fuel FORD MUSTANG 2003 Workshop Manual

8. Connect the fuel pressure sensor electrical connector and the vacuum hose.
9.
NOTE: Make sure the locking clips are fully engaged into the bracket.
Reposition the accelerator cable and the speed control cable (if equipped) and install the cables
into the bracket.
10. Connect the hose.
11. Connect the IAC electrical connector and install the main chassis vacuum hose. Klj . 6 ba
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12. Connect the four RH fuel injector electrical connectors.
13. Connect the PCV hose.
14. Position the IAC hose and connect the hose.
15. Install the throttle body.
16. Connect the fuel line. Klj . 7 ba
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SPECIFICATIONS
SECTION 303-
04C: Fuel Charging and Controls — Cobra 4.6L (4V) 2003 Mustang Workshop Manual General Specifications
Item Specification
Lubricants and Chemicals
SAE 5W-
20 Premium Synthetic Blend Motor Oil, XO-5W20- QSP WSS-
M2C153- H
Torque Specifications Description Nm lb-
in Battery ground bolt 10 89
Throttle body bolts 9 80
Fuel injection supply manifold bolts 10 89
42-
pin engine bulkhead electrical connector bolt 6 53
Ignition coil cover bolts 10 89
Battery supply wire nut to power distribution box 8 71
Battery supply wire nut to generator 8 71 Klj . 1 ba
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DESCRIPTION AND OPERATION
Fuel Charging and Controls
The fuel injection supply manifold:
zreceives fuel from the fuel supply line.
z delivers fuel to the fuel injector.
The throttle body:
zcontrols air supply to the intake manifold by positioning the throttle plate.
z connects the accelerator cable and, if equipped, the speed control actuator cable to the throttle
lever.
z is not adjustable.
z cannot be cleaned.
The fuel injector:
zis electrically operated by the powertrain control module (PCM).
z has an internal solenoid that opens a needle valve to inject fuel into the lower intake manifold.
z atomizes the fuel as the fuel is delivered.
z is deposit- resistant. Do not clean.
The fuel pressure relief valve:
zis used to inspect and relieve fuel pressure.
SECTION 303-
04C: Fuel Charging and Controls — Cobra 4.6L (4V) 2003 Mustang Workshop Manual Klj . 1 ba
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DIAGNOSIS AND TESTING
Fuel Charging and Controls
Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual.
SECTION 303-
04C: Fuel Charging and Controls — Cobra 4.6L (4V) 2003 Mustang Workshop Manual Klj . 1 ba
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REMOVAL AND INSTALLATION
Throttle Body
Removal and Installation
WARNING: Do not smoke or carry lighted tobacco or open flame of any type when
working on or near any fuel related components. Highly flammable mixtures are always present
and can ignite. Failure to follow these instructions can result in personal injury.
CAUTION: The throttle body bore and plate area have a special coating and cannot be
cleaned.
1. Remove the air cleaner outlet tube. For additional information, refer to Section 303 - 12 .
2. Disconnect the throttle position (TP) sensor and the idle air control (IAC) valve electrical connectors.
3. Disconnect the accelerator controls. zDisconnect the accelerator cable.
z If equipped, disconnect the speed control cable.
4. NOTE: Discard the throttle body gasket after removing the throttle body. Remove the bolts and the throttle body. SECTION 303-
04C: Fuel Charging and Controls — Cobra 4.6L (4V) 2003 Mustang Workshop Manual Klj . 1 ba
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REMOVAL AND INSTALLATION
Fuel Charging Wiring Harness
Removal and Installation
WARNING: Do not smoke or carry lighted tobacco or open flame of any type when
working on or near any fuel related components. Highly flammable mixtures are always present
and can ignite. Failure to follow these instructions can result in personal injury.
1. Disconnect the battery ground cable.
2. Remove the exhaust gas recirculation (EGR) valve and the exhaust manifold to EGR valve tube. For additional information, refer to Section 303 - 08 .
3. Remove the bolts and the LH ignition coil cover.
4. Disconnect the LH ignition coil electrical connectors. 5. Disconnect the barometric pressure (BARO) sensor electrical connector. SECTION 303-
04C: Fuel Charging and Controls — Cobra 4.6L (4V) 2003 Mustang Workshop Manual Klj . 1 ba
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10. Remove the fuel charging wiring harness bracket bolt.
11. Disconnect the following:
zThe 42- pin engine bulkhead electrical connector.
z The 16- pin electrical connector.
12. Separate the wiring harness from the dash panel.
13. Remove the air cleaner outlet pipe. For additional information, refer to Section 303 - 12 . Klj . 3 ba
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24. Unclip the harness from the bracket.
25. Lower the vehicle.
26.
NOTE: LH side shown, RH side similar.
Disconnect the two radio ignition interference capacitor electrical connectors.
27. Disconnect the eight fuel injectors. Klj . 6 ba
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28. Separate the harness from the fuel supply manifold studs in four places and remove the fuel
charging wiring harness from the vehicle.
29. To install, reverse the removal procedure. Klj . 7 ba
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