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:

Road Test
Verify the customer concern by carrying out a road test on a smooth road. If any vibrations are apparent. To maximize tire performance, inspect for signs of incorrect inflation and uneven wear, which may indicate a need for balancing, rotation, or front susp ...

Anti-theft system
The active anti-theft system is designed to warn you in the event of unauthorized vehicle entry and is also designed to help prevent unwanted towing of the vehicle. You can choose what is monitored by arming the system in different ways. Partial Monitor Mode ...

Valve Cover LH
Material Item Specification Silicone Gasket and Sealant F7AZ-19554-EA or equivalent WSE-M4G323-A4 Removal and Installation 1. Position the oil level tube (6754) out of the way. 2. Disconnect the breather tube. 3. Separate the engine wir ...