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Home >> Ford >> 2002 >> Excursion 6.8 S, 4WD >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Suspension System - General Information -- Excursion & F250-F550 Super Duty >> Diagnosis And Testing >> Suspension System >> Symptom Chart

Symptom Chart

SYMPTOM CHART

Condition Possible Sources Action
  • Dogtracking
  • Excessive rear thrust angle.
  • ADJUST as necessary.
  • Front or rear suspension components.
  • Drive axle damaged.
  • Drift/pull
  • Unequal tire pressure.
  • ADJUST tire pressure.
  • Incorrect front caster split or front camber split settings.
  • ADJUST as necessary.
  • Tire forces.
  • ROTATE tires front to rear.
  • Unevenly loaded or overloaded vehicle.
  • NOTIFY the customer of incorrect vehicle loading.
  • Steering components.
  • REFER to STEERING SYSTEM - GENERAL INFORMATION .
  • Brake drag.
  • REFER to BRAKE SYSTEM - GENERAL INFORMATION .
  • Front bottoming or riding low
  • Front spring(s).
  • Front suspension bumper(s).
  • Front shock absorber(s).
  • Rear bottoming or riding low
  • Rear spring(s).
  • Rear suspension jounce bumper(s).
  • Rear shock absorber(s).
  • Incorrect tire wear
  • Incorrect tire pressure (rapid center rib or inner and outer edge wear).
  • ADJUST tire pressure.
  • Excessive front or rear toe (rapid inner or outer edge wear).
  • Excessive negative or positive camber (rapid inner or outer edge wear).
  • ADJUST as necessary.
  • Tires out of balance (tires cupped or dished).
  • BALANCE tires.
  • Rear spring squeak
  • Rear spring(s).
  • INSTALL new rear spring anti - squeak inserts.
  • Shackle bushing (s).
  • INSTALL a new bushing as necessary.
  • Rough ride
  • Shock absorber(s).
  • INSTALL a new shock absorber as necessary.
  • Spring(s).
  • Shimmy or wheel tramp
  • Loose wheel nut(s).
  • TIGHTEN to specification. REFER to WHEELS & TIRES .
  • Loose front suspension fasteners.
  • Front wheel bearing adjustment.
  • Wheel or tire concerns.
  • REFER to WHEELS & TIRES .
  • Springs.
  • Loose, worn or damaged ball joints.
  • Loose, worn or damage steering components.
  • REFER to STEERING SYSTEM-GENERAL INFORMATION .
  • Front wheel alignment.
  • ADJUST as necessary.
  • Sticky steering, poor returnability
  • Ball joints.
  • Steering components.
  • REFER to Section STEERING SYSTEM - GENERAL INFORMATION .
  • Front caster angle.
  • ADJUST as necessary.
  • Steering wheel off-center
  • Unequal front or rear toe settings (side-to-side).
  • Sway or roll
  • Overloaded, unevenly or incorrectly loaded vehicle.
  • NOTIFY the customer of incorrect vehicle loading.
  • Loose wheel nut(s).
  • TIGHTEN to specification. REFER to WHEELS & TIRES .
  • Shock absorber(s).
  • INSTALL a new shock absorber as necessary.
  • Loose stabilizer assembly.
  • Worn stabilizer assembly bushing (s).
  • Worn spring(s).
  • Vehicle leans to one side
  • Unevenly loaded or overloaded vehicle.
  • NOTIFY the customer of incorrect vehicle loading.
  • Rear suspension components.
  • Front suspension components.
  • Incorrect ride height. Lateral tilt out of specification.
  • INSPECT the rear suspension system. REPAIR or INSTALL new rear suspension components as necessary. REFER to REAR - EXCEPT F150 .
  • Spring(s).
  • Vibration/noise
  • Tires and wheel concerns.
  • Wheel bearings.
  • Wheel hubs.
  • Brake components.
  • Suspension components.
  • Steering components.
  • Repair as necessary.
  • Wander
  • Unevenly loaded or overloaded vehicle.
  • NOTIFY the customer of incorrect vehicle loading.
  • Ball joint(s).
  • Loose, worn or damaged front wheel bearing(s).
  • Loose, worn or damaged suspension component(s).
  • Loose suspension fasteners.
  • Steering components.
  • REFER to STEERING SYSTEM-GENERAL INFORMATION .
  • Wheel alignment (excessive total front toe out).
  • ADJUST as necessary.
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