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:

Roller Followers
Special Tool(s) Compressor, Valve Spring 303-452 (T93P-6565-AR) Removal and Installation 1. Remove the LH and RH valve cover. For additional information, refer to Valve Cover LH and Valve Cover RH in this section. 2. Position the piston of t ...

Evaporator Core Orifice
NOTE: The evaporator core orifice is an integral part of the condenser to evaporator line and should be installed as an assembly with the line. NOTE: A new evaporator core orifice should be installed whenever a new A/C compressor is installed. The evapora ...

Driveline Angle Inspection
Special Tool(s) Anglemaster II Driveline Inclinometer 164-R2402 or equivalent NOTE: An incorrect driveline angle can cause a vibration or shudder. 1. Check the vehicle for evidence or overload or sagging. Check for specified air pressures in ...