FORD MUSTANG 2003 Workshop Manual

Manufacturer: FORD, Model Year: 2003, Model line: MUSTANG, Model: FORD MUSTANG 2003
Pages: 4378, PDF Size: 66.11 MB

Page 2051 of 4378

Klj . 2 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

Page 2052 of 4378

REMOVAL AND INSTALLATION
Starter Motor —
3.8L
Removal
WARNING: When servicing starter motor (11002) or carrying out other underhood work in
the vicinity of the starter motor, be aware that the heavy gauge battery input lead at the starter
solenoid (11390) is "electrically hot" at all times. A protective cap or boot is provided over this
terminal that must be installed after servicing. Be sure to disconnect the battery negative cable
before servicing the starter. Failure to follow these instructions may result in personal injury.
WARNING: When working in area of the starter motor, be careful to avoid touching hot
exhaust components. Failure to follow these instructions may result in personal injury.
NOTE: When working on the starter system, make sure the anti- theft system is deactivated (if
equipped.)
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. Remove the ground cable nut.
4. Remove the cap.
5. Remove the nuts and position aside the wires.
SECTION 303-
06: Starting System 2003 Mustang Workshop Manual Klj . 1 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

Page 2053 of 4378

6. Remove the bolts and the starter motor.
Installation 1. To install, reverse the removal procedure. Klj . 2 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

Page 2054 of 4378

REMOVAL AND INSTALLATION
Starter Motor —
4.6L
Removal
WARNING: When servicing starter motor (11002) or carrying out other underhood work in
the vicinity of the starter motor, be aware that the heavy gauge battery input lead at the starter
solenoid (11390) is "electrically hot" at all times. A protective cap or boot is provided over this
terminal that must be installed after servicing. Be sure to disconnect the battery negative cable
before servicing the starter. Failure to follow these instructions can result in personal injury.
WARNING: When working in area of the starter motor, be careful to avoid touching hot
exhaust components. Failure to follow these instructions can result in personal injury.
NOTE: When working on the starter system, make sure the anti- theft system is deactivated (if
equipped.)
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. Remove the red starter solenoid safety cap.
4. Remove the starter solenoid nuts and position aside the wires.
5. NOTE: To ease removal, remove the upper, concealed bolt first.
Remove the three starter motor bolts.
SECTION 303-
06: Starting System 2003 Mustang Workshop Manual Klj . 1 ba
32003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

Page 2055 of 4378

6. Remove the starter motor.
Installation 1. Position the starter motor to the engine.
2. NOTE: To ease installation, first install the two lower bolts finger tight, then install the upper,
concealed bolt. Tighten all three bolts to specification.
Install the three starter motor bolts.
3. Connect the starter motor solenoid and starter motor cable connections.
4. Install the red starter solenoid safety cap.
5. Lower the vehicle.
6. Connect the battery ground cable. Klj . 2 ba
32003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

Page 2056 of 4378

Klj . 3 ba
32003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

Page 2057 of 4378

SPECIFICATIONS
SECTION 303-
07A: Engine Ignition — 3.8L 2003 Mustang Workshop Manual General Specifications
Item Specification
Base ignition timing TBD
Firing order 1-4-2-5-3-
6 Spark plug gap mm (in) 1.32-
1.42 (0.052- 0.056) Spark plug type production LH AWSF-
42E Spark plug type production RH AWSF-
42EG Spark plug type service AWSF-
42EE Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-
A ESE-
M1C171- A
Torque Specifications Description Nm lb-
ft lb-
in Spark plugs 15 11 —
Ignition coil bolts 7 — 52 Klj . 1 ba
12003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

Page 2058 of 4378

DESCRIPTION AND OPERATION
Engine Ignition
The ignition coil (12029), which is mounted on the upper intake manifold, can be described as a coil
pack containing three separate coil units. Each coil unit is individually controlled by the powertrain
control module (PCM) (12A650) through separate wire leads. Each coil unit activates two spark plugs
wired in a series by the spark plug wires (12286).
zOne spark plug activates on the compression stroke and uses the majority of the ignition coil's
stored energy.
z The other spark plug activates on the exhaust stroke and uses very little of the ignition coil's
stored energy.
z Because the pairs of spark plugs are connected in a series, one spark will travel from ground to
the electrode while the other spark will travel from the electrode to ground.
The spark plug (12405):
zchanges the high voltage pulse into a spark which ignites the fuel and air mixture.
z originally equipped on the vehicle has a platinum- enhanced active electrode for long life.
The crankshaft position (CKP) sensor (6C315):
NOTE: Initial engine ignition timing is set at 10 degrees ± 2 degrees before top dead center (BTDC)
and is not adjustable.
zis a variable reluctance sensor triggered by a 36- minus-1 tooth trigger pulse wheel located on
the crankshaft (6303) inside the engine front cover (6019).
The sine wave type signal generated from the crankshaft position sensor provides two types of
information:
zposition of the crankshaft in 10 degree increments
z the crankshaft speed (rpm)
The powertrain control module (PCM) (12A650) uses this information to determine ignition coil turn ON
and turn OFF times and misfire detection.
For additional information, refer to Section 303 - 14 .
SECTION 303-
07A: Engine Ignition — 3.8L 2003 Mustang Workshop Manual Klj . 1 ba
22003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

Page 2059 of 4378