Fuel System

Fuel System

The fuel system consists of:

- a 1-speed Mechanical Returnless Fuel System (MRFS) with sequential Multi-Port Fuel Injection (MFI).

- a standard fuel tank.

- a Fuel Tank Pressure (FTP) sensor incorporated in the fuel vapor tube assembly (part of the fuel tank assembly).

- a Fuel Pump (FP) module containing:
- an electric FP (Fuel Pump), which provides pressurized fuel to the fuel rail.

- a serviceable fuel level sender mounted on the FP (Fuel Pump) module.

- a check valve, which maintains system pressure after the FP (Fuel Pump) is shut off.

- a pressure relief valve for overpressure protection in the event of restricted fuel flow.

- a lifetime fuel filter (serviced as part of the FP (Fuel Pump) module).


- a fuel rail.

- an electronic FP (Fuel Pump) module which is enabled by the PCM to control fuel rail pressure.

- separately controlled fuel injectors for each cylinder. The fuel injectors are mounted to the intake manifold and supplied with pressurized fuel from the FP (Fuel Pump) module to the fuel rail.

- fuel, vapor and brake tubes in an integrated bundle assembly attached to the underside of the vehicle by retaining clips.

- a one-fourth turn vented type fuel tank filler cap.

- a fuel tank filler pipe which:
- has a recirculation tube.

- has a fresh air hose.

- has a restrictor plate to permit only unleaded fuel to be pumped into the tank.

- cannot be modified in any way and is serviced only by the installation of a new fuel tank filler pipe.


- an IFS (Inertia Fuel Shutoff) switch located behind the RF lower cowl trim panel.

Fuel Pump (FP) Shut-off Feature

The FP (Fuel Pump) module is controlled by the PCM. Electrical power to the FP (Fuel Pump) module is provided through the IFS (Inertia Fuel Shutoff) switch that will de-energize the fuel delivery secondary circuit in the event of a moderate to severe collision. The IFS (Inertia Fuel Shutoff) switch is a safety device, located under the RF lower cowl trim panel. Should the vehicle shut off after a collision due to this feature, restart the vehicle by first turning the ignition OFF, push the reset button on the IFS (Inertia Fuel Shutoff) switch, then turn the ignition to the ON position.