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:

Symptom Charts
Symptom Chart - Air Leak and Wind Noise Condition Possible Sources Action Air leak around door perimeter Loose fit seal. Seal installed incorrectly. Door misaligned. Scuff plate installed incor ...

Intake Air Distribution and Filtering
Torque Specifications a - Refer to the procedure Intake Air Distribution and Filtering (DESCRIPTION AND OPERATION) The air intake system consists of the: air intake scoop (Mach I) air cleaner (ACL). air cleaner (ACL) element. mass air flow (MAF) s ...

Installation
1. NOTE: This procedure applies to both the LH and RH halfshafts. Install a new driveshaft bearing retainer circlip. 2. Remove the special tool. 3. CAUTION: Differential seal damage will occur if installing the halfshaft without the special tool installed. ...