screws, then spray them with penetrating fluid. Next, remove the hoses and clamps (some models only have one hose). Then, remove the fuel line that goes to the engine. Be sure to remove the fuel pump fuse and start the vehicle to relieve the pressure in the system. Cover the fuel line to the front to avoid anything getting inside.

Now, disconnect the connector for the wires. Be very careful when removing the seven screws that hold the pump to the tank, as they all need to come out without being twisted off. A 6-point socket will grab the bolt better than a typical 12-point socket. Keep the opening to the gas tank covered to prevent debris from falling in.

Finally, gently lift the old pump assembly out of the tank and set it on your workbench, ready for the replacement pump.

Replace the fuel pump

Step 1: Check for an access panel

Check for an access panel by removing the bottom cushion on the passenger side and looking for it. If your vehicle does not have the access panel, you will either need to drop the tank or cut your own access panel.

Step 2: Unhook the fuel pump assembly

Once you have gained access to the fuel pump, there are several items to disconnect. Clean the top of the pump assembly with a wire brush and spray them with penetrating fluid. Remove the hoses and clamps (some models only have one hose), and the fuel line that goes to the engine. Remove the fuel pump fuse and start the vehicle to relieve the pressure in the system. Using the appropriate size line wrench, hold the fitting that goes to the fuel pump and turn the nut on the line to the front. Cover the line that goes to the front so nothing gets in it. Unplug the connector for the wires.

Step 3: Remove the fuel pump assembly

Gently lift the old pump assembly out of the tank.

Step 4: Replace the fuel pump

The fuel pump is attached to the fuel pump sending unit bracket. Since the bracket has the fuel line fitting and the wiring, you will likely have to replace it. If yours is good, you can reuse it.

Step 5: Install the pump assembly

Place the fuel pump assembly into the tank just as you took it out. If your kit did not have a new gasket for the assembly to the tank, be sure to get one. Start the mounting screws and then tighten them down in a cross pattern. Hook up the fuel line and tighten securely. Then hook up any other hoses and the electrical connector.

Step 6: Replace the access panel

Replace the access panel, ensuring it is sealed well.

Install the pump assembly

To install the pump assembly, place the fuel pump assembly into the tank in the same way that you took it out. If your kit did not include a new gasket for the assembly to the tank, be sure to get one; it is cheap insurance to ensure there are no leaks.

Carefully start the mounting screws to be sure that they start correctly. Once they are all started, tighten them all down in a cross pattern. There is no need to over-tighten them. Now, hook up the fuel line with your line wrenches and tighten it securely. Then, hook up any other hoses and the electrical connector. Start your truck and check for any leaks. Repair any leaks immediately.

Frequently asked questions