Ford 2003 Mustang Workshop Manual page 2633

Release bearing rub will
disappear when the
clutch is engaged. In the
event that a bearing is
damaged, the noise is
more pronounced while
engaged in gear under
load or coast than in
NEUTRAL.
Noisy in forward gears
Gears clash when
shifting from one forward
gear to another
Transmission jumps out
of gear
Components
grounding out
on the
transmission.
Components
housing bolts.
Bearings or
gears.
Pilot bearing.
Gear teeth
and/or
synchronizer.
Engine idle
speed too high.
Transmission
range selector
lever boot.
Transmission-to-
engine mounting
bolts.
CHECK for screws,
bolts, etc., of body or
other components
grounding out.
CORRECT as
necessary.
CHECK the torque on
the transmission-to-
flywheel housing bolts
and the flywheel
housing-to-engine block
bolts. TIGHTEN the
bolts to specification.
REFER to Section 308-
01 .
INSPECT the bearings.
INSPECT the gears and
gear teeth for wear or
damage. INSTALL new
components as
necessary. REFER to
Section 308-01 .
CHECK for a binding
condition between the
input shaft and the
engine crankshaft pilot
bearing. INSTALL new
components as
necessary. REFER to
Section 308-01 .
REPAIR or INSTALL
new components as
necessary. REFER to
Section 308-03A or
Section 308-03B .
REFER to the
Powertrain
Control/Emissions
Diagnosis (PC/ED)
manual.
INSTALL a new boot if
exceptionally stiff.
REFER to Section 308-
03A or Section 308-
03B .
TIGHTEN the bolts to
specification.