2003 FORD MUSTANG warning light

REMOVAL AND INSTALLATION
Supply Manifold
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 may ignite. Failure to follow these instructions may result in personal injury.
WARNING: Fuel in the fuel system remains under high pressure even when the engine is
not running. Before working on or disconnecting any of the fuel lines or fuel system
components, the fuel system pressure must be relieved. Failure to follow these instructions
may result in personal injury.
1. Disconnect the battery ground cable.
2. Remove the upper intake manifold. For additional information, refer to Section 303 - 01A .
3. Relieve the fuel pressure. For additional information, refer to Section 310 - 00 .
4. Disconnect the fuel line. For additional information, refer to Section 310 - 00 .
5. Separate the wiring harness from the supply manifold.
6. NOTE: Right side shown, left side similar.
Disconnect the six fuel injector electrical connectors. 7. Disconnect the fuel pressure sensor. SECTION 303-
04A: Fuel Charging and Controls — 3.8L 2003 Mustang Workshop Manual Klj . 1 ba
32003 Mustang Workshop Manual
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REMOVAL AND INSTALLATION
Throttle Body
Removal
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 may be ignited. Failure to follow these instructions may 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 (9B659). For additional information, refer to Section 303 - 12 .
2. Disconnect the throttle position (TP) sensor electrical connector.
3. Disconnect the accelerator controls. zDisconnect the accelerator cable (9E926).
z Disconnect the speed control cable (9A825).
z Disconnect the return spring.
4. NOTE: Discard the throttle body gasket.
Remove the throttle body. zRemove the bolts.
z Remove the throttle body.
SECTION 303-
04B: Fuel Charging and Controls — 4.6L (2V) 2003 Mustang Workshop Manual Klj . 1 ba
22003 Mustang Workshop Manual
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REMOVAL AND INSTALLATION
Fuel Injectors
Removal
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 may be ignited. Failure to follow these instructions may result in personal injury.
WARNING: Fuel in the fuel system remains under high pressure even when the engine is
not running. Before working on or disconnecting any of the fuel lines or fuel system
components, the fuel pressure must be relieved. Failure to follow these instructions may result
in personal injury.
1. Relieve the fuel pressure. For additional information, refer to Section 310 - 00 .
2. Remove the supply manifold. For additional information, refer to Fuel Injection Supply Manifold in this section.
3. Remove the fuel injectors from the supply manifold.
Installation 1. NOTE: Lubricate the new O- rings with Super Premium SAE 10W-30, XO-10W30- DSP or
equivalent meeting Ford specification WSS- M2C153-G, to aid installation.
Inspect the two O- rings on each fuel injector. Install new O- rings if necessary.
2. Install the fuel injectors onto the supply manifold.
SECTION 303-
04B: Fuel Charging and Controls — 4.6L (2V) 2003 Mustang Workshop Manual Klj . 1 ba
22003 Mustang Workshop Manual
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REMOVAL AND INSTALLATION
Fuel Charging Wiring Harness
Removal
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 may be ignited. Failure to follow these instructions may result in personal injury.
1. Disconnect the battery ground cable (14301). For additional information, refer to Section 414 -
01 .
2. Disconnect the air cleaner outlet tube. For additional information, refer to Section 303 - 12 .
3. Disconnect the 42 pin connector.
4. Separate the wiring harness retainers from the dash panel.
5. Disconnect the following connectors: zThrottle position (TP) sensor
z Idle air control (IAC) valve
SECTION 303-
04B: Fuel Charging and Controls — 4.6L (2V) 2003 Mustang Workshop Manual Klj . 1 ba
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REMOVAL AND INSTALLATION
Fuel Injection Supply Manifold
Removal
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 may be ignited. Failure to follow these instructions may result in personal injury.
WARNING: Fuel in the fuel system remains under high pressure even when the engine is
not running. Before working on or disconnecting any of the fuel lines or fuel system
components, the fuel pressure must be relieved. Failure to follow these instructions may result
in personal injury.
1. Disconnect the battery ground cable (14301). For additional information, refer to Section 414 -
01 .
2. Disconnect the air cleaner outlet tube. For additional information, refer to Section 303 - 12 .
3. Relieve the fuel pressure. For additional information, refer to Section 310 - 00 .
4. Disconnect the fuel line. For additional information, refer to Section 310 - 00 .
5. Remove the throttle body (9E926). For additional information, refer to Throttle Body in this
section.
6. Remove the idle air control (IAC) hose and position it out of the way.
7. Remove the positive crankshaft ventilation (PCV) hose.
SECTION 303-
04B: Fuel Charging and Controls — 4.6L (2V) 2003 Mustang Workshop Manual Klj . 1 ba
82003 Mustang Workshop Manual
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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
22003 Mustang Workshop Manual
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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
72003 Mustang Workshop Manual
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REMOVAL AND INSTALLATION
Fuel Injection Supply Manifold and Fuel Injector
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.
WARNING: Fuel in the fuel system remains under high pressure even when the engine is
not running. Before working on or disconnecting any of the fuel lines or fuel system
components, the fuel system pressure must be relieved. Failure to follow these instructions
can result in personal injury.
1. Disconnect the battery ground cable.
2. Remove the air cleaner outlet tube. For additional information, refer to Section 303 - 12 .
3. Release the fuel pressure. For additional information, refer to Section 310 - 00 .
4. Disconnect the fuel supply hose spring lock coupling. For additional information, refer to Section 310 - 00 .
5. Remove the exhaust gas recirculation (EGR) valve and the exhaust manifold- to-EGR valve
tube. For additional information, refer to Section 303 - 08 .
6. Remove the throttle body and spacer assembly.
7. Disconnect the vacuum hose.
SECTION 303-
04C: Fuel Charging and Controls — Cobra 4.6L (4V) 2003 Mustang Workshop Manual Material
Item Specification
SAE 5W-
20 Premium Synthetic
Blend Motor Oil
XO- 5W20- QSP WSS-
M2C153-
H Klj . 1 ba
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