2003 FORD MUSTANG tire pressure

Poor returnability and sticky steering is used to describe the poor return of the steering wheel to center
after a turn or the steering correction is completed.
Shimmy
Shimmy, as observed by the driver, is large, consistent, rotational oscillations of the steering wheel
resulting from large, side-
to-side (lateral) tire/wheel movements.
Shimmy is usually experienced near 64 km/h (40 mph), and can begin or be amplified when the tire
contacts pot holes or irregularities in the road surface.
Wander
Wander is the tendency of the vehicle to require frequent, random left and right steering wheel
corrections to maintain a straight path down a level road.
Symptom Chart
Symptom Chart Condition
Possible Sources Action
z Hard Steering or
Lack of Assist z
Seized lower steering
column shaft U- joints. z
INSTALL a new lower
steering column shaft.
REFER to Section 211 - 04 .
z Damaged, fractured
steering column
bearing(s). z
REPAIR the steering
column. REFER to
Section 211 - 04 .
z Power steering pump. zGO to Pump Flow and
Pressure Test
Component Test in
this section.
z Suspension
components. z
REFER to Section 204 - 00 for suspension
system diagnosis and
testing.
z Steering gear internal
leakage. z
GO to Pump Flow and
Pressure Test
Component Test in
this section.
z Excessive Steering
Pump Noise z
Power steering pump. zGO to Pump Flow and
Pressure Test
Component Test in
this section.
z Excessive Steering
Wheel Play z
Damaged, loose, or
worn tie- rod end
(3A130). z
GO to the Steering
Linkage Component
Test.
z Loose, worn or
damaged front wheel
spindle tie- rod (3280). z
GO to the Tie- Rod
Articulation Torque
Component Test.
z Damaged/worn
steering gear. z
INSTALL a new
steering gear. REFER
to Section 211 - 02 .
z Loose, worn or
damaged steering z
INSTALL new
steering column Klj . 5 ba
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Component Tests
Steering Linkage
1. NOTE: Excessive vertical motion of the studs relative to the sockets may indicate excessive
wear.
With the parking brake applied, perform the following:
zHave an assistant rotate the steering wheel back and forth 360 degrees and watch for
relative motion of the studs in the tie- rod end ball sockets.
z Watch for loose steering gear mounting.
2. Another method is to raise the front wheels (1007) off the ground, grasp the wheel at the front and rear and watch for excessive play or binding in the joints while trying to steer the wheels.
3. Install new steering components as necessary. For additional information, refer to the appropriate Group 2 steering section.
Turning Effort Test
NOTE: Make sure that the front wheels are properly aligned and the tire pressure is correct before
checking the effort.
1. Park the vehicle on dry concrete and set the parking brake.
2. Insert a thermometer into the power steering pump reservoir.
3. CAUTION: Do not hold the steering wheel against the stops for more than three to
five seconds at a time. Damage to the power steering pump will occur.
Idle the engine for two to three minutes. Turn the steering wheel from stop- to-stop several times
to warm the fluid to 50- 60°C (122-140°F).
4. With the engine running, attach special tool 211- 034 (T74P-3504-Y) to the rim of the steering
wheel.
5. Measure the pull required to turn the steering wheel one complete revolution in each direction. Refer to Steering Wheel Turning Effort under General Specifications in this section.
Pump Flow and Pressure Test WARNING: Do not touch the flowmeter during the test procedure, or severe burns and
serious injury may occur.
1. CAUTION: Make sure that the connection point will not interfere with any of the
engine accessory drive components or drive belts.
Install special tool 211- F001 (014-00207) at the high pressure port of the power steering pump.
Make sure the power steering analyzer gate valve is fully open. Klj . 8 ba
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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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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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DIAGNOSIS AND TESTING
Transmission Cooling
Inspection and Verification
WARNING: Never remove the radiator cap under any conditions while the engine is
operating. Failure to follow these instructions could result in personal injury and/or damage to
the cooling system or engine. To avoid having scalding hot coolant or steam blow out of the
radiator, use extreme care when removing the radiator cap from a hot radiator. Wait until the
engine has cooled, then wrap a thick cloth around the radiator cap and turn it slowly to the first
stop. Step back while the pressure is released from the cooling system. When you are certain
all the pressure has been released, press down on the radiator cap (with a cloth), turn and
remove.
