2003 FORD MUSTANG lock

The brake type codes are:
z2 — Four- wheel disc with anti- lock brake system (ABS)
z 3 — Traction control
z 5 — Four- wheel disc with anti- lock brake system (ABS) and traction control
Interior Trim Codes Klj . 8 ba
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The radio type codes are:
z2 — Premium electronic AM/FM stereo with compact disc (CD) player and clock
z 9 — CDX6+, AM/FM stereo with 6- disc compact disc (CD) changer and MACH 460 subwoofer
sound system
z Z — AM/FM stereo, dual media (MP3) with compact disc (CD) player
Axle Ratio Codes Klj . 10 ba
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The axle ratio is:
zX5 — 3.8L, non- ABS, 3.27 ratio
z Z5 — 3.8L, ABS, 3.27 ratio
z ME — 4.6L, Mach One, 3.55 ratio
z LE — 4.6L, VX, 3.27 ratio
z TE — 3.55 locker (with independent rear suspension) — Cobra
Transmission Codes
The transmission code is:
z5— Five- speed manual (T5OD/TR3150) — base
z B—Six- speed manual (T56), Cobra
z K—Five-speed manual (TR3650), GT
z U— Four- speed automatic (AODE/4R70W) Spring Codes Klj . 11 ba
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z
Engine oil fluid level.
z Windshield washer solvent fluid level.
z Check and drain fuel/water separator.
Six Month Checks
Check each of the following items at least every six months:
zLap/shoulder belts and seat latches for wear and function.
z Spare tire air pressure.
z Power steering fluid level.
z Parking brake for correct operation.
z Safety warning lamps (brake, ABS, air bag, safety belt) for correct operation.
z Coolant system fluid level and correct strength.
z Battery connections. Clean if necessary.
z Clutch fluid level, if equipped.
z Windshield washer spray, wiper operation, clean all wiper blades.
z Lubricate all hinges, latches and outside locks. Inspect for correct operation.
z Lubricate door rubber weatherstrips. Inspect for excessive wear.
z Clean body and door drain holes. Inspect for clogs and obstructions.
Special Checks (Mustang Only)
Carry out the following check every 8,000 km (5,000 miles):
zAdjust clutch by lifting pedal (manual transmission Mustang only, as described in owner guide).
Normal Schedule
The following checks or procedures should be carried out for all cars, minivans, light trucks, sport
utilities, vans, 4x4s, natural gas and propane vehicles.
8,000 Km (5,000 Miles) zChange engine oil and install a new oil filter.
z Rotate tires and inspect for wear.
16,000 Km (10,000 Miles)
zChange engine oil and install a new oil filter.
z Inspect tires for wear. Rotation recommended for optimal tire life.
24,000 Km (15,000 Miles)
zChange engine oil and install a new oil filter. Klj . 3 ba
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DESCRIPTION AND OPERATION
Noise, Vibration and Harshness (NVH)
Noise is any undesirable sound, usually unpleasant in nature. Vibration is any motion, shaking or
trembling, that can be felt or seen when an object moves back and forth or up and down. Harshness is
a ride quality issue where the vehicle's response to the road transmits sharply to the customer.
Harshness normally describes a firmer than usual response from the suspension system. Noise,
vibration and harshness (NVH) is a term used to describe these conditions, which result in varying
degrees of dissatisfaction. Although, a certain level of NVH caused by road and environmental
conditions is normal. This section is designed to aid in the diagnosis, testing and repair of NVH
concerns.
Acceptable Noise, Vibration and Harshness
All internal combustion engines and drivelines produce some noise and vibration; operating in a real
world environment adds noise that is not subject to control. Vibration isolators, mufflers and dampers
reduce these to acceptable levels. A driver who is unfamiliar with a vehicle can think that some sounds
are abnormal when actually the sounds are normal for the vehicle type. For example, Traction-
Lok®
differentials produce a slight noise on slow turns after extended highway driving. This is acceptable
and has no detrimental effect on the locking axle function. As a technician, it is very important to be
familiar with vehicle features and know how they relate to NVH concerns and their diagnosis. For
example, if the vehicle has automatic overdrive, it is important to test drive the vehicle both in and out
of overdrive mode.
Diagnostic Theory
The shortest route to an accurate diagnosis results from:
zsystem knowledge, including comparison with a known good system.
z system history, including repair history and usage patterns.
z condition history, especially any relationship to repairs or sudden change.
z knowledge of possible sources.
z using a systematic diagnostic method that divides the system into related areas.
The diagnosis and correction of noise, vibration and harshness concerns requires:
za road or system test to determine the exact nature of the concern.
z an analysis of the possible causes.
z testing to verify the cause.
z repairing any concerns found.
z a road test or system test to make sure the concern has been corrected or brought back to
within an acceptable range.
