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:

Cleaning the exterior
Wash your vehicle regularly with cool or lukewarm water and a neutral pH shampoo, such as Motorcraft® Detail Wash. • Do not use a commercial or high-pressure wand on the surface or edge of stripes and graphics. This can cause damage to the film and cause th ...

Piston
Special Tool(s) Piston Pin Tool or equivalent 303-D034 (D81L-6135-A) Material Item Specification SAE 5W-20 Premium Synthetic Blend Motor Oil XO-5W20-QSP or equivalent WSS-M2C153- H Disassembly 1. Using the special tool, ...

Component Tests
Steering Linkage 1. NOTE: Excessive vertical motion of the studs relative to the sockets may indicate excessive wear. With the parking brake applied, perform the following: Have an assistant rotate the steering wheel back and forth 360 degrees and watch ...