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:

Interior mirror
WARNING: Do not adjust the mirror when your vehicle is moving. Note: Do not clean the housing or glass of any mirror with harsh abrasives, fuel or other petroleum or ammonia based cleaning products. You can adjust the interior mirror to your preference. Some ...

Vibration When Brakes are Applied
For vibration concerns when brakes are applied, perform the following procedure. Visually inspect: tire condition and pressure. suspension bushings and ball joints. Correct as necessary. 1. Verify and isolate the concern. Brake roughness can be felt in: ...

Spark Plug - Inspection
1. Inspect the spark plug for a bridged gap. Check for deposit build-up closing the gap between the electrodes. Deposits are caused by oil or carbon fouling. Clean the spark plug. 2. Check for oil fouling. Check for wet, black deposits on th ...