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:

Gear (Disassembly and Assembly)
Special Tool(s) Head Mounting Fixture 303-D041 (D83L-500-B1) or Equivalent Inner Tie Rod Socket Tool 211-D025 (D90P-3290-A) or Equivalent Steering Gear Holding Fixture 211-D011 (D87P-3504-B) or Equivalent Material ...

Thermostat - 3.8L
Material Item Specification Gasket Adhesive TA-6 or equivalent WSS-M2G408- A Motorcraft Premium Gold Engine Coolant VC-7-A (in Oregon VC-7-B) (yellow color) WSS-M97B51- A1 Removal and Installation 1. Drain the engine cool ...

Cooling System Draining, Filling and Bleeding
Material Item Specification Motorcraft Premium Gold Engine Coolant VC-7-A (in Oregon VC-7-B) (yellow color) WSS-M97B51- A1 Draining WARNING: Never remove the pressure relief cap while the engine is operating or when the cooling syst ...