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:

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 ...

Camshaft End Play - OHC Engines
Special Tool(s) Dial Indicator Gauge with Holding Fixture 100-002 (TOOL-4201-C) or equivalent 1. Remove the roller followers. Refer to the appropriate section in Group 303 for the procedure. 2. Use a Dial Indicator Gauge with Holding Fixt ...

Manifold Gauge Set Connection
Special Tool(s) R-134a Manifold Gauge Set 176-R032A or equivalent 1. Turn both valves on the R-134a Manifold Gauge Set clockwise to close the low- and highpressure hoses to the center manifold and center hose. 2. Remove the A/C charging valv ...