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:

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 ...

Installation
All axles 1. Position the ring gear and the differential case. Align the bolt holes by starting two bolts through the holes in the differential case and the ring gear. Press the ring gear on the differential case. 2. Install the bolts. Apply Stud and Bea ...

Headliner
Removal 1. Remove the two upper quarter panels. For additional information, refer to Trim Panel-Upper Quarter in this section. 2. Remove the two windshield side garnish mouldings. 3. Remove the two sun visors. 1. Remove the six screws. 2. ...