Fuel System

Fuel System

The fuel system consists of:

- a Mechanical Returnless Fuel System (MRFS).
- a fuel rail.
- a fuel rail-mounted Schrader valve on all 3.0L engines.
- a Multi-Port Fuel Injection (MFI) system.
- an All-Wheel Drive (AWD) saddle-type or Front Wheel Drive (FWD) L-shaped fuel tank.
- fuel, vapor and brake tubes in an integrated bundle assembly attached to the underside of the vehicle by retaining clips.
- a fuel tank filler pipe assembly, which cannot be modified in any way, that also contains a restrictor plate to permit only unleaded fuel to be pumped into the tank.
- a one-fourth turn-type fuel tank filler cap.
- an Inertia Fuel Shutoff (IFS) switch.
- a Fuel Pump (FP) module containing:
- an electric FP, which provides pressurized fuel to the fuel rail.
- a fuel level sender.
- a check valve, which maintains system pressure after the FP is shut off.
- a pressure relief valve for overpressure protection in the event of restricted fuel flow.
- an in-tank fuel filter providing filtration to protect the fuel injectors from foreign material.

- an individual fuel level sensor, AWD vehicles only.

The FP is controlled by the PCM. Electrical power to the FP is provided through the IFS switch located under the right front door scuff plate.

The engines are equipped with sequential MFI.

The fuel pressure is regulated to a constant pressure by a pressure regulator.