Ford Mustang (1999-2004) Service Manual: Gear Howl and Whine

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:

Component Tests
Battery-Load Test 1. With the engine running, turn the A/C on, the blower motor on high speed and the headlamps on high beam. 2. Increase the engine speed to approximately 2,000 rpm. The voltage should increase a minimum of 0.5 volt above the ba ...

Removal
CAUTION: Since the engine is not free-wheeling, timing procedures must be followed exactly or piston and valve damage can occur. 1. Remove the engine front cover. For additional information, refer to Engine Front Cover in this section. 2. Remove the cranksh ...

Starter Drive and Flywheel Ring Gear Inspection
1. Remove the starter motor. For additional information, refer to Starter Motor-3.8L or Starter Motor-4.6L in this section. 2. Check the wear patterns on the starter drive gear and the flywheel ring gear . If the wear pattern is normal, install the sta ...