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:

Axle Housing
Removal and Installation 1. CAUTION: The vehicle must be on level ground and at curb height. Mark the rear shock absorbers relative to their protective sleeve.  During installation, raise the suspension to this reference mark before tightening the s ...

Driveline Angle Inspection
Special Tool(s) Anglemaster II Driveline Inclinometer 164-R2402 or equivalent NOTE: An incorrect driveline angle can cause a vibration or shudder. 1. Check the vehicle for evidence or overload or sagging. Check for specified air pressures in ...

Convertible Top (Diagnosis and Testing)
Refer to Wiring Diagrams Cell 103 , for schematic and connector information. Special Tool(s) 73 III Automotive Meter 105-R0057 or equivalent Principles of Operation The convertible top will only operate with the parking brake engaged ...