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:

Supercharger Belt Idler Pulley
Removal and Installation 1. Remove the supercharger drive belt cover. 2. Rotate the supercharger belt tensioner clockwise and remove the supercharger belt. 3. Remove the bolt and the supercharger belt idler pulley. 4. To install, reverse the removal pro ...

Installation
1. Align the blend door driver to the full heat position. 2. Place the temperature control knob in the full WARM position. 3. Attach the cable drive to the control head. 4. Rotate the knob back and forth from full WARM to full COOL. 5. Check the cable ...

Installation
1. Inspect the pinion flange seal journal for rust, nicks, and scratches prior to installing the flange. Polish the seal journal with fine crocus cloth, if necessary. 2. Lubricate the pinion flange splines. Use SAE 80W-90 Premium Rear Axle Lubricant XY-80 ...