Symptom Related Diagnostic Procedures

SYMPTOM CHART
CONDITION(s):

Crabbing
Possible Source(s):
- Incorrect rear thrust angle.
Action(s) to take:
^ CHECK the rear crossmember alignment.

Possible Source(s):
- Front or rear suspension components.
Action(s) to take:
^ INSPECT the front and rear suspension systems. REPAIR or INSTALL new suspension components as necessary.

Possible Source(s):
- Drive axle damaged.
Action(s) to take:
^ INSTALL a new drive axle.


Drift/Pull
Possible Source(s):
- Unequal tire pressure.
Action(s) to take:
^ CHECK and ADJUST the tire pressures. INSPECT the tire for excessive wear.

Possible Source(s):
- Incorrect wheel alignment.
Action(s) to take:
^ CHECK and ADJUST the wheel alignment.

Possible Source(s):
- Tires.
Action(s) to take:
^ CHECK and ADJUST the tire pressures. INSPECT the tire for excessive wear.

Possible Source(s):
- Unevenly loaded or overloaded vehicle.
Action(s) to take:
^ NOTIFY the customer of incorrect vehicle loading.

Possible Source(s):
- Damaged steering components.
Action(s) to take:
^ CHECK the steering system.

Possible Source(s):
- Brake drag.
Action(s) to take:
^ CHECK the brakes.


Front Bottoming or Riding Low
Possible Source(s):
- Spring(s).
Action(s) to take:
CHECK the ride height. INSTALL new springs as necessary.


Incorrect Tire Wear
Possible Source(s):
- Incorrect tire pressure (rapid center rib or inner and outer edge wear).
Action(s) to take:
^ CHECK and ADJUST the tire pressure. INSPECT the tire for excessive wear.

Possible Source(s):
- Excessive front or rear toe (rapid inner or outer edge wear).
Action(s) to take:
^ CHECK and ADJUST the wheel alignment.

Possible Source(s):
- Excessive negative or positive camber (rapid inner or outer edge wear).
Action(s) to take:
^ CHECK and ADJUST the wheel alignment.

Possible Source(s):
- Tires out of balance (tires cupped or dished).
Action(s) to take:
^ BALANCE the tires.


Rough Ride
Possible Source(s):
- Spring(s).
Action(s) to take:
^ CHECK and INSTALL new springs as necessary.

Possible Source(s):
- Shock absorber(s).
Action(s) to take:
^ CHECK and INSTALL new shock absorbers as necessary.


Shimmy or Wheel Tramp
Possible Source(s):
- Loose wheel nut(s).
Action(s) to take:
^ CHECK and TIGHTEN the wheel nuts to specification.

Possible Source(s):
- Loose front suspension fasteners.
Action(s) to take:
^ CHECK and TIGHTEN the suspension fasteners to specification.

Possible Source(s):
- Front wheel bearing(s).
Action(s) to take:
^ CHECK the wheel bearings.

Possible Source(s):
- Wheel/tires.
Action(s) to take:
^ CHECK the wheels/tires. BALANCE or INSTALL new wheel/tires as necessary.

Possible Source(s):
- Shock absorber(s).
Action(s) to take:
^ CHECK and INSTALL new shock absorbers as necessary.

Possible Source(s):
- Spring(s).
Action(s) to take:
^ CHECK and INSTALL new springs as necessary.

Possible Source(s):
- Loose, worn or damaged ball joint(s).
Action(s) to take:
^ CHECK the Ball Joint(s).

Possible Source(s):
- Loose, worn or damaged steering components.
Action(s) to take:
^ CHECK and INSTALL new components as necessary.

Possible Source(s):
- Front wheel alignment.
Action(s) to take:
^ CHECK and ADJUST the wheel alignment.


Poor Returnability of the steering
Possible Source(s):
- Ball joints.
Action(s) to take:
^ CHECK the Ball Joint(s).

Possible Source(s):
- Steering components.
Action(s) to take:
^ CHECK and INSTALL new components as necessary.


Steering wheel off-center
Possible Source(s):
- Unequal front or rear toe settings.
Action(s) to take:
^ CHECK and ADJUST the wheel alignment.

Possible Source(s):
- Steering components.
Action(s) to take:
^ CHECK and INSTALL new components as necessary.


Sway or roll
Possible Source(s):
- Overloaded, unevenly or incorrectly loaded vehicle.
Action(s) to take:
^ NOTIFY the customer of incorrect vehicle loading.

Possible Source(s):
- Loose wheel nut(s).
Action(s) to take:
^ CHECK and TIGHTEN the wheel nut(s) to specification.

Possible Source(s):
- Spring(s).
Action(s) to take:
^ CHECK and INSTALL new springs as necessary.

Possible Source(s):
- Shock absorber(s).
Action(s) to take:
^ CHECK and INSTALL new shock absorbers as necessary.

Possible Source(s):
- Loose front stabilizer bar or rear stabilizer bar .
Action(s) to take:
^ CHECK and TIGHTEN the stabilizer bar to specification.

Possible Source(s):
- Worn lower suspension arm stabilizer bar insulators.
Action(s) to take:
^ INSTALL new lower suspension arm stabilizer bar insulators as necessary.


Vehicle Leans to One Side
Possible Source(s):
- Unevenly loaded or overloaded vehicle.
Action(s) to take:
^ NOTIFY the customer of incorrect vehicle loading.

Possible Source(s):
- Front or rear suspension components.
Action(s) to take:
^ INSPECT the front and rear suspension systems. REPAIR or INSTALL new suspension components as necessary.

Possible Source(s):
- Shock absorber(s).
Action(s) to take:
^ CHECK and INSTALL new shock absorbers as necessary.

Possible Source(s):
- Spring(s).
Action(s) to take:
^ CHECK and INSTALL new springs as necessary.

Possible Source(s):
- Incorrect ride height. Lateral tilt out of specification.
Action(s) to take:
^ CHECK the ride height. INSTALL new springs as necessary.


Vibration/Noise
Possible Source(s):
- Tires/wheel.
- Wheel bearings.
- Wheel hubs.
- Brake components.
- Suspension components.
- Steering components.
Action(s) to take:
^ CHECK and INSTALL new components as necessary.


Wander
Possible Source(s):
- Unevenly loaded or overloaded vehicle.
Action(s) to take:
^ NOTIFY the customer of incorrect vehicle loading.

Possible Source(s):
- Ball joint(s).
Action(s) to take:
^ CHECK the Ball Joint(s).

Possible Source(s):
- Front wheel bearing(s).
Action(s) to take:
^ CHECK the wheel bearings.

Possible Source(s):
- Loose, worn or damaged suspension components.
Action(s) to take:
^ CHECK and INSTALL new suspension components as necessary.

Possible Source(s):
- Loose suspension fasteners.
Action(s) to take:
^ CHECK and TIGHTEN the suspension fasteners to specification.

Possible Source(s):
- Steering components.
Action(s) to take:
^ CHECK and INSTALL new steering components.

Possible Source(s):
- Wheel alignment (excessive total front toe-out).
Action(s) to take:
^ CHECK and ADJUST the wheel alignment.