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
WARNING: To reduce the risk of serious personal injury, read and follow all warnings, cautions and notes at the beginning of the removal procedure. Vehicles receiving a new clockspring 1. NOTE: A new clockspring is supplied in a centralized position a ...

Steering Column (Description and Operation)
  NOTE: All fasteners are important because they can affect the performance of vital parts and systems. Incorrect installation of the fasteners can result in major repair expenses. They must be installed new with fasteners of the same part number ...

Installation
1. CAUTION: Make sure the hardened washer is installed between the lower suspension arm and bushing and the shock absorber. Failure to do so can result in damage and failure of the lower suspension arm and bushing. NOTE: The toe link bolt and nuts are of a ...