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:

Axle Housing Bushing
Special Tool(s) Axle Suspension Bushing Set 204-S030 (T78P-5638-A) Removal CAUTION: Suspension fasteners are critical parts because they affect performance of vital components and systems and their failure can result in major service expense. ...

Acceleration Control (Diagnosis and Testing)
Inspection and Verification 1. Verify the customer's concern by operating the acceleration control system to duplicate the condition. 2. Inspect to determine if any of the following mechanical concerns apply: Visual Inspection Chart Mechanical ...

Side airbags
WARNING: Do not place objects or mount equipment on or near the airbag cover, on the side of the seat backs (of the front seats), or in front seat areas that may come into contact with a deploying airbag. Failure to follow these instructions may increase the ...