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:

Clutch And Clutch Field Coil
Special Tool(s) 2-Jaw Puller 205-D026 (D80L-1002-L) or equivalent Installer, A/C Compressor Coil 412-065 (T89P-19623-EH) Holding Fixture, Compressor Clutch (3.8L vehicles) 412-098 (T94P-19703-AH) Holding ...

Connecting Rod - Bearing Journal Clearance
Special Tool(s) Plastigage 303-D031 (D81L-6002-B) or equivalent NOTE: The crankshaft connecting rod journals must be within specifications to check the connecting rod bearing journal clearance. 1. Remove the connecting rod bearing cap. 2. ...

Installation
1. Apply silicone gasket and sealant in the locations shown. 2. Install the engine front cover.   3. Install the belt idler pulleys and the bolts. 4. Connect the CMP sensor electrical connector. 5. Raise the vehicle. 6. Install the crankshaft fr ...