Acura 17040-S3M-A00 Fuel Pump Set

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Disconnect the negative battery terminal and relieve fuel pressure. Remove the back seat cushion and fuel pump access cover. Unplug the fuel pump's electrical connector and detach fuel lines. Remove the fuel pump assembly and disconnect its electrical connector. Use pliers to remove hose clamps and the fuel inlet filter. Separate the pump from its bracket. Disconnect the electrical connector from the fuel level sensor/fuel gauge unit and set the supply line aside. Remove the unit locknut and the unit from the tank. Install a new gasket, align the index mark, and tighten the locknut. Reverse the process for installation.

Depressurize the fuel system and disconnect the battery. Remove the fuel pump and fuel level sensor from the tank. Disconnect the fuel level sensor and separate it from the pump bracket. Detach the sensor from the filter housing and remove the case. Disconnect the fuel supply line and discard the 0-ring. Disconnect the pump wiring and ground wire. Remove the pressure regulator housing, ground wire, retaining clip, and 0-rings. Inspect the spacer and filter screen. Remove the fuel pump and discard the 0-ring. Remove the suction filter and clean the strainer. Reassemble the pump, filter, and fuel level sensor with new 0-rings and retainer clip. Reconnect the battery, start the engine, and check for leaks.

To inspect fuel levels and pump operation, turn the ignition ON and listen for a noise. If inaudible, listen at the fuel filler neck with an assistant. For 2003 and earlier models, use a fuel pressure gauge with 48 psi for 1999-2000 models, and 55 psi for later models. Detach the fuel rail's pulsation damper, link your fuel pressure testing kit, and attach the gauge. Then, start the engine, warm it up, and then look over the fuel pressure against the range with the vacuum hose connected and disconnected and if the pressure doesn't change with hose manipulation, check for hose or regulator faults.