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:

Essential towing checks
Follow these guidelines for safe towing: • Do not tow a trailer until you drive your vehicle at least 1000 miles (1600 kilometers). • Consult your local motor vehicle laws for towing a trailer. • See the instructions included with towing accessories for ...

Navigation controls
Type 1 WARNING: Driving while distracted can result in loss of vehicle control, crash and injury. We strongly recommend that you use extreme caution when using any device that may take your focus off the road. Your primary responsibility is the safe operation ...

Engine Support Insulators
Special Tool(s) 3 Bar Engine Support Kit 303-F072 Engine Lift Bracket Set 303-D095 (D94L-6001-A) or equivalent ...