Ford Mustang (1999-2004) Service Manual: Analysis of Vibration

WARNING: A vehicle equipped with a Traction-Lok differential will always have both wheels driving. If only one wheel is raised off the floor and the rear axle is driven by the engine, the wheel on the floor could drive the vehicle off the stand or jack. Be sure both rear wheels are off the floor.

Few vibration conditions are caused by the rear axle. On a vibration concern, follow the diagnosis procedure in Section unless there is a good reason to suspect the axle.

Tires

WARNING: Do not balance the wheels and tires while they are mounted on the vehicle.

Possible tire disintegration/differential failure could result, causing personal injury/extensive component damage. Use an off-vehicle wheel and tire balancer only.

Most vibration in the rear end is caused by tires or driveline angle.

Vibration is a concern with modern, high-mileage tires if they are not "true" both radially and laterally.

They are more susceptible to vibration around the limits of radial and lateral runout of the tire and wheel assembly. They also require more accurate balancing. Wheel and tire runout checks, truing and balancing are normally done before axle inspection.

Driveline Angle

Driveline angularity is the angular relationship between the engine crankshaft (6303), the driveshaft, and the rear axle pinion. Factors determining driveline angularity include ride height, rear spring, and engine mounts.

    Inspection and Verification
    Certain axle noise or vibration symptoms are also common to the engine, transmission, wheel bearings, tires, and other parts of the vehicle. For this reason, be sure that the cause of the trouble is ...

    Driveline Angle
      Item Description 1 Bottom of the frame 2 Engine crankshaft centerline 3 Engine angle 4 Driveshaft and coupling shaft centerline 5 Driveshaft an ...

    Other materials:

    Runout Check - Brake Disc and Hub
    Special Tool(s) Brake Measurement Kit 134-R0199 or equivalent Material Item Specification High Temperature Nickel Anti- Seize Lubricant F6AZ-9L494-AA ESE-M12A4- A CAUTION: The brake disc (1126) runout specification must ...

    Changing the wiper blades
    1. Pull the wiper blade and arm away from the glass. 2. Squeeze the locking tabs to release the blade from the arm and pull the blade away from the arm to remove it. 3. Attach the new blade to the arm and snap it into place. Replace wiper blades at least onc ...

    Transmission (Removal)
    1. Disconnect the battery ground cable. For additional information, refer to Section. 2. Lift up on the clutch pedal and secure it in place. 3. Remove the gearshift lever knob (7213). 4. Remove the console panel gearshift plate. Lift the gearshift leve ...