The transmission fluid cooler is integral to the radiator (8005). Whenever leaks or damage to the
radiator are found, install an entire new radiator. For additional information, refer to Section 303 - 03A or
Section 303 - 03B .
Symptom Chart SECTION 307-
02: Transaxle/Transmission Cooling 2003 Mustang Workshop Manual SYMPTOM CHART
Condition
Possible Sources Action
z Transmission
Overheating z
Damaged radiator. zREPAIR or install a new
radiator. For additional
information, REFER to
Section 303 - 03A or
Section 303 - 03B .
z System leaks. zINSPECT for leaks. REPAIR
as necessary.
z Incorrect fluid level. zADJUST to proper level.
z Fluid condition. zINSPECT according to
instructions under Fluid
Condition Check. REFER to
Section 307 - 01 .
z Damaged, blocked,
reversed, leaking or
restricted cooler lines
or cooler tubes. z
INSPECT cooler lines and
tubes. REPAIR or flush as
necessary.
z Engine concerns
causing transmission
to overheat. z
INSPECT engine cooling
system. For additional
information, REFER to
Section 303 - 03A or
Section 303 - 03B .
z Excessive towing
loads. z
CHECK gross vehicle weight.
z Incorrect idle or
performance. z
REFER to the Powertrain
Control/Emissions Diagnosis
(PC/ED) manual. Klj . 1 ba
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21. Remove the reverse gear synchronizer snap ring.
22. Remove the reverse shift fork snap ring.
23. Remove the reverse shift fork, the reverse synchronizer and the thrust washer as an assembly.
24. Inspect the synchronizer for the following:
zCheck for worn, nicked or broken teeth. Install a new synchronizer as necessary.
z Check keys for wear or distortion. Check the springs for distortion. Install a new
synchronizer as necessary.
25. Inspect the synchronizer blocking ring for the following: zCheck for wear or damage. Install a new synchronizer blocking ring as necessary.
z Check the clearance between the synchronizer blocking ring and the gear.
„Position the blocking ring onto the gear. Make sure the correct blocking ring is
measured with the correct gear and that the blocking ring is fully seated on the
gear.
„ Insert a feeler gauge and measure the clearance, while applying pressure and
rotating the blocking ring. The measurement should be the same around the entire
circumference. If the clearance is less than 0.75 mm (0.030 in), install new Klj . 7 ba
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9. Remove the third gear needle bearing.
zInspect the needle bearing for wear or damage. Install a new needle bearing as
necessary.
10. NOTE: Install the special tool with the flat side facing the bearing.
Using the special tool, press the output shaft front bearing from the output shaft.
11. Inspect the synchronizers. zCheck for worn, nicked or broken teeth. Install a new synchronizer as necessary.
z Check keys for wear or distortion. Install a new synchronizer as necessary.
z Check springs for distortion. Install a new synchronizer as necessary.
12. Inspect the synchronizer blocking rings. zCheck for wear or damage. Install new synchronizer blocking rings as necessary.
z Check the clearance between the synchronizer blocking ring and the gear.
„Position the blocking ring onto the gear. Make sure the correct blocking ring is
measured with the correct gear and that the blocking ring is fully seated on the
gear.
„ Insert a feeler gauge and measure the clearance, while applying pressure and
rotating the blocking ring. The measurement should be the same around the entire
circumference. If the clearance is less than 0.38 mm (0.015 in), install new
blocking rings. Klj . 6 ba
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gear.
„ Insert a feeler gauge and measure the clearance, while applying pressure and
rotating the blocking ring. The measurement should be the same around the entire
circumference. If the clearance is less than 0.38 mm (0.015 in), install new
blocking rings.
16. Using the special tools, install the countershaft rear bearing.
17. Using the special tools, install the countershaft front bearing. Klj . 6 ba
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