Glossary of Terms SECTION 100-
04: Noise, Vibration and Harshness 2003 Mustang Workshop Manual Klj . 1 ba
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A rhythmic tap, similar to a clock noise.
Tip-
In Moan
A light moaning noise heard during light vehicle acceleration, usually between 40- 100 km/h (25-65
mph).
TIR
The acronym for total indicated runout is TIR.
Tire Deflection
The change in tire diameter in the area where the tire contacts the ground.
Tire Flat Spots
A condition commonly caused by letting the vehicle stand while the tires cool off. This condition can be
corrected by driving the vehicle until the tires are warm. Also, irregular tire wear patterns in the tire
tread resulting from wheel- locked skids.
Tire Force Vibration
A tire vibration caused by variations in the construction of the tire that is noticeable when the tire
rotates against the pavement. This condition can be present on perfectly round tires because of
variations in the inner tire construction. This condition can occur at wheel rotation frequency or twice
rotation frequency.
Transient
A noise or vibration that is momentary, a short duration.
Two- Plane Balance
Radial and lateral balance.
Vibration
Any motion, shaking or trembling, that can be felt or seen when an object moves back and forth or up
and down.
Whine
A constant, high- pitched noise. Also described as a screech.
Whistle
High- pitched noise (above 500 Hz) with a very narrow frequency band. Examples of whistle noises are
a turbocharger or airflow around an antenna.
Wind Noise
Any noise caused by air movement in, out or around the vehicle. Klj . 10 ba
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and evaporative emission noises. The Ultrasonic Leak Detector includes a multi-
directional transmitter
(operating in the ultrasonic range) and a hand- held detector. The transmitter is placed inside the
vehicle. On the outside of the vehicle, the hand- held detector is used to sweep the area of the
suspected leak. As the source of the leak is approached, a beeping sound is produced which
increases in both speed and frequency.
Squeak and Rattle Repair Kit
The squeak and rattle repair kit (Rotunda tool number 164- R4900) contains lubricants and self-
adhesive materials that can be used to eliminate interior and exterior squeaks and rattles. The kit
consists of the following materials:
zPVC (soft foam) tape
z Urethane (hard foam) tape
z Flocked (black fuzzy) tape
z UHMW (frosted) tape
z Squeak and rattle oil tube
z Squeak and rattle grease tube
Tracing Powder
Tracing powder is used to check both the uniformity of contact and the tension of a seal against its
sealing surface. These tests are usually done when a suspected air leak/noise appears to originate
from the seal area or during the alignment and adjustment of a component to a weatherstrip. Tracing
powder can be ordered from Crest Industries as ATR Leak Trace. Carry out the tracing powder test as
follows:
a. Clean the weatherstrip.
b. Spray the tracing powder on the mating surface only. c. Close the door completely. Do not slam the door.
d. Open the door. An imprint is made where the weatherstrip contacted the mating surface seal. Gaps or a faint imprint will show where there is poor contact with the weatherstrip. Klj . 13 ba
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z
Drive the vehicle over a bump or rough surface one wheel at a time to determine if the noise is
coming from the front or the back and the left or the right side of the vehicle.
z Proceed as necessary.
Neutral Engine Run- Up (NERU) Test
To carry out this test, proceed as follows:
zInstall a tachometer.
z Increase the engine rpm up from an idle to approximately 4000 rpm while in PARK on front
wheel drive vehicles with automatic transmissions, or NEUTRAL for all other vehicles. Note the
engine rpm and, if possible, determine the vibration frequency.
z Attempt to identify what part of the vehicle the concern is coming from.
z Attempt to identify the source of the concern.
z Proceed as necessary.
Drive Engine Run- Up (DERU) Load Test
To carry out this test, proceed as follows:
z WARNING: Block the front and rear wheels, and apply the parking brake and the
service brake, or injury to personnel can result.
CAUTION: Do not carry out the Engine Load Test for more than five seconds or
damage to the transmission or transaxle can result.
Block the front and rear wheels.
z Apply the parking brake and the service brake.
z Install a tachometer.
z Shift the transmission into DRIVE, and increase and decrease the engine rpm between an idle
to approximately 2000 rpm. Note the engine rpm and, if possible, determine the vibration
frequency.
z Repeat the test in REVERSE.
z If the vibration/noise is duplicated when carrying out this test, inspect the engine and
transmission or transaxle mounts.
z If the concern is definitely engine speed- related, carry out the Engine Accessory Test to narrow
down the source.
z Proceed as necessary.
Engine Accessory Test
To carry out this test, proceed as follows:
z WARNING: Block the front and rear wheels, and apply the parking brake and the
service brake, or injury to personnel can result.
CAUTION: Limit engine running time to one minute or less with belts removed or
serious engine damage will result. Klj . 8 ba
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