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:

Installation
1. CAUTION: Lubricate the filler pipe check valve area and the tank-to-filler pipe grommet with Serfactant prior to assembly or damage to the filler pipe check valve will occur. NOTE: A new grommet must be used for the installation procedure due to its dest ...

Adjusting the headlamps
The headlamps on your vehicle are properly aimed at the assembly plant. If your vehicle has been in an accident, an authorized dealer should check the alignment of your headlamps. Vertical Aim Adjustment 1. Park the vehicle directly in front of a wall or scre ...

Axle Housing
Removal and Installation 1. CAUTION: The vehicle must be on level ground and at curb height. Mark the rear shock absorbers relative to their protective sleeve.  During installation, raise the suspension to this reference mark before tightening the s ...