Fuel System - General Information

FUEL SYSTEM

WARNING:
- Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.
- Do not carry personal electronic devices such as cell phones, pagers or audio equipment of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions may result in serious personal injury.

The fuel system consists of the:
- fuel tank.
- fuel tank filler pipe.
- fuel tank filler cap.
- fuel pump (FP) module.
- fuel level sensor assembly (saddle-tank only).
- fuel level sender (mounted on the FP and, if equipped, the fuel level sensor assembly).
- fuel tubes.
- fuel injectors.
- fuel rail.
- fuel tank pressure (FTP) sensor.
- inertia fuel shutoff (IFS) switch.

The vehicle:
- uses a mechanical returnless fuel system.
- uses either a single container (L-shaped) or a dual-container (saddle-type) fuel tank.
- has a fuel level sensor assembly (saddle-tank only).
- has a FP module that supplies fuel under pressure to the fuel rail.
- has a fuel rail mounted Schrader valve on the early build vehicles.
- has a fuel filter (part of the FP module).
- has fuel tubes (liquid and vapor) along with brake tubes mounted on the underside of the vehicle in a bundle.
- has a FTP sensor (part of the fuel vapor tube assembly).
- is equipped with a sequential multi-port fuel injection (MFI) system.
- uses separately controlled fuel injectors for each cylinder. The fuel injectors are mounted to the intake manifold.
- fuel injectors are supplied with pressurized fuel from the FP module to the fuel rail.
- fuel injection rail pressure is controlled by the electronic FP module which is enabled by the PCM.
- has a 1/4 turn vented type fuel tank filler cap.
- has a fuel tank filler pipe assembly, which cannot be modified in any way and is serviced only by installation of a new fuel tank filler pipe assembly.
- has an IFS switch located in the passenger side footwell that shuts off fuel in the event of a collision.
- has a serviceable fuel level sender mounted on the FP module.
- has a serviceable fuel level sender mounted on the fuel level sensor assembly (saddle-tank only).
- has a fuel level vent valve (part of the FP module on Taurus X federal emission vehicles, part of the fuel tank on all other vehicles).