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:

Output Shaft
Special Tool(s) Remover, Drive Pinion Bearing Cone 205-D002 (D79L-4621-A) or equivalent Installer, Drive Pinion Bearing Cone 205-011 (T57L-4621-B) ...

Installation
1. Install the upper intake manifold gasket. 2. Install the intake manifold and bolts in the sequence shown. 3. Install the PCV valve-to-intake manifold tube. 4. Connect the vacuum hoses and the electrical connector to the EGR vacuum regulator soleno ...

Engine and Radiator Flushing
Special Tool(s) Coolant System Drain/Flush/Fill 164-R3673 or equivalent Flush Kit 164-R3658 or equivalent Drain Kit 164-R3662 or equivalent Material Item Specification Motorcraft Premium Cooling ...