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:
Removal
1. Remove the upper intake manifold. For additional information, refer to
Upper Intake Manifold in
this section.
2. Partially drain the cooling system. For additional information, refer to
Section.
3. Relieve the fuel system pressure. For additional i ...
Selector Lever
Removal
1. Remove the shifter top control panel.
2. Disconnect the electrical connectors.
3. Remove the shifter bezel.
4. Remove the bulb from the bezel.
5. Disconnect the TCS connector.
6. CAUTION: Extra force may be needed to lift up on the handl ...
Spark Plug Wire
Special Tool(s)
Remover, Spark Plug Wire
303-106 (T74P-6666A)
Material
Item
Specification
Silicone Brake Caliper Grease
and Dielectric Compound
D7AZ-19A331-A or equivalent
ESE-M1C171-
A
Removal and Installation
CAUTION: ...