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:

Four Wheel Anti-Lock Brake System (4WABS) Hydraulic Control Unit (HCU)
NOTE: This procedure only needs to be performed if the 4-wheel anti-lock brake (4WABS) hydraulic control unit (HCU) has been installed new or if the HCU lines have been opened. 1. Clean all dirt from and remove the brake master cylinder filler cap ...

Security Access - Procedure
Special Tool(s) Worldwide 418-F224, New Generation STAR (NGS) Tester 418-F052, or equivalent diagnostic tool NOTE: The security access procedure is utilized to obtain passive anti-theft system (PATS) security access. PATS security acce ...

Trim Panel - Upper Quarter
Special Tool(s) Safety Belt Bolt Bit 501-010 (T77L-2100-A) Removal and Installation 1. Remove the rear seat cushion. 2. Using the special tool, remove the rear safety belt anchor bolt. 3. Remove the screw and the coat hook. 4. Open the ...