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Symptom Chart

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM CHART

Condition Possible Sources Action
  • Tires show excess wear on edge of tread
  • Underinflated tires.
