Fuel System and Engine Controls - 4.0l SOHC Ford Explorer Sport Trac II

Material

Material

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

Fuel Charging and Controls

The fuel charging and control system consists of the

1. Electronic throttle body (TB)
2. Fuel supply tube
3. Fuel rails
4. Fuel injectors
5. Fuel pressure and temperature sensor

The fuel charging and controls system is

1. a sequential, multi-port fuel injection (SFI) system.
2. pulse-width modulated (PWM).
3. mass air flow (MAF) controlled.

Throttle Body

The electronic TB

1. controls air supply to the intake manifold by electronically positioning the throttle plate.
2. is not adjustable.
3. must be removed from the vehicle to be cleaned. Refer to «Throttle Body»(/ford/explorer-sport-trac/ii-2006-2010/remont/fuel-system/#fuel-system-and-engine-controls-40l-sohc) .

Fuel Supply Tube

The fuel supply tube

1. supplies fuel to the 2 fuel rails.

Fuel Rails

The fuel rails

1. deliver fuel to the individual fuel injectors.

Fuel Injectors

The fuel injectors

1. are electrically operated by the PCM.
2. atomize the fuel as the fuel is delivered.
3. are deposit-resistant and self-cleaning.
4. each have an internal solenoid which opens a needle valve to inject fuel into the cylinder heads.

Fuel Pressure and Temperature Sensor

The fuel pressure and temperature sensor

1. supplies the PCM with signals indicating fuel pressure and fuel temperature.

Refer to the Introduction - Gasoline Engines article.

Scheme 1

REMOVAL AND INSTALLATION

1. Remove the air cleaner outlet tube. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING»(/ford/explorer-sport-trac/ii-2006-2010/remont/removal-installation/#intake-air-distribution-system-and-filtering-system) article.
2. Disconnect the electronic throttle body (TB) electrical connector.
3. Disconnect the throttle position (TP) sensor electrical connector.
4. Remove the nut and position the wiring harness bracket aside. To install, tighten to 9 Nm (80 lb-in).
5. Remove the bolts, the electronic TB and the gasket. Discard the gasket. To install, tighten to 9 Nm (80 lb-in).
6. To install, reverse the removal procedure. Install a new electronic TB gasket.

Scheme 2

1. For additional information, refer to the procedures.

Fuel Rail

Material

Note. During the repair or replacement of fuel-related components, cap, tape or otherwise appropriately protect all liquid and vapor fuel openings to prevent the ingress of dirt or other contamination. Remove all caps, tape and other protective materials prior to installation.

1. Disconnect the spring lock coupling. For additional information, refer to «FUEL SYSTEM - GENERAL INFORMATION»(/ford/explorer-sport-trac/ii-2006-2010/remont/fuel-system/#fuel-system-general-information) article.
2. Remove the intake manifold. For additional information, refer to «ENGINE - 4.0L SOHC»(/ford/explorer-sport-trac/ii-2006-2010/remont/mechanical/#engine-40l-sohc) article.
3. Remove the fuel supply tube bracket bolt. To install, tighten to 8 Nm (71 lb-in).
4. Disconnect the fuel injector electrical connectors.
5. Disconnect the fuel pressure and temperature sensor electrical and vacuum connectors.
6. Remove the bolts and the fuel rail and injectors as an assembly. To install, tighten to 23 Nm (17 lb-ft).
7. To install, reverse the removal procedure.

Material

Note. During the repair or replacement of fuel-related components, cap, tape or otherwise appropriately protect all liquid and vapor fuel openings to prevent the ingress of dirt or other contamination. Remove all caps, tape and other protective materials prior to installation.

1. Remove the fuel rail. For additional information, refer to «Fuel Rail»(/ford/explorer-sport-trac/ii-2006-2010/remont/fuel-system/#fuel-system-and-engine-controls-40l-sohc__fuel-rail) .
2. Remove the fuel injectors and the fuel injector O-ring seals.
3. To install, reverse the removal procedure.

Fuel Rail Supply Tube

Material

Note. During the repair or replacement of fuel-related components, cap, tape or otherwise appropriately protect all liquid and vapor fuel openings to prevent the ingress of dirt or other contamination. Remove all caps, tape and other protective materials prior to installation.

1. Release the fuel system pressure. For additional information, refer to «FUEL SYSTEM - GENERAL INFORMATION»(/ford/explorer-sport-trac/ii-2006-2010/remont/fuel-system/#fuel-system-general-information) article.
2. Remove the intake manifold. For additional information, refer to «ENGINE - 4.0L SOHC»(/ford/explorer-sport-trac/ii-2006-2010/remont/mechanical/#engine-40l-sohc) article.
3. Disconnect the fuel rail supply tube spring lock coupling. For additional information, refer to «FUEL SYSTEM - GENERAL INFORMATION»(/ford/explorer-sport-trac/ii-2006-2010/remont/fuel-system/#fuel-system-general-information) article.
4. Remove the fuel rail supply tube bracket bolt. To install, tighten to 8 Nm (71 lb-in).
5. Remove the 4 bolts and the fuel rail supply tube. To install, tighten to 6 Nm (53 lb-in).
6. Remove and discard the fuel rail supply tube O-ring seals.
7. To install, reverse the removal procedure. Lubricate the new O-ring seals with clean engine oil prior to installation.

Scheme 3

1. Remove the RH rear quarter trim panel. For additional information, refer to «INTERIOR TRIM AND ORNAMENTATION»(/ford/explorer-sport-trac/ii-2006-2010/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) article.
2. Disconnect the fuel pump driver module (FPDM) electrical connector.
3. Remove the bolts and the FPDM. To install, tighten to 10 Nm (89 lb-in).
4. To install, reverse the removal procedure.

Scheme 4

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/ford/explorer-sport-trac/ii-2006-2010/remont/hoistjack/#jacking-and-lifting) article.
2. Disconnect the fuel pump driver module (FPDM) electrical connector.
3. Remove the bolts and the FPDM. To install, tighten to 10 Nm (89 lb-in).

See also:
• Introduction - Gasoline Engines
• INTAKE AIR DISTRIBUTION AND FILTERING
• FUEL SYSTEM - GENERAL INFORMATION
• ENGINE - 4.0L SOHC
• INTERIOR TRIM AND ORNAMENTATION
• JACKING AND LIFTING
• Throttle Body
• Fuel Rail