Ford Mustang Service Manual: Bearing Whine
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.
This distinguishes it from gear whine which usually comes and goes as speed changes.
As noted, pinion bearings make a high-pitched, whistling noise, usually at all speeds. If however there is only one pinion bearing that is worn/damaged, the noise may vary in different driving phases. If pinion bearings are scored or damaged or there is a specific pinion bearing noise, new pinion bearings must be installed. A worn/damaged bearing will normally be obvious at disassembly. Examine the large end of the rollers for wear. If the pinion bearings original blend radius has worn to a sharp edge, a new pinion bearing must be installed.
NOTE: A low-pitched rumble normally associated with a worn/damaged wheel bearing can also be caused by tires.
A wheel bearing noise can be mistaken for a pinion bearing noise. Check the wheel bearing for a spalled cup, and spalled/damaged rollers. Check the wheel bearing for rotating smoothness and end play. Install a new wheel bearing if any of these concerns are detected.
If the wheel bearing is damaged, the roller surface on the axle shaft may also be damaged. Install a new axle shaft if any damage is detected.
Gear Howl and Whine
Driveline System
Special Tool(s)
Clamp Plate
205-320 (T92L-4851-C)
Clutch Housing Alignment
Adapter
308-021 (T75L-4201-A)
Companion Flange Holding
Tool
205 ...
Chuckle
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 d ...
Other materials:
Installation
Removal
CAUTION: Suspension fasteners are critical parts because they affect
performance of vital
components and systems and their failure can result in major service expense. A
new part with
the same part number must be installed if installation becomes nec ...
Steering System (Diagnosis and Testing)
Steering System (Description and Operation)
The steering system has a typical rack-and-pinion design consisting of the
following:
Steering System Components - 3.8L Engine (CII Power Steering
Pump)
Steering System Components - 4.6L Engine (CIII Pow ...
Appendices
GENERAL INFORMATION
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