Toyota 23221-50100 Fuel Pump

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First of all, in 2003 and 2004 V8 Models, remove the fuel tank, detach the vapor pressure sensor, and disconnect the Fuel Level Sensor electrical connector. Then, release the lock tab to slide off the sending unit from the pump sub-tank. Use four screwdrivers to disengage the snap claws. Disconnect the fuel pump's electrical connector, release snap claws securing the pump to the filter assembly, and remove the pump. Inspect and remove the fuel pump outlet O-ring along with the spacer. Pry off the retaining clip and remove the pump inlet filter. The reassembly process is the reverse of disassembly. In 2005 and later V8 models, remove the fuel tank, the fuel gauge sending electrical connector, and remove the fuel gauge sending unit. Disconnect the fuel pump electrical connector, detach the suction filter hose, and separate tubes from the clamps on the suction plate. Disengage snap-claws securing the lower suction plate, and separate the suction plates and the fuel filter. Disengage snap-claws, remove the fuel pump and pump inlet filter, disconnect the fuel pump electrical connector, remove the O-ring, and inspect it. Using a screwdriver, remove E-rings, the lower suction plate, and springs from the upper suction plate. Install suction plates, along with a fuel filter. The reassembly is the reverse of removal.

You should check the battery and fuel lines for leaks.

The quick-connect fittings for the fuel supply and return lines need to be disconnected.