2003 FORD MUSTANG engine

REMOVAL AND INSTALLATION
Engine Coolant Temperature (ECT) Sensor —
4.6L (2V)
Removal 1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Partially drain the cooling system. For additional information, refer to Section 303 - 03A .
3. Disconnect the engine coolant temperature (ECT) sensor (12A648) connector.
4. Remove the ECT sensor.
Installation 1. To install, reverse the removal procedure.
SECTION 303-
14: Electronic Engine Controls 2003 Mustang Workshop Manual Klj . 1 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Engine Coolant Temperature (ECT) Sensor —
Cobra
Removal and Installation 1. Partially drain the engine cooling system. For additional information, refer to Section 303 - 03A .
2. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
3. Remove the ECT sensor.
4. To install, reverse the removal procedure. zApply sealant to the ECT sensor threads.
SECTION 303-
14: Electronic Engine Controls 2003 Mustang Workshop Manual Material
Item Specification
Pipe Sealant with Teflon
D8AZ-
19554- A WSK-
M2G350- A2 Klj . 1 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Engine Coolant Temperature (ECT) Sensor —
Mach I
Removal and Installation 1. Remove the air intake scoop. For additional information, refer to Section 303 - 12 .
2. Partially drain the engine cooling system. For additional information, refer to Section 303 - 03A .
3. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
4. Remove the ECT sensor.
5. To install, reverse the removal procedure. zApply sealant to the ECT sensor threads.
SECTION 303-
14: Electronic Engine Controls 2003 Mustang Workshop Manual Material
Item Specification
Pipe Sealant with Teflon
D8AZ-
19554- A WSK-
M2G350- A2 Klj . 1 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Mass Air Flow (MAF) Sensor —
3.8L
Removal
CAUTION: The mass air flow (MAF) sensor hot wire sensing element and housing are
calibrated as a unit and must be repaired as a complete assembly. Do not damage the sensing
element (internal to housing) or possible failure to the mass air flow sensor may occur.
1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Remove the air cleaner and duct assembly. For additional information, refer to Section 303 - 12 .
3. Release the four tabs and remove the mass air flow (MAF) sensor.
4. Disconnect the connector.
5. Remove the mass air flow sensor (MAF). zRemove the nuts and the MAF sensor.
SECTION 303-
14: Electronic Engine Controls 2003 Mustang Workshop Manual Klj . 1 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Mass Air Flow (MAF) Sensor —
4.6L (2V)
Removal
CAUTION: The mass air flow (MAF) sensor hot wire sensing element and housing are
calibrated as a unit and must be repaired as a complete assembly. Do not damage the sensing
element (internal to housing) or possible failure to the mass air flow sensor may occur
1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Remove the air cleaner outlet tube. For additional information, refer to Section 303 - 12 .
3. Remove the mass air flow sensor (MAF). zDisconnect the connector.
z Remove the four nuts and the MAF sensor.
Installation 1. To install, reverse the removal procedure.
SECTION 303-
14: Electronic Engine Controls 2003 Mustang Workshop Manual Klj . 1 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Mass Air Flow (MAF) Sensor —
Cobra
Removal and Installation 1. Disconnect the intake air temperature (IAT) sensor.
2. Disconnect the breather hose.
3. Disconnect the vacuum hose. 4. Loosen the clamps and remove the air cleaner outlet pipe. SECTION 303-
14: Electronic Engine Controls 2003 Mustang Workshop Manual Klj . 1 ba
32003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Mass Air Flow (MAF) Sensor —
Mach I
Removal
CAUTION: The mass air flow (MAF) sensor hot wire sensing element and housing are
calibrated as a unit and must be repaired as a complete assembly. Do not damage the sensing
element (internal to housing) or possible failure to the mass air flow sensor may occur
1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Remove the air cleaner outlet tube. For additional information, refer to Section 303 - 12 .
3. Remove the mass air flow sensor (MAF). zDisconnect the connector.
z Remove the four nuts and the MAF sensor.
Installation 1. To install, reverse the removal procedure.
SECTION 303-
14: Electronic Engine Controls 2003 Mustang Workshop Manual Klj . 1 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

REMOVAL AND INSTALLATION
Heated Oxygen Sensor (HO2S)
Removal and Installation
1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Raise and support the vehicle. For additional information, refer to Section 100 - 02 .
3. NOTE: Two heated oxygen sensors (HO2S) are used for the engine control system. They are
located in the dual converter Y pipe. The left side (HO2S) is shown, the right side is similar.
Disconnect the HO2S electrical connector.
4. NOTE: If necessary, lubricate the heated oxygen sensors with penetrating and lock lubricant to
assist in removal.
Using the special tool, remove the HO2S from the dual converter Y pipe.
5. To install, reverse the removal procedure.
SECTION 303-
14: Electronic Engine Controls 2003 Mustang Workshop Manual Special Tool(s)
Socket, Exhaust Gas Oxygen
Sensor
303-
476 (T94P-9472- A)
Material Item Specification
Penetrating and Lock Lubricant
or equivalent E8AZ-
19A501-
B Klj . 1 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...