FORD MUSTANG 2003 Workshop Manual

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 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. Remove the supply manifold. For additional information, refer to Supply Manifold in this section.
2. Remove the eight fuel injectors from the supply manifold.
Installation CAUTION: The retaining clip must be in the upper groove on the injector or the injector
can become loose.
1. NOTE: Inspect the two O- rings from each fuel injector. Install new O- rings as needed.
NOTE: Lubricate the new O- rings with clean engine oil.
To install, reverse the removal procedure.
SECTION 303-
04D: Fuel Charging and Controls — Mach I 4.6L (4V) 2003 Mustang Workshop Manual Klj . 1 ba
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Klj . 2 ba
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REMOVAL AND INSTALLATION
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 can ignite. Failure to follow these instructions can result in personal injury.
1. With the vehicle in neutral, position it on a hoist. For additional information, refer to Section 100 -
02 .
2. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
3. Remove the upper intake manifold. For additional information, refer to Section 303 - 01D .
4. Disconnect the following connectors: zThe 42 pin engine bulkhead electrical connector.
z The 16 pin electrical connector.
5. Separate the wiring harness from the dash panel.
6. Remove the RH ignition coil cover. zRemove the bolts.
z Remove the coil cover.
SECTION 303-
04D: Fuel Charging and Controls — Mach I 4.6L (4V) 2003 Mustang Workshop Manual Klj . 1 ba
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7. Disconnect the RH ignition coil electrical connectors.
8. Disconnect the heated positive crankcase ventilation (PCV) valve electrical connector.
9. Remove the LH ignition coil cover.
zRemove the bolts.
z Remove the coil cover.
10. Disconnect the LH ignition coil electrical connectors. Klj . 2 ba
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11. Disconnect the transmission main control harness electrical connector.
12. Disconnect the engine control jumper harness electrical connector.
13. Remove the wiring harness bracket bolt.
14. Disconnect the RH heated oxygen sensor (HO2S) electrical connector. Klj . 3 ba
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15.
NOTE: LH side is shown, RH side is similar.
Disconnect the two radio ignition interference capacitor electrical connectors.
16. Disconnect the battery supply wire from the power distribution box stud.
17. NOTE: The electrical connector is located under the power distribution box.
Disconnect the electrical connector. Klj . 4 ba
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18. Disconnect the electrical connector.
19. Disconnect the following generator electrical connectors:
zBattery power supply wire.
z Voltage regulator.
20. Disconnect the camshaft position (CMP) sensor electrical connector.
21. Disconnect the engine coolant temperature (ECT) sensor electrical connector. Klj . 5 ba
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22. Remove the wiring harness.
zSeparate the wiring harness from the LH valve cover stud bolt.
z Separate the wiring harness from the power steering reservoir bracket.
Installation 1. Position the wiring harness: zInstall the wiring harness retainer onto the LH valve cover stud bolt.
z Install the wiring harness retainer into the power steering reservoir.
2. Connect the ECT sensor electrical connector.
3. Connect the CMP sensor electrical connector. Klj . 6 ba
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4. Connect the following generator electrical connectors:
zBattery power supply wire.
z Voltage regulator.
5. Connect the electrical connector.
6. Connect the electrical connector.
7. Install the battery supply wire to the power distribution box stud. Klj . 7 ba
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8.
NOTE: LH side is shown, RH side is similar.
Connect the two radio ignition interference capacitor electrical connectors.
9. Connect the RH HO2S electrical connector.
10. Install the wiring harness bracket bolt.
11. Connect the engine control jumper harness electrical connector. Klj . 8 ba
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