Ford Mustang (1999-2004) Service Manual: Gear Howl and Whine

Howling or whining of the ring gear and pinion is due to an incorrect gear pattern, gear damage or incorrect bearing preload.

Wheel Hub or Axle Flange Face Runout
NOTE: If the axle shaft assembly is removed, check runout of the shaft itself. The forged (unmachined) part of the shaft is allowed to have as much as 3.0 mm (0.120 inch) runout. This alone will not ...

Bearing Whine
Bearing whine is a high-pitched sound similar to a whistle. It is usually caused by worn/damaged pinion bearings, which are operating at driveshaft speed. Bearing noise occurs at all driving speeds. ...

Other materials:

Installation
1. Using the special tools, install the new intake valve stem seals. 2. Using the special tools, install the new exhaust valve stem seals. 3. Install the Valve Spring Compressor Spacer between the valve spring coils to protect the intake valve stem seal f ...

Compressor to Condenser Discharge Line - 4.6L
Material Item Specification PAG Refrigerant Compressor Oil (R-134a Systems) F7AZ-19589-DA (Motorcraft YN- 12-C) WSH-M1C231- B Removal and Installation NOTE: Installation of a new suction accumulator is not required when repairing the ...

Removal
CAUTION: Suspension fasteners are critical parts because they affect performance of vital components and systems and their failure can result in major service expense. A new part with the same part number must be installed if installation becomes necessary. ...