Buick 13516496 Sensor Assembly, Fuel Pressure

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After removing the intake manifold, you should disconnect the electrical connector from the sensor(s).

Raise the vehicle and support it securely on jackstands. Remove the fuel tank. Disconnect the electrical connector from the canister vent solenoid valve. Disconnect the hoses from the canister, which is located on top of the fuel tank, at the rear. Remove the retainer securing the canister on top of the fuel tank and remove the canister.

Next, relieve the fuel system pressure and wait for at least two hours before proceeding.

The fuel pump flow control module (FPFCM), also referred to as the Fuel Pump Power Control Module, is located under the model, above the spare tire.

Remove the fuel tank filler cap.

Before installing the high-pressure fuel pump, you should ensure that the camshaft lobe is at its base circle (lowest point) and lubricate the pump roller with engine oil.

Relieve the system fuel pressure to begin with the fuel pressure sensor. Raise the vehicle and place it securely on jackstands. Disconnect the electrical connector from the fuel pressure sensor. Unscrew the fuel pressure sensor from the fuel supply line. Remove and discard the old fuel pressure sensor o-ring. Coat a new o-ring with a little clean engine oil, then install it on the fuel pressure sensor. Installation is otherwise the reverse of removal. Be sure to tighten the fuel pressure sensor securely. Before lowering the vehicle, test for leaks as follows: Turn the ignition switch key to the ON position (don't start the engine) for two seconds. Turn the ignition switch key to the OFF position for ten seconds. Turn the ignition switch key to the ON position (don't start the engine). Inspect the area around the fuel pressure sensor for leaks. For the fuel pump driver module, raise the vehicle and place it securely on jackstands. Disconnect the electrical connector from the fuel pump driver module. Remove the three control module mounting bolts and remove the module from its mounting bracket. Installation is the reverse of removal.

V6 engines for 2012 and later model have the fuel pressure sensor either mounted on a hitting on the fuel tank or directly on the fuel tank with no hitting.

To remove the Fuel Pressure Sensor, start by removing the oil filler cap and engine cover fasteners. Lift the engine cover and valve cover insulator off of the valve cover and reinstall the oil filler cap. Relieve the fuel system pressure and disconnect the cable from the negative battery remote terminal. Disconnect the Fuel Pressure Sensor electrical connector and unscrew and remove the sensor from the fuel rail. Clean the threads in the fuel rail and apply a drop of oil on the new sensor threads before installing it. Remove the sensor again, apply another drop of clean engine oil on the threads, and reinstall it. Connect the sensor electrical connector and reverse the removal process. To remove the high-pressure fuel pump, start by removing the charge air cooler outlet hose. Disconnect the harness connector to the fuel rail and the harness connector from the camshaft position sensor. Unclip the wiring harness retainers and move the harness and connectors out of the way. Remove the sound insulator around the pump body. Unscrew the intermediate high-pressure line fittings between the fuel rail and fuel pump and remove the fuel line bracket bolt. Remove the wiring harness bracket mounting bolts and move the bracket out of the way. Disconnect the electrical connector from the high-pressure fuel pump and disconnect the low-pressure feed line quick-connector at the pump. Remove the low-pressure fuel feed line. Remove the high-pressure fuel pump bolts and remove the pump, gasket, and lifter follower. Lubricate the lifter follower with clean engine oil and install it into the bore in the cylinder head. Install the alignment gauge and rotate the engine until the gauge sits flush with the cylinder head. Remove the alignment gauge and, if necessary, the valve lifter follower. Lubricate the pump valve lifter follower with engine oil and insert it into the bore. Set the pump into position on the bore using a new O-ring gasket and tighten the bolts evenly. The remainder of the installation is the reverse of the removal process. Reconnect the cable to the negative battery remote terminal, start the engine, and check for fuel leaks.

After removing the engine covers, you should remove the intake manifold and the fuel pump/fuel rail insulator.

The new O-ring should be coated in clean engine oil before installation.

For installation, simply reverse the removal steps and tighten the sensor to the specified torque.

Raise the vehicle and support it securely on jackstands. Remove the fuel tank. Disconnect the electrical connector from the canister vent solenoid valve. Disconnect the hoses from the canister, which is located on top of the fuel tank, at the rear. Remove the retainer securing the canister on top of the fuel tank and remove the canister.

The first step is to relieve the system fuel pressure and raise the vehicle on jackstands.

To replace the fuel pump flow control module, you need to disconnect the electrical connector and remove the three mounting bolts before removing the module from its bracket.

Installation is the reverse of removal.

Start by disconnecting the cable from the negative battery terminal and removing the engine cover.

To remove the fuel pressure sensor from the fuel supply line, you need to unscrew it.

Disconnect the cable from the negative battery terminal and remove the engine cover. Relieve the fuel system pressure and wait at least two hours before proceeding. Remove the intake manifold and remove the foam insulator. Disconnect the electrical connector from the sensor and unscrew the sensor from the fuel rail. Installation is the reverse of removal. Tighten the sensor to the torque.

After raising the vehicle on jackstands, you should disconnect the electrical connector.

You should tighten the fuel pressure sensor securely.