sensor FORD MUSTANG 2003 Workshop Manual

z
are positioned so that their tips direct fuel just ahead of the engine intake valves.
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. Klj . 2 ba
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Item Part Number Description
1 6F066 Supercharger assembly
2 N806154 Screws (2 req'd)
3 9F715 Idle air control valve
4 — Idle air control valve gasket
5 9P697 Spacer assembly
6 9E936 Throttle body gasket
7 9E926 Throttle body
8 — Bolts (4 req'd)
9 — Bolts (2 req'd)
10 9E926 Throttle position sensor
11 N804178 Nuts (4 req'd)
12 — Studs (4 req'd)
13 — Spacer assembly gasket
14 9D475 Exhaust gas recirculation valve
15 — Stud
16 9D477 Exhaust gas recirculation tube
17 — Manifold absolute pressure sensor
18 9J460 Differential pressure feedback EGR system
19 9J459 Exhaust gas recirculation vacuum regulator
20 9J472 Vacuum accessory bracket Klj . 4 ba
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9 6268 Timing chain (2 req'd)
10 6M256 Timing chain guide
11 6L266 Timing chain tensioner
12 6L253 Timing chain tensioner arm
13 6268 Timing chain (2 req'd)
14 N804958 Bolt (2 req'd)
15 6B274 Timing chain guide
16 N606527 Bolt
17 19D269 A/C compressor
18 N806184 Bolts (3 req'd)
19 6306 Crankshaft sprocket
20 6L253 Timing chain tensioner arm
21 12A227 Ignition pulse ring
22 6C086 Engine front cover
23 N806177 Bolts (8 req'd)
24 N806300 Studs (5 req'd)
25 6700 Crankshaft front seal
26 6316 Crankshaft pulley
27 N806165 Washer
28 W701512 Stud
29 8A528 Water pump pulley
30 N806282 Bolts (4 req'd)
31 N806177 Bolts (4 req'd)
32 8501 Water pump
33 N808102 Bolt
34 19A216 Belt idler pulley
35 N804178 Nut
36 N806300 Harness support bracket
37 N806300 Stud
38 N806155 Bolt
39 6C315 Crankshaft position sensor
40 N806155 Bolt
41 6B288 Camshaft position sensor
42 N808920 Bolts (3 req'd)
43 6C254 Crankshaft extension support pulley
44 10153 Lower support bracket
45 N605909 Bolts (2 req'd)
46 8620 Accessory drive belt
47 N811268 Bolt
48 8B603 Belt idler bracket support
49 N808198 Stud
50 Klj . 8 ba
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9 9278 Oil pressure sender
10 6884 Oil filter adapter
11 6A636 Oil filter adapter gasket
12 N620482 Dowel
13 87836 Plug
Item Part Number Description
1 N807198 Dowel pin (2 req'd)
2 N807309 Bolt
3 N807959 Bolt
4 18663 Heater water hose
5 W500110 Bolt (2 req'd)
6 12A699 Knock sensor (2 req'd)
7 N807309 Bolt (2 req'd)
8 18696 Heater water hose
9 7120 Pilot bearing
10 6K318 Crankshaft rear retainer
11 N806155 Bolt (6 req'd)
12 6310 Crankshaft oil slinger
13 6375 Flywheel
14 N808139 Bolt (8 req'd)
15 7550 Clutch disc
16 7563 Clutch pressure plate
17 N808969 Bolt (6 req'd)
18 6701 Crankshaft rear oil seal Klj . 14 ba
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7. Remove the air cleaner outlet tube. For additional information, refer to
Section 303 - 12 .
8. Disconnect the throttle position (TP) sensor and the idle air control (IAC) valve electrical connectors.
9. Disconnect the vacuum hose.
10. Disconnect the fuel hose spring lock coupling. For additional information, refer to Section 310 -
00 .
11. Disconnect the accelerator controls. zDisconnect the accelerator cable.
z If equipped, disconnect the speed control cable. 12. Remove the accelerator cable bracket bolts. Klj . 2 ba
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21. Remove the mounting bolts and the vacuum accessory bracket.
22. Disconnect the exhaust manifold to EGR valve tube.
23. Disconnect the barometric pressure (BARO) sensor electrical connector.
24. Disconnect the positive crankcase ventilation hose. Klj . 5 ba
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IN-
VEHICLE REPAIR
Valve Cover RH
Removal and Installation 1. Remove the RH ignition coils. For additional information, refer to Section 303 - 07C .
2. Remove the A/C condenser to evaporator tube. For additional information, refer to Section 412 -
03 .
3. Remove the A/C manifold and tube assembly. For additional information, refer to Section 412 -
03 .
4. Disconnect the throttle position (TP) sensor and the idle air control (IAC) valve electrical connectors.
5. Disconnect the vacuum hose.
6. Disconnect the fuel hose spring lock coupling. For additional information, refer to Section 310 -
00 .
SECTION 303-
01C: Engine — Cobra 4.6L (4V) 2003 Mustang Workshop Manual Material
Item Specification
Silicone Gasket and Sealant
F7AZ-
19554- EA WSE-
M4G323- A4 Metal Surface Cleaner
F4AZ-
19A536- RA WSE-
M5B392- A Klj . 1 ba
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IN-
VEHICLE REPAIR
Valve Cover LH
Removal and Installation 1. Remove the Hydro Boost brake booster. For additional information, refer to Section 206 - 07 .
2. Remove the LH ignition coils. For additional information, refer to Section 303 - 07C .
3. Disconnect the engine coolant temperature (ECT) sensor and unclip the wiring harness from the stud.
4. Unclip the wiring harness from the power steering bracket.
5. Disconnect the electrical connectors from the fuel pulse damper, EGR vacuum regulator solenoid, supercharger bypass vacuum solenoid, and the differential pressure feedback EGR
system.
SECTION 303-
01C: Engine — Cobra 4.6L (4V) 2003 Mustang Workshop Manual Material
Item Specification
Silicone Gasket and Sealant
F7AZ-
19554- EA WSE-
M4G323- A4 Metal Surface Cleaner
F4AZ-
19A536- RA WSE-
M5B392- A Klj . 1 ba
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10. Remove the mounting bolts and the vacuum accessory bracket.
11. Disconnect the camshaft position (CMP) sensor electrical connector.
12. Remove the fasteners and position the power steering reservoir aside.
13. Remove the bolt and position the oil level indicator tube aside. Klj . 3 ba
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6. Disconnect the crankshaft position sensor.
7. Remove the four front bolts.
8. Disconnect the generator electrical connector.
9. Remove the generator B+ terminal nut and detach the B+ cable. Klj . 2 ba
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