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:

Crankshaft Pulley
Special Tool(s) Remover, Crankshaft Vibration Damper 303-009 (T58P-6316-D) Installer, Crankshaft Vibration Damper 303-102 (T74P-6316-B) Material Item Specification Silicone Gasket and Sealant F7AZ-19554-EA or eq ...

Pinion Seal
Special Tool(s) Installer, Drive Pinion Oil Seal 205-133 (T79P-4676-A) Removal 1. Remove the pinion flange (4851). For additional information, refer to Drive Pinion Flange in this section. 2. Force up the metal flange of the rear axle drive p ...

Synchronizers
Disassembly NOTE: This procedure applies to all synchronizer assemblies (7124). The synchronizers are slightly different in design. Notation is made where procedural differences occur. 1. On the third/fourth speed synchronizer and the fifth speed synchr ...