Ford Mustang (1999-2004) Service Manual: Fuel Tank And Lines (Description and Operation)

WARNING: Do not smoke, carry lighted tobacco or 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, possibly resulting in personal injury.

The vehicle utilizes a returnless fuel system consisting of:

  • the fuel tank.
  • a fuel tank filler pipe which contains a restrictor plate to permit only unleaded fuel to be pumped into the fuel tank.
  • a 1/8 turn fuel tank filler cap.
  • a fuel filter providing filtration to protect the fuel injectors.
  • a single fuel line accommodating the returnless fuel system.
  • a fuel injection supply manifold which contains a differential pressure sensor and a fuel temperature sensor.
  • a fuel pump and sender assembly which provides pressurized fuel to the engine and contains:
  • an inlet filter.
  • a check valve which maintains system pressure after the pump is shut off.
  • a pressure relief valve for overpressure protection in the event of restricted flow.

The fuel pump is controlled by an electronic fuel pump driver module which is enabled by the powertrain control module (PCM). Electrical power to the fuel pump is provided through the inertia fuel shutoff (IFS) switch, which is located in the luggage compartment.

Fuel Tank And Lines

Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual.

    Fuel Tank and Lines
    General Specifications Torque Specifications ...

    Fuel Tank
    Material Item Specification Serfactant (Merpol) ESE-M99B144-B ...

    Other materials:

    Symptom Chart
    Condition Possible Sources Action Traction-Lok does not work in snow, mud or on ice Differential. CARRY OUT the Traction- Lok Differential Operation Check in this section. REPAIR as necessar ...

    Steering System Symptom Definitions
    Drift/Pull Pull is a tugging sensation, felt by the hands on the steering wheel, that must be overcome to keep the vehicle going straight. Drift describes what a vehicle with this condition does with hands off the steering wheel. A vehicle-related drift/p ...

    Valve Tappets
    Material Removal CAUTION: If removing more than one valve tappet, mark the components removed for correct location. 1. Remove the lower intake manifold. For additional information, refer to Lower Intake Manifold in this section. 2. Remove the push r ...