Ford 2003 Mustang Workshop Manual page 83

Power steering
pump swish noise
Power steering
pump whine noise
Power steering
pump clicking
(mechanical) noise
Power steering
pump clatter noise
Symptom Chart—Suspension Noise/Vibration
Condition
Squeak or grunt—noise
from the front suspension,
occurs more in cold
ambient temperatures.
More noticeable over
rough roads or when
turning
end surface of the
power steering pump
rotor.
Damaged or worn
power steering pump
rotor splines.
A crack on the inner
surface of the power
steering pump cam.
Interference between
the power steering
pump rotor and cam.
Damaged or worn
power steering pump
rotor and pressure
plates.
Power steering fluid
flow into the bypass
valve of the pump
valve housing with fluid
temperature below 54°
C (130°F).
Aerated fluid.
Damaged power
steering pump cam.
Damaged valve cover
O-ring seal.
Power steering pump
rotor slippers too long,
excessive rotor slipper-
to-slot clearance or
damaged or worn rotor
assembly.
Damaged corners on
the outside diameter or
the power steering
rotor or distorted rotor
slipper ring.
Possible Sources
Front stabilizer
bar insulators.
02 .
Acceptable condition.
PURGE the air from the
system. REFER to
Section 211-00 .
CHECK for a leak in the
system.
REPAIR or INSTALL a
new power steering
pump as necessary.
REFER to Section 211-
02 .
REPAIR or INSTALL a
new power steering
pump as necessary.
REFER to Section 211-
02 .
REPAIR or INSTALL a
new power steering
pump as necessary.
REFER to Section 211-
02 .
REPAIR or INSTALL a
new power steering
pump as necessary.
REFER to Section 211-
02 .
Action
Under these conditions,
the noise is acceptable.
CHECK TSBs.