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:

Rear Drive Halfshafts (Description and Operation)
The rear wheel drive halfshaft system consists of and operates as follows: Halfshafts (4K138) transmit engine torque from the rear axle housing to the rear wheels. Halfshafts rotate at approximately one-third the speed of a driveshaft and do not cont ...

Pump - CIII
Special Tool(s) Teflon Seal Replacer Set 211-D027 (D90P-3517-A) or equivalent Removal and Installation 1. Remove the pulley. For additional information, refer to Pulley-CIII Pump in this section. 2. Remove the bolt and bracket. 3. Disconn ...

Running out of fuel
Avoid running out of fuel because this situation may have an adverse effect on powertrain components. If you have run out of fuel: • You may need to cycle the ignition from off to on several times after refueling to allow the fuel system to pump the fuel fr ...