sensor FORD MUSTANG 2003 Workshop Manual

25. Remove the fuel charging wiring harness bracket bolt.
26. Disconnect the crankshaft position (CKP) sensor electrical connector.
27. Disconnect the A/C compressor electrical connector.
28. Unclip the harness from the bracket. Klj . 8 ba
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60. Remove the crankshaft position sensor pulse wheel.
61.
NOTE: Make sure the base circle of the camshaft is facing the roller follower being removed.
Using the special tool, remove the 32 roller followers.
62. Remove the bolts and the RH and LH timing chain tensioners.
63. Remove the RH and LH timing chain tensioner arms. Klj . 17 ba
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40. As a post-
check, make sure that the copper (marked) chain links are lined up with the dots on
the crankshaft sprockets and the camshaft sprockets.
41. Remove the special tool.
42. NOTE: Make sure the base circle of the camshaft is facing the roller follower being installed.
Using the special tool, install the 32 roller followers.
43. Position the crankshaft sensor ring on the crankshaft. Klj . 16 ba
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75. Clip the harness to the bracket.
76. Connect the A/C compressor electrical connector.
77. Connect the crankshaft position (CKP) sensor electrical connector.
78. Install the fuel charging wiring harness bracket bolt. Klj . 27 ba
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79.
NOTE: LH is shown, RH is similar.
Install the RH and LH radio ignition interference capacitors.
80. NOTE: LH is shown, RH is similar.
Connect the two radio ignition interference capacitor electrical connectors.
81. Connect the engine coolant temperature (ECT) sensor electrical connector, and attach the harness to the stud. Klj . 28 ba
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82. Connect the camshaft position (CMP) sensor electrical connector.
83. Install the power steering reservoir and mounting bolts.
84. Attach the wiring harness to the power steering support bracket.
85.
NOTE: Install a new exhaust gas recirculation (EGR) valve gasket.
Install the EGR valve and tube as an assembly. Klj . 29 ba
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86. Tighten the EGR tube to the exhaust manifold.
87. Connect the barometric pressure (BARO) sensor electrical connector.
88. Install and connect the positive crankcase ventilation (PCV) hose.
89. Install the PCV valve.
90. Install the vacuum accessory bracket and the mounting bolts. Klj . 30 ba
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15. Position the wiring harness bracket and install the nut.
16.
NOTE: RH is shown, LH is similar.
Position the exhaust and install the manifold flange nuts.
17. Connect the transmission wiring harness. 1. Connect the RH oxygen sensor connector retainer.
2. Connect the transmission harness electrical connector. Klj . 5 ba
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55. Connect the idle air control (IAC) and the throttle position (TP) electrical connectors.
56. Install the air cleaner outlet pipe and tighten the clamps.
57. Connect the vacuum hose.
58. Connect the breather hose.
59. Connect the intake air temperature (IAT) sensor electrical connector. Klj . 15 ba
172003 Mustang Workshop Manual
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z
are connected in series with the fuel pressure sensor.
z supply fuel from the fuel tank with a fuel pump mounted in the fuel tank.
A constant fuel pressure drop is maintained across the fuel injectors by the fuel pressure sensor. The
fuel pressure sensor:
zis positioned upstream from the fuel injectors on the fuel injection supply manifold.
Valve Train
The valve train operates as follows:
zball- tip hydraulic lash adjusters provide automatic lash adjustment.
z roller followers ride on the camshaft lobes, transferring the up-and- down motion of the
camshafts to the valves in the cylinder heads.
Positive Crankcase Ventilation System
All engines are equipped with a closed- type positive crankcase ventilation system recycling the
crankcase vapors to the upper intake manifold.
Lubrication System
The engine lubrication system operates as follows:
zoil is drawn into the oil pump through the oil pump screen cover and tube in the sump of the oil
pan.
z oil is pumped through the oil bypass filter on the left front side of the cylinder block.
z oil enters the main oil gallery where it is distributed to the crankshaft main journals and to both
cylinder heads.
z From the main journals, the oil is routed through cross- drilled passages in the crankshaft to
lubricate the connecting rod bearings. Controlled leakage through the crankshaft main bearings
and connecting rod bearings is slung radially outward to cool and lubricate the cylinder walls as
well as the entire connecting rod, piston and piston rings assembly.
z The left cylinder head is fed from a drilling into the supply passage feeding the main gallery at
the front of the cylinder block. The right cylinder head is fed from a drilling into the rear of the
main gallery. Main gallery pressure is reduced as it enters the cylinder head galleries through
fixed serviceable orifices located at the upper part of the feed passages. It is this reduced
pressure in the cylinder head galleries which feeds the camshaft journals, the hydraulic lash
adjusters and the primary and secondary timing chain tensioners.
z The camshaft lobe and roller followers are lubricated by splash created through valve train
operation.
Oil Pump
The lubrication system of the 4.6L (4V) engine is designed to provide optimum oil flow to critical
components of the engine through its entire operating range. The heart of the system is a positive
displacement internal gear oil pump using top seal rotors. Generically this design is known as a gerotor
pump, which operates as follows.
zThe oil pump is mounted on the front face of the cylinder block.
z The inner rotor is piloted on the crankshaft post and is driven through flats on the crankshaft. Klj . 2 ba
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