Fuel System

FUEL SYSTEM

WARNING: Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may be ignited, resulting in possible personal injury.

The fuel system consists of:
- a fuel rail.
- a multiport fuel injection (MFI) system.
- a standard fuel tank.
- fuel tubes.
- a fuel filter providing filtration to protect the fuel injectors from foreign material.
- 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 1/8 turn-type fuel tank filler cap.
- an inertia fuel shutoff (IFS) switch.
- a bottom mount fuel pump module (FPM) containing:
- the electric fuel pump which provides pressurized fuel to the engine.
- the fuel level sensor.
- an inlet filter.
- a check valve which maintains system pressure after the pump is shut off.
- a pressure relief for overpressure protection in the event of restricted air flow.

The fuel pump is controlled by powertrain control module (PCM). Electrical power to the pump is provided through the inertia fuel shutoff (IFS) switch located under the right front kick panel.

The engines are equipped with sequential multiport fuel injection. The powertrain control module (PCM) is able to maintain constant fuel pressure by varying fuel pump module (FPM) output. This is accomplished by increasing or decreasing voltage supplied to the tank-mounted FPM.

ACCELERATION CONTROL

CAUTION:
- Make sure surrounding components such as wiring, hoses, sound insulation and floor carpeting are not contacting the sliding inner cable of the accelerator cable or the accelerator pedal and shaft. Failure to follow these instructions may result in personal injury.
- The accelerator pedal and shaft should travel smoothly from idle to wide-open throttle positions. Hesitation on return or prevention of return to the idle position must not occur.
- The sliding inner member of the accelerator cable should not be lubricated and is not repairable.

The acceleration controls consist of the pedal and shaft assembly, accelerator cable and the accelerator cable bracket.

The throttle is controlled by an accelerator cable attached to the accelerator pedal and shaft.