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:

Technical specifications
Wheel Lug Nut Torque Specifications WARNING: When a wheel is installed, always remove any corrosion, dirt or foreign materials present on the mounting surfaces of the wheel or the surface of the wheel hub, brake drum or brake disc that contacts the wheel. Make ...

Air Bag Disposal - Passenger, Undeployed, Scrapped Vehicle
Remote Deployment WARNING: Always wear safety glasses when repairing an air bag supplemental restraint system (SRS) vehicle and when handling an air bag module or safety belt retractor/pretensioner assembly. This will reduce the risk of injury in t ...

Glass, Frames and Mechanisms (Diagnosis and Testing)
Refer to Wiring Diagrams Cell 100 , Power Windows for schematic and connector information. Refer to Wiring Diagrams Cell 56 , Rear Window Defrost for schematic and connector information. Special Tool(s) Worldwide Diagnostic System (WDS) 4 ...