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:

Air Distribution
NOTE: The air distribution system of this vehicle cannot be equipped with a cabin air filter. There are two sources of air available to the air distribution system: outside air recirculated air Recirculated air is only used during MAX A/C. Air distribut ...

Engine Cooling (Diagnosis and Testing)
Special Tool(s) Pressure Tester 014-R1072 or equivalent 73III Automotive Meter 105-R0057 or equivalent Worldwide Diagnostic System (WDS) 418-F224, New Generation STAR (NGS) Tester 418-F052, or equivalent scan ...

Vibrate Software
Vibrate Software (Rotunda tool number 215-00003) is a diagnostic aid which will assist in pinpointing the source of unacceptable vibrations. The engine's crankshaft is the point of reference for vibration diagnosis. Every rotating component will have an angu ...