wheel size FORD MUSTANG 2003 Workshop Manual

information, REFER to
Section 205
- 00 .
REPAIR as necessary.
z Transmission
rumble/growl— noise at
all speeds in forward
gears, more
pronounced in a heavy
acceleration condition z
Damaged or worn
transmission
bearing or gears
(high mileage
vehicles). z
CHECK transmission
fluid for excessive
metal particles.
REPAIR as necessary.
REFER to Section 308 -
03A for T50D
transmissions or
Section 308 - 03B for
TR3650 transmissions.
z Transfer case whine—
noise at all ranges z
Incorrect fluid level
or fluid quality. z
CHECK that the
transfer case is filled to
the correct level and
with the specified fluid.
REFER to Section 308 -
03A for T50D
transmissions or
Section 308 - 03B for
TR3650 transmissions.
z Worn oil pump. zDISASSEMBLE the
transfer case. CHECK
the oil pump for wear or
damage. REPAIR as
necessary.
z Under- inflated or
oversized tires. z
CONFIRM that the tires
and wheels are correct
for the vehicle. CHECK
that the tire inflation
pressures are correct.
z Transfer case
growl/rumble— noise at
all ranges (A small
amount of planetary
noise can be heard
when the transfer case
is operated in low
range.) z
Damaged or worn
bearings or
planetary gear. z
DISASSEMBLE the
transfer case. CHECK
the bearings or
planetary gear for wear
or damage. REPAIR as
necessary.
z Transfer case
scraping/grating—
noise at all ranges z
Excessively
stretched drive
chain hitting the
case. z
DISASSEMBLE the
transfer case. CHECK
the drive chain for wear
or damage. REPAIR as
necessary.
z Transfer case
howl/hum— noise at all
ranges or high range
only z
Worn or damaged
sun (input) gear,
clutch pack
(intermediate) gear
or output shaft gear. z
DISASSEMBLE the
transfer case. CHECK
the gears for wear or
damage. REPAIR as
necessary.
z Transfer case
howl/hum— noise at
low range only z
Worn or damaged
intermediate gear
and sliding gears
(clutch pack). z
DISASSEMBLE the
transfer case. CHECK
the gears for wear or
damage. REPAIR as
necessary.
z Transfer case
vibration— vibration felt
with vehicle in 4WD z
Transfer case
mounting.
z Driveshaft out of
balance.
z Excessive pinion z
Go To Pinpoint Test M . Klj . 44 ba
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DIAGNOSIS AND TESTING
Suspension System
Inspection and Verification
1. Road test. zVerify the customer's concern by performing a road test on a smooth road.
2. Inspect tires. zCheck the tire pressure with all normal loads in the vehicle and the tires cold. For
additional information, refer to the vehicle certification (VC) label.
z Verify that all tires are sized to specification.
z Inspect the tires for incorrect wear and damage.
3. Inspect chassis and underbody. zRemove any excessive accumulation of mud, dirt or road deposits from the chassis and
underbody.
4. Inspect for aftermarket equipment. zCheck for aftermarket changes to the steering, suspension, wheel and tire components
(such as competition, heavy duty, etc.) The specifications shown in this manual do not
apply to vehicles equipped with aftermarket equipment.
5. Inspect shock absorbers. All vehicles are equipped with gas- pressurized hydraulic shock absorbers. These shock
absorbers are not adjustable or refillable and cannot be repaired.
zOil Leak: A light film of oil (weepage) on the upper portion of the shock absorber is
permissible and is a result or correct shock lubrication. Weepage is a condition in which a
film of oil accumulates on the thin tube (body) and is normally noticed due to the
collection of dust in this area. If shock absorbers exhibit this weepage condition, they are
functional units and new shock absorbers should not be installed. Leakage is a condition
in which the entire shock absorber body is covered with oil and the oil will drip from the
shock absorber onto the pavement. If condition exists:
„Make sure fluid observed is not from sources other than the shock absorber.
„ Install a new shock absorber, if necessary.
z Vehicle Sag: Many times new shock absorbers are installed in an effort to solve a vehicle
sag concern. Shock absorbers by design are hydraulic damping units only and, unlike
suspension springs, do not support any suspension loads. Therefore, installing a new
shock absorber will not correct a vehicle sag concern.
z Installment in Pairs: In the past it was recommended that new shock absorbers be
installed in pairs if one unit became unrepairable. New shock absorbers no longer need
to be installed in pairs when only one unit is not repairable.
SECTION 204-
00: Suspension System — General Information 2003 Mustang Workshop Manual Visual Inspection Chart
Mechanical Klj . 1 ba
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DESCRIPTION AND OPERATION
Safety Precautions
WARNING: Never run the engine with one wheel off the ground, for example, when
changing a tire. The wheel(s) resting on the ground could cause the vehicle to move.
