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:

Flywheel Runout Check
Special Tool(s) Dial Indicator/Magnetic Base 100-D002 (D78P-4201-B) or equivalent 1. Mount the special tool so that the indicator contact point rides on the clutch disc contact surface. 2. Turn the flywheel (6375); if the runout exceeds the ...

Using sync with your media player
You can access and play music from your digital music player over the vehicle’s speaker system using the system’s media menu or voice commands. You can also sort and play your music by specific categories, such as artists, albums, etc. SYNC is capable of ...

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 ...