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:

Engine (Assembly)
Special Tool(s) Guides, Connecting Rod 303-442 (T93P-6136-A) Installer, Crankshaft Rear Oil Seal 303-518 (T95P-6701-DH) Installer, Crankshaft Rear Oil Seal 303-516 (T95P-6701-BH) Installer, Crankshaft Re ...

Radiator
Material Item Specification Motorcraft Premium Gold Engine Coolant VC-7-A (in Oregon VC-7-B) (yellow color) WSS-M97B51- A1 Removal and Installation NOTE: Radiator removal and installation is similar for both 3.8L and 4.6L vehicles. ...

Axle information
Traction-Lokâ„¢ Axle (If Equipped) This axle provides added traction on slippery surfaces, particularly when one wheel is on a poor traction surface. Under normal conditions, the Traction-Lokâ„¢ axle functions like a standard rear axle. Extended use of other ...