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:

Rear Bumper Cover
Removal and Installation 1. Remove the luggage compartment trim panel covers. 2. Remove the seven rear bumper cover nuts. 3. Remove the fuel drain hose. 4. Remove the four bumper cover screws (two each side). 5. Remove the pin-type retainers and the rea ...

Piston Inspection
Special Tool(s) Scraper, Piston Ring Groove 303-D033 (D81L-6002-D) or equivalent CAUTION: Do not use a caustic cleaning solution or a wire brush to clean the pistons or damage can occur. 1. Clean and inspect the (1) ring lands, (2) skirts, ...

Driving through water
WARNING: Drive through water in an emergency only, and not as part of normal driving. WARNING: Engine damage can occur if water enters the air filter. Note: Driving through deep water may allow water into the transmission or air intake and can cause internal v ...