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:

Child seat positioning
WARNING: Airbags can kill or injure a child in a child seat. Never place a rear-facing child seat in front of an active airbag. If you must use a forward-facing child seat in the front seat, move the vehicle seat upon which the child seat is installed all th ...

Evaporative Emissions (Diagnosis and Testing)
Special Tool(s) Evaporative Emission System Leak Tester 310-F007 (134-00056) or equivalent Worldwide Diagnostic System (WDS) 418-F224, New Generation STAR (NGS) Tester 418-F052, or equivalent scan tool Evaporative Em ...

Catalyst Monitor Sensor
Special Tool(s) Socket, Exhaust Gas Oxygen Sensor 303-476 (T94P-9472-A) Material Item Specification Penetrating and Lock Lubricant or equivalent E8AZ-19A501- B Removal and Installation 1. Disconnect the battery ground ...