2003 FORD MUSTANG ignition

i
Measured at 42 mm from piston dome, at 90 degrees to the piston pin.
j Piston pin outer diameter is larger than piston pin bore, providing a possible interference fit.
k Specification in 90.200 mm diameter gauge.
l With installation of a new filter.
a "Fixed" refers to systems with manually- adjusted centers which are bolted in place and considered
fixed. Drive Belt Tension Belt Type Belt Tension
6 Rib (Fixed)
a 110-
120 Lbs
Torque Specifications Description Nm lb-
ft lb-
in Camshaft sprocket bolt 115 85 —
Connecting rod bolt a a a
Engine front cover bolt a a a
Drive belt tensioner bolts 25 18 —
Cylinder head bolt a a a
Pulley to crankshaft bolt a a a
EGR valve to intake manifold a a a
Exhaust manifold studs 25 18 —
Lower intake manifold-
to-cylinder head bolt a a a
Main bearing cap bolt a a a
Oil filter adapter bolt 25 18 —
Oil bypass filter to adapter 50 37 —
Oil pump screen cover and tube-
to-oil pump bolt 10 — 89
Oil pan-to-
cylinder block bolt a a a
Oil pan-to-
engine front cover bolts a a a
Oil pump-
to-cylinder block bolt 10 — 89
Oil pump screen and pickup tube-
to-main bearing cap stud spacer bolt 25 18 —
Coolant pump pulley bolts 25 18 —
Valve cover bolt 10 — 89
Coolant pump-
to-cylinder block bolt 25 18 —
EGR valve to exhaust manifold tube nuts 40 30 —
Power steering pump to engine 25 18 —
Outlet heater hose stud bolts 25 18 —
Camshaft cap cluster to cylinder head 10 — 89
Timing chain tensioner bolts—
primary 25 18 —
Timing chain tensioner bolts—
secondary 10 — 89
A/C compressor bolts 25 18 —
Ignition coil cover bolts 10 — 89
Generator mounting bracket retainers 10 — 89 Klj . 5 ba
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DESCRIPTION AND OPERATION
Engine
WARNING: Do not operate the engine with the hood open until the fan blade has been first
examined for possible cracks and separation.
The 4.6L (4V) (281 CID) is a V- 8 engine with the following features:
z dual overhead camshafts
z four valves per cylinder
z sequential multiport fuel injection (SFI)
z an aluminum intake manifold
z aluminum cylinder heads
z a cast aluminum, 90-degree V- cylinder block
z individually chain- driven camshafts with a hydraulic timing chain tensioner on each timing chain
z the electronic ignition system with eight ignition coils
Identification
Always refer to these labels when replacement parts are necessary or when checking engine
calibrations. The engine parts often differ within a CID family. Verification of the identification codes will
ensure that the correct parts are obtained. These codes contain all the pertinent information relating to
the dates, optional equipment and revisions. The Ford Master Parts Catalog contains a complete
listing of the codes and their application.
Code Information
The engine code information label, located on the side of the valve cover and the front side of the
valve cover, contains the following:
zengine build date
z engine plant code
z engine code
Exhaust Emission Control System
Operation and necessary maintenance of the exhaust emission control devices used on this engine is
covered in the Powertrain Control/Emissions Diagnosis (PC/ED) manual.
Induction System
The sequential multiport fuel injection (SFI) provides the fuel/air mixture needed for combustion in the
cylinders. The eight solenoid- operated fuel injectors:
z are mounted in the lower intake manifold.
z meter fuel into the air intake stream in accordance with engine demand.
z are positioned so that their tips direct fuel just ahead of the engine intake valves.
