Ford Mustang (1999-2004) Service Manual: Chuckle

Chuckle that occurs on the coast driving phase is usually caused by excessive clearance between the differential gear hub and the differential case bore.

Damage to a gear tooth on the coast side can cause a noise identical to a chuckle. A very small tooth nick or ridge on the edge of a tooth can cause the noise.

Clean the gear tooth nick or ridge with a small grinding wheel. If the damaged area is larger than 3.2 mm (1/8 inch), install a new gearset.

To check the ring gear and pinion, remove as much lubricant as possible from the gears with clean solvent. Wipe the gears dry or blow them dry with compressed air. Look for scored or damaged teeth.

Also look for cracks or other damage.

If either gear is scored or damaged badly, install a new ring gear and pinion.

Chuckle

If metal has broken loose, the axle housing must be cleaned to remove particles that will cause damage. At this time, any other new parts in the axle housing must also be installed, if necessary.

    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. ...

    Knock
    Knock, which can occur on all driving phases, has several causes including damaged teeth or gearset. In most cases, one of the following conditions will occur: 1. A gear tooth damaged on the drive s ...

    Other materials:

    Parking Brake Control
    Removal 1. CAUTION: If any component in the parking brake system requires repair or if the rear axle housing (4010) is removed, the cable tension must be released. Place the parking brake control (2780) in the released position. 2. Remove the console. 3. ...

    Timing Chain
    Removal 1. Remove the timing cover. For additional information, refer to Engine Front Cover in this section. 2. Remove the camshaft position sensor drive gear. 1. Remove the bolt. 2. Remove the camshaft position sensor drive gear. 3. Rotate the ...

    Pinpoint Tests
    The pinpoint tests are a step-by-step diagnostic process designed to determine the cause of a condition. It may not always be necessary to follow a pinpoint test to its conclusion. Carry out only the steps necessary to correct the condition. Then, test the s ...