Ford 2003 Mustang Workshop Manual page 68

from a dead stop
Howl—can occur at
various speeds and
driving conditions.
Affected by
acceleration and
deceleration
Chuckle—heard at
coast/deceleration.
Also described as a
knock
Knock—noise occurs
at various speeds.
Not affected by
acceleration or
deceleration
Scraping noise—a
continuous low
pitched noise starting
at low speeds
Driveline shudder—
occurs during
acceleration from a
slow speed or stop
Loose rear
spring U-bolts.
Incorrect ring
and pinion
contact,
incorrect
bearing preload
or gear damage.
Incorrect ring
and pinion
contact or by
damaged teeth
on the coast
side of the ring
and pinion.
Gear tooth
damage to the
drive side of the
ring and pinion.
Excessive axle
shaft end play.
(Vehicles with
integral axles).
Worn or
damaged pinion
bearings.
Rear drive axle
assembly
mispositioned.
INSPECT the rear
suspension. TIGHTEN the
U-bolt nuts to specification.
REFER to Section 204-02
CHECK the ring and pinion
and bearings for damage.
INSPECT the ring and
pinion wear pattern. REFER
to Checking Tooth Contact
Pattern and Condition of the
Ring and Pinion component
test in this section. ADJUST
or INSTALL new
components as necessary.
REFER to Section 205-02A
for Ford 7.5 rear axles or
Section 205-02B for Ford
8.8 integral axles.
CHECK the ring and pinion
for damage. INSPECT the
ring and pinion wear pattern.
REFER to Checking Tooth
Contact Pattern and
Condition of the Ring and
Pinion component test in
this section. ADJUST or
INSTALL new components
as necessary. REFER to
Section 205-02A for Ford
7.5 rear axles or Section
205-02B for Ford 8.8
integral axles.
CHECK the differential case
and ring and pinion for
damage. INSTALL new
components as necessary.
REFER to Section 205-02A
for Ford 7.5 rear axles or
Section 205-02B for Ford
8.8 integral axles.
CHECK the axle end play
using a dial indicator.
INSTALL a new axle shaft
or side gears as necessary.
REFER to Section 205-02A
for Ford 7.5 rear axles or
Section 205-02B for Ford
8.8 integral axles.
CHECK the pinion bearings.
INSTALL new pinion
bearings as necessary.
REFER to Section 205-02A
for Ford 7.5 rear axles or
Section 205-02B for Ford
8.8 integral axles.
CHECK the axle mounts
and the rear suspension for
damage or wear. REPAIR
as necessary.
.