2003 FORD MUSTANG engine

IN-
VEHICLE REPAIR
Camshaft
Removal 1. Remove the valve tappets. For additional information, refer to Valve Tappets in this section.
2. Remove the timing chain. For additional information, refer to Timing Chain in this section.
3. Position the wire harness aside.
4. Remove the radiator fan and shroud assembly.
5. Remove the engine balance shaft drive gear from the camshaft. 1. Remove the camshaft key.
2. Remove the engine balance shaft drive gear.
SECTION 303-
01A: Engine — 3.8L 2003 Mustang Workshop Manual Material
Item Specification
SAE 5W-
20 Premium Synthetic
Blend Motor Oil
XO- 5W20-QSP or equivalent WSS-
M2C153-
H Klj . 1 ba
32003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

6. Remove the camshaft.
1. Remove the bolts.
2. Remove the camshaft thrust plate.
3. Remove the spacer.
4. Remove the camshaft.
Installation 1. NOTE: Lubricate the camshaft with clean engine oil prior to installation.
To install, reverse the removal procedure. Klj . 2 ba
32003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

IN-
VEHICLE REPAIR
Engine Dynamic Balance Shaft
Removal 1. Remove the timing chain (6268). For additional information, refer to Timing Chain in this
section.
2. Disconnect and position the wire harness aside.
3. Remove the radiator fan and shroud assembly (8146).
4. Remove the engine dynamic balance shaft (6A311). zRemove the bolts.
z Remove the balance shaft driver gear, thrust plate and engine dynamic balance shaft as
an assembly. Installation SECTION 303-
01A: Engine — 3.8L 2003 Mustang Workshop Manual Klj . 1 ba
32003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

1. Turn the camshaft so that the timing mark is at 12 o'clock and install the engine dynamic
balance shaft assembly into the cylinder block (6010). Turn the engine balance shaft driven
gear so that the timing mark lines up with the timing mark on the engine balance shaft drive
gear (6A303).
2. NOTE: If correctly aligned, the engine dynamic balance shaft keyway will be at 12 o'clock and
the camshaft keyway will be at 6 o'clock on the camshaft.
Install the bolts.
3. Install the radiator fan and shroud assembly.
4. Connect the connector and install the pin- type retainer. Klj . 2 ba
32003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

IN-
VEHICLE REPAIR
Timing Chain
Removal 1. Remove the timing cover. For additional information, refer to Engine Front Cover in this section.
2. Remove the camshaft position sensor drive gear. 1. Remove the bolt.
2. Remove the camshaft position sensor drive gear.
3. Rotate the crankshaft (6303) until the timing marks and keyways align.
4. Compress and install a retaining pin to hold the timing chain tensioner (6L266).
5. Remove the camshaft sprocket (6256), the crankshaft sprocket (6306) and the timing chain/belt (6268) as an assembly.
SECTION 303-
01A: Engine — 3.8L 2003 Mustang Workshop Manual Klj . 1 ba
52003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

7. Install the camshaft position sensor drive gear.
8. Remove the retaining pin.
9. Install the engine front cover. For additional information, refer to
Engine Front Cover in this
section. Klj . 4 ba
52003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

IN-
VEHICLE REPAIR
Exhaust Manifold — LH
Removal 1. Raise and support the vehicle. For additional information, refer to Section 100 - 02 .
2. Remove the LH exhaust manifold flange nuts.
3. Remove the RH exhaust manifold flange nuts.
4. Lower the vehicle.
5. NOTE: Discard the exhaust manifold gasket.
Remove the LH exhaust manifold (9431). zRemove the nuts.
SECTION 303-
01A: Engine — 3.8L 2003 Mustang Workshop Manual Klj . 1 ba
32003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...

IN-
VEHICLE REPAIR
Exhaust Manifold RH
Removal and Installation 1. Disconnect the battery negative cable. For additional information, refer to Section 414 - 01 .
2. Remove the air cleaner outlet pipe. For additional information, refer to Section 303 - 12 .
3. Disconnect the differential pressure feedback exhaust gas recirculation (EGR) system electrical and vacuum connections.
4. Disconnect the EGR tube.
5. Remove the EGR tube. 6. Raise and support the vehicle. For additional information, refer to Section 100 - 02 . SECTION 303-
01A: Engine — 3.8L 2003 Mustang Workshop Manual Klj . 1 ba
32003 Mustang Workshop Manual
17. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_4464/S3B~us~en~ ...