SECTION 303-
01D: Engine — Mach I 4.6L (4V) 2003 Mustang Workshop Manual Klj . 1 ba
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9 — Bolt (24 req'd)
10 6A271 Camshaft
11 6529 Roller follower (8 req'd)
12 6C501 Hydraulic lash adjuster
13 6065 Bolt (20 req'd)
14 6A273 Camshaft
15 6B278 Camshaft bearing cap (2 req'd)
16 9448 Exhaust manifold gasket
17 9F485 EGR valve tube to manifold connector
18 W701706 Nut (8 req'd)
19 9431 Exhaust manifold
20 6C324 PCV tube
21 6A505 Valve cover
22 W708442 Stud bolt (4 req'd)
23 N808199 Bolt (16 req'd)
24 6766 Oil filler cap
25 12A366 Ignition coils
26 6P068 Ignition coil cover
27 N807309 Bolt (4 req'd)
28 6050 Cylinder head Klj . 8 ba
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9 6268 Timing chain (2 req'd)
10 6K297 Timing chain guide
11 6268 Timing chain (2 req'd)
12 6M269 Timing chain tensioner
13 6L253 Timing chain tensioner arm
14 N605893 Bolt (4 req'd)
15 6K297 Timing chain guide
16 N804958 Bolt (2 req'd)
17 6L253 Timing chain tensioner arm
18 6306 Crankshaft sprocket
19 12A227 Ignition pulse ring
20 3A696 Power steering pump
21 N806176 Bolt (4 req'd)
22 3R801 Gasket
23 3A696 Power steering pump pulley
24 W706508 Stud
25 N806177 Bolt (8 req'd)
26 N808586 Stud
27 N806300 Stud (4 req'd)
28 6700 Crankshaft front seal
29 N806155 Bolt
30 6C315 Crankshaft position sensor
31 W706560 Stud
32 6C086 Engine front cover
33 N806165 Washer
34 N806139 Bolt
35 19A216 Belt Idler Pulley
36 6316 Crankshaft pulley Klj . 10 ba
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IN-
VEHICLE REPAIR
Valve Cover RH
Removal 1. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
2. Drain the cooling system. For additional information, refer to Section 303 - 03A .
3. Recover the refrigerant. For additional information, refer to Section 412 - 00 .
4. Remove the air cleaner outlet tube. For additional information, refer to Section 303 - 12 .
5. Remove the RH ignition coil cover bolts and the cover.
6. Disconnect the ignition coil electrical connectors.
SECTION 303-
01D: Engine — Mach I 4.6L (4V) 2003 Mustang Workshop Manual Material
Item Specification
Metal Surface Cleaner
F4AZ-
19A536- RA or equivalent WSE-
M5B392-
A Silicone Gasket and Sealant
F7AZ-
19554- EA or equivalent WSE-
M4G323-
A4 PAG Refrigerant Compressor
Oil
F7AZ-
19589- DA (Motorcraft
YN- 12-C) or equivalent WSH-
M1C231-
B Klj . 1 ba
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7. Remove the ignition coils.
8. Remove the throttle body. For additional information, refer to Section 303
- 04D .
9. Disconnect the fuel tube spring lock coupling. For additional information, refer to Section 310 -
00 .
10. Disconnect the heater hose.
11. Disconnect the A/C suction tube at the accumulator.
12. Disconnect and remove the A/C suction tube. Klj . 2 ba
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10.
NOTE: Lubricate O- ring with clean PAG oil or equivalent.
Connect the A/C suction tube to the accumulator.
11. Connect the heater hose.
12. Install the throttle body. For additional information, refer to Section 303 - 04D .
13. Connect the fuel tube spring lock coupling. For additional information, refer to Section 310 - 00 .
14. Install the RH ignition coils.
15. Connect the RH ignition coil electrical connectors. Klj . 8 ba
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16. Install the RH ignition coil cover and the two bolts.
17. Install the air cleaner outlet tube. For additional information, refer to
Section 303 - 12 .
18. Connect the battery ground cable. For additional information, refer to Section 414 - 01 .
19. Fill the cooling system. For additional information, refer to Section 303 - 03A .
20. Recharge the A/C system. For additional information, refer to Section 412 - 00 . Klj . 9 ba
92003 Mustang Workshop Manual
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