Mopar 5142345AA Regulator-Fuel Pressure

You can Select Your Vehicle to check if 5142345AA fits your vehicle.

All wheel drive (AWD) models have a saddle fuel tank configuration and have main and auxiliary fuel pumps. Each fuel pump has a sending unit. The auxiliary fuel pump contains the fuel pump reservoir, fuel pressure regulator and fuel filter. Relieve the fuel system pressure. Disconnect the negative battery cable from the remote ground terminal or battery. Remove the rear seat cushion and fuel pump module cover. On AWD models, remove main and auxiliary fuel pump module covers. Disconnect the fuel delivery line quick-connect fitting and on 2015 and later models, also disconnect the fuel vapor line from the fuel pump/fuel pressure regulator/Fuel Level Sensor assembly. Disconnect the electrical connector from the fuel pump/fuel pressure regulator/Fuel Level Sensor assembly. Before removing the fuel pump/fuel pressure regulator/Fuel Level Sensor assembly, make alignment marks on the assembly and the fuel tank (if marks don't already exist), to ensure the assembly will be correctly realigned when it's installed again. Using adjustable-joint pliers, loosen the lock ring that secures the fuel pump/fuel pressure regulator/Fuel Level Sensor assembly. Carefully lift the fuel pump/fuel pressure regulator/Fuel Level Sensor assembly from the fuel tank. Angle the module so that you don't bend the float arm of the Fuel Level Sensor or damage the fuel pump inlet strainer. If you're removing the auxiliary pump on an AWD model, raise the fuel pump module and disconnect the internal fuel line. While the pump is removed, inspect the pump inlet strainer. Make sure that it's not clogged or damaged. If the inlet strainer is dirty, try washing it in clean solvent. If it's still clogged, replace it. Installation is the reverse of removal. Line up the marks, and tighten the fuel pump module lock ring securely.

If replacing the regulator, use new O-rings during installation. If reusing the old regulator, replace the upper and lower O-rings with new ones. Do not install a new or used regulator with old O-rings. Coat the new O-rings with clean gasoline during installation.

To replace the left fuel level sensor and fuel pump module, start by removing the module. Carefully cut the wiring harness clip and disengage the fuel level sensor wires from the clip. Then, loosen the two retaining clips and pull the fuel level sensor out of the fuel pump module. You can replace either the fuel level sensor unit or the fuel pump module. After installation, turn the ignition switch to On to activate the fuel pump and build up fuel pressure in the fuel lines. For the right fuel level sensor, fuel pressure regulator, and fuel filter module, begin by removing the module. Detach the fuel level sensor from the fuel filter module by spreading the four locking tangs and pulling off the sensor. Cut the two wire ties that secure the wiring to the fuel return lines and disconnect the ground wires from the fuel filter module. Remove the fuel level sensor. If you're only replacing the fuel pressure regulator, you can stop here. To remove the fuel pressure regulator from the fuel filter module, pry off the retaining clip. Inspect the condition of the fuel pressure regulator O-rings. If you're replacing the fuel filter module, remove the ground ring from the recess for the fuel pressure regulator. When installing the ground ring in the new fuel filter module, ensure that the ground ring terminal is seated correctly in the notch. After installation, turn the ignition switch to On to activate the fuel pump and check for fuel leakage.

Reinstall the assembly and tighten the locknut securely.

The fuel pressure regulator is located on the bottom side of the upper section of the fuel pump module.