Ford 2003 Mustang Workshop Manual page 2640

Is the flywheel OK?
PINPOINT TEST F: HARD SHIFTING
F1 CHECK THE CLUTCH RELEASE CABLE
NOTE: Check the upper shift boot for twisting.
NOTE: Check the engine idle speed.
Inspect the clutch release cable for wear or damage. Make
sure the clutch release cable is correctly routed and that all
the fasteners are installed.
Are there any fasteners missing or is the cable worn,
damaged or incorrectly routed?
F2 CHECK THE CLUTCH PEDAL
Loosen the clutch pedal shaft nut.
Lift the clutch pedal to the most upward position.
While holding the clutch pedal in the most upward position,
tighten the nut.
Was the clutch pedal incorrectly adjusted?
F3 CHECK THE CLUTCH PEDAL QUADRANT
Pull up on the clutch pedal to the upstop. Pulling up on the
pedal ensures that the quadrant is free to rotate through it's
complete range of motion against the spring load of the
quadrant.
Is the clutch pedal quadrant binding?
F4 MEASURE THE CLUTCH RESERVE
NOTE: Do not check the clutch system after the road test.
Allow the vehicle to cool down before carrying out the clutch
reserve check. NOTE: Remove the floor mat, if equipped, to
allow the clutch pedal to travel to the downstop.
Install a cable tie to the lower clutch pedal, than attach a
tape measure to the cable tie.
TIGHTEN, RESURFACE or INSTALL a new
flywheel. REFER to
system for normal operation.
Test Step
Section 308-01 . TEST the
Result / Action to Take
Yes
REPAIR or INSTALL a new
clutch release cable as
necessary. TEST the
system for normal
operation.
No
GO to F2 .
Yes
VERIFY customer concern.
TEST the system for
normal operation.
No
GO to F3 .
Yes
INSTALL a new quadrant.
TEST the system for
normal operation.
No
GO to F4 .
Yes
INSTALL a new pressure
plate and clutch disc.
REINSTALL the
transmission. RECHECK
the clutch reserve. TEST
the system of normal
operation.
No
GO to F5 .