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:

Manual Transmission
The TR3650 five-speed manual transmission features the following: The fifth speed gear functions as an overdrive gear. The forward gears are synchronized and helical cut. The reverse gear operates through a constant-mesh, fully synchronized system. ...

Transmission Cooling
Inspection and Verification WARNING: Never remove the radiator cap under any conditions while the engine is operating. Failure to follow these instructions could result in personal injury and/or damage to the cooling system or engine. To avoid having scaldin ...

Economical driving
Fuel economy is affected by several things, such as how you drive, the conditions you drive under and how you maintain your vehicle. There are some things to keep in mind that may improve your fuel economy: • Accelerate and slow down in a smooth, moderate f ...