WARNING: The tire and wheel must always be correctly matched. It is very important to
determine the size of each component before any assembly operations commence. Failure to
adhere to these instructions can result in an explosive separation and cause serious bodily
injury or death.
WARNING: Aftermarket aerosol tire sealants are extremely flammable. Always question
the customer to make sure these products have not been used.
WARNING: Aftermarket wheel assemblies may not be compatible with the vehicle. Use of
incompatible wheel assemblies can result in equipment failure and possible injury. Use only
approved wheel assemblies.
WARNING: Use only wheels and wheel nuts that have been designed for current model
year Ford trucks. Aftermarket wheels or wheel nuts may not fit or function correctly, and can
cause personal injury or damage the vehicle.
WARNING: Always wear safety goggles or a face shield when performing any work with
tire and wheel assemblies.
CAUTION: Do not clean aluminum wheels with steel wool, abrasive- type cleaners or
strong detergents. Use Custom Bright Metal Cleaner 8A-19522- A or equivalent meeting Ford
specifications ESR- M5B194-B.
CAUTION: Reduce the air pressure as much as possible by pushing the valve core
plunger in prior to removing the valve core. Avoid working in a position in which the face or
body is directly over a tire in which there is pressure.
When performing any inspection or repair procedures on wheels (1007/1015) and tires, follow the
preceding safety precautions. SECTION 204-
04: Wheels and Tires 2003 Mustang Workshop Manual Klj . 1 ba
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DIAGNOSIS AND TESTING
Wheels And Tires
Inspection and Verification
WARNING: A vehicle equipped with a Traction- Lok® differential will always have both
wheels driving. If, while the vehicle is being serviced, only one wheel is raised off the ground
and the rear axle is driven by the engine, the wheel on the ground could drive the vehicle off
the stand or jack. Be sure both rear wheels are off the ground.
WARNING: Never run the engine with one wheel off the ground, for example, when
changing a tire. The wheel(s) resting on the ground could cause the vehicle to move.
WARNING: Do not balance the wheels and tires while they are mounted on the vehicle.
Possible tire disintegration or differential failure could result, causing personal injury and
extensive component damage. Use off- vehicle wheel and tire balancer only.
Be sure to follow the warnings when carrying out inspection and verification.
Road Test
Verify the customer concern by carrying out a road test on a smooth road. If any vibrations are
apparent, refer to Section 100 - 04 .
To maximize tire performance, inspect for signs of incorrect inflation and uneven wear, which may
indicate a need for balancing, rotation, or front suspension alignment.
Correct tire pressure and driving techniques have an important influence on tire life. Heavy cornering,
excessively rapid acceleration and unnecessary sharp braking increases tire wear.
Replacement tires must follow the recommended:
ztire sizes.
z speed rating.
z load range.
z tire construction type.
Use of any other tire size or type can seriously affect:
zride.
z handling.
z speedometer/odometer calibration.
z vehicle ground clearance.
z tire clearance between the body and chassis.
SECTION 204-
04: Wheels and Tires 2003 Mustang Workshop Manual Klj . 1 ba
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z
wheel bearing life.
z brake cooling.
New wheels need to be installed when vehicle's wheels:
zare bent.
z are cracked.
z are dented.
z are heavily corroded.
z are leaking.
z have elongated wheel hub bolt holes.
z have excessive lateral or radial runout.
Wheel and tire assemblies are attached by six wheel nuts.
It is mandatory to use only the tire sizes recommended on the tire chart attached to the vehicle. Larger
or smaller tires can damage the vehicle, affect durability, and require changing the speedometer
calibration. Make sure wheel size and offsets match those recommended for the tire in use. 1. Inspect for signs of uneven wear that may indicate a need for balancing, rotation, front suspension alignment, damaged tie- rod, or steering components.
2. Check tires for: zcuts.
z stone bruises.
z abrasions
z blisters.
z embedded objects.
3. Tread wear indicators are molded into the bottom of the tread grooves. Install a new tire when the indicator bands become visible.
Symptom Chart Symptom Chart Condition
Possible Sources Action
z Tires show
excess wear on
edge of tread z
Underinflated tires. zADJUST air pressure
in tires.
z Vehicle overloaded. zRETURN vehicle.
NOTIFY customer of
overload condition.
z High- speed cornering. zRETURN vehicle.
NOTIFY customer of
cause of condition.
z Incorrect ride height. zSET ride height.
z Incorrect wheel alignment. zSET alignment to
specification. REFER Klj . 2 ba
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PINPOINT TEST H: DTC C1233 (LF), C1234 (RF), C1235 (RR), C1236
(LR), ANTI-
LOCK BRAKE SENSOR INPUT SIGNAL MISSING Test Step Result / Action to Take
G1 CHECK THE VEHICLE
COMPONENTS z
Check for correct wheel and tire
size, front- to-rear and side- to-
side.
z Check for excessive bearing
end play.
z Check the anti- lock brake
sensor indicator for a
deformation or missing teeth.
z Are the conditions OK? Yes
GO to
G2 .
No
REPAIR as necessary. CLEAR the DTCs. REPEAT the
self- test. G2 TEST DRIVE THE VEHICLE
z
Enter the following diagnostic
mode on the diagnostic tool:
CLEAR the DTCs.
z Key in OFF position.
z Key in ON position.
z Test drive the vehicle over 24
kph (15 mph).
z Enter the following diagnostic
mode on the diagnostic tool:
Retrieve DTCs.
z Is DTC C1222 retrieved? Yes
INSTALL a new anti-
lock brake control module; REFER
to Module . REPEAT the self-
test.
No
If another DTC is retrieved, GO to the Anti- Lock Brake
Control Module Diagnostic Trouble Code (DTC) index.
If no DTCs are retrieved, the system is OK. Test Step Result / Action to Take
H1 CHECK THE SUSPECT ANTI-
LOCK BRAKE
SENSOR z
Check the suspect anti- lock brake sensor
mounting.
z Check the suspect anti- lock brake sensor for
excessive dirt build up, obstructions, and
damage.
z Is the suspect anti- lock brake sensor and
mounting OK? Yes
GO to
H2 .
No
REPAIR as necessary. CLEAR the
DTCs. REPEAT the self-test. H2 CHECK THE SUSPECT ANTI-
LOCK BRAKE
SENSOR INDICATOR z
Check the suspect anti- lock brake sensor
indicator for corrosion, nicks, bridged teeth,
damaged teeth, correct mounting, and alignment
with the anti- lock brake sensor.
z Check the air gap and bearing end play.
z Is the suspect anti- lock brake sensor
indicator OK? Yes
GO to
H3 .
No
INSTALL a new anti- lock brake sensor
indicator; REFER to Sensor — Front or
Sensor — Rear . CLEAR the DTCs.
REPEAT the self- test. H3 CHECK THE ANTI-
LOCK BRAKE SENSOR
OUTPUT z
Key in ON position.
z Enter the following diagnostic mode on the
diagnostic tool: CLEAR the DTCs..
z Key in OFF position.
z Key in ON position. Yes
INSTALL a new anti-
lock brake control
module; REFER to Module . REPEAT
the self- test. Klj . 12 ba
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PINPOINT TEST G: DTC C1222, ANTI-
LOCK BRAKE SENSOR
MISMATCH z
Are the resistances less than 5 ohms? (RR)
C1175
(LR) C141 Pin 22 C320 Pin 2 496 (OG)
C1175
(LR) C141 Pin 23 C320 Pin 1 499
(GY/BK) F5 CHECK THE ANTI-
LOCK BRAKE SENSOR z
Measure the resistance between suspect anti- lock
brake sensor pin 1 (component side) and suspect
anti- lock brake sensor pin 2 (component side).
z Is the resistance between 1280 and 1920 (front)
or 1830 and 2760 (rear) ohms? Yes
INSTALL a new anti-
lock brake
control module; REFER to Module .
REPEAT the self- test.
No
INSTALL a new anti- lock brake
sensor; REFER to Sensor — Front or
Sensor — Rear . CLEAR the DTCs.
REPEAT the self- test. Test Step Result / Action to Take
G1 CHECK THE VEHICLE
COMPONENTS z
Check for correct wheel and tire
size, front- to-rear and side- to-
side.
z Check for excessive bearing end
play.
z Check the anti- lock brake sensor
indicator for a bent sensor ring or
missing teeth.
z Are the conditions OK? Yes
GO to
G2 .
No
REPAIR as necessary. CLEAR the DTCs. REPEAT
the self- test. G2 TEST DRIVE THE VEHICLE
z
Enter the following diagnostic Yes Klj . 13 ba
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1. Verify the customer concern by operating the steering system.
2. Inspect Tires
zCheck the tire pressure. Refer to the Vehicle Certification (VC) label.
z Verify that all tires are sized to specification.
z Check the tires for damage or uneven wear.
3. Belt and Tensioner Check zRefer to Section 303 - 05 for diagnosis and testing of the accessory drive system.
4. Fluid Level Check zVerify that the power steering fluid level is within the appropriate indicated range, hot for
the 3.8L engine and cold for the 4.6L engine. Add Motorcraft MERCON® Multi- Purpose
ATF XT -2-QDX or MERCON® equivalent.
5. Air Bleeding zVerify that there is no air in the power steering system. Run the engine (6007) until it
reaches normal operating temperature. Turn the steering wheel to the left and right
several times without hitting the stops. If any air bubbles are present, refer to Purging —
CII Power Steering Pump or
Purging — CIII Power Steering Pump in this section.
External Leak Check — Typical Power Rack-and-Pinion Steering Gear Klj . 2 ba
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