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:

Component Tests
Pressure Test 1. Turn the engine OFF. 2. WARNING: Never remove the pressure relief cap under any conditions while the engine is operating. Failure to follow these instructions could result in damage to the cooling system or engine and/or personal injury. To ...

Engine (Assembly)
Special Tool(s) Slide Hammer 307-005 (T59L-100-B) Remover Adapter, Vibration Damper 303-176 (T82L-6316-B) Installer, Crankshaft Front Seal 303-474 (T94P-6701-AH) Replacer, Steering Pump Pulley 211-009 ...

Disassembly
Initial disassembly 1. Remove the differential housing cover (4033) and drain the lubricant into a suitable container. 2. Wipe the lubricant from the internal working parts and inspect the parts for wear and damage. 3. Using the special tool, measure and n ...