Ford Mustang (1999-2004) Service Manual: Road Test

Verify the customer concern by carrying out a road test on a smooth road. If any vibrations are apparent.

To maximize tire performance, inspect for signs of incorrect inflation and uneven wear, which may indicate a need for balancing, rotation, or front suspension alignment.

Correct tire pressure and driving techniques have an important influence on tire life. Heavy cornering, excessively rapid acceleration and unnecessary sharp braking increases tire wear.

Replacement tires must follow the recommended:

  • tire sizes.
  • speed rating.
  • load range.
  • tire construction type.

Use of any other tire size or type can seriously affect:

  • ride.
  • handling.
  • speedometer/odometer calibration.
  • vehicle ground clearance.
  • tire clearance between the body and chassis.
  • wheel bearing life.
  • brake cooling.

New wheels need to be installed when vehicle's wheels:

  • are bent.
  • are cracked.
  • are dented.
  • are heavily corroded.
  • are leaking.
  • have elongated wheel hub bolt holes.
  • have excessive lateral or radial runout.

Wheel and tire assemblies are attached by six wheel nuts.

It is mandatory to use only the tire sizes recommended on the tire chart attached to the vehicle. Larger or smaller tires can damage the vehicle, affect durability, and require changing the speedometer calibration. Make sure wheel size and offsets match those recommended for the tire in use.

1. Inspect for signs of uneven wear that may indicate a need for balancing, rotation, front suspension alignment, damaged tie-rod, or steering components.

2. Check tires for:

  • cuts.
  • stone bruises.
  • abrasions
  • blisters.
  • embedded objects.

3. Tread wear indicators are molded into the bottom of the tread grooves. Install a new tire when the indicator bands become visible.

    Inspection and Verification
    WARNING: A vehicle equipped with a Traction-Lok differential will always have both wheels driving. If, while the vehicle is being serviced, only one wheel is raised off the ground and the rear axle ...

    Symptom Chart
    Condition Possible Sources Action Tires show excess wear on edge of tread Underinflated tires. Vehicle overloaded. High-speed cornering. Incorrect r ...

    Other materials:

    Gearshift Rail and Fork
    Disassembly and Assembly   1. Disassemble the first/second and third/fourth shift rail as follows: Rotate the interlock plate until it is opposite of the shift links. Slide off the third/fourth shift fork and shift link. Separate the link from the ...

    Electronic Vibration Analyzer (EVA)
    The EVA is a hand-held electronic diagnostic tool which will assist in locating the source of unacceptable vibrations. The vibration sensor can be remotely mounted anywhere in the vehicle for testing purposes. The unit displays the three most common vibratio ...

    Crankshaft - Connecting Rod Journal Taper, Out of Round
    1. Measure the crankshaft connecting rod journal diameters in two directions perpendicular to one another at each end of the connecting rod journal. The difference in the measurements from one end to the other is the taper. Verify measurement is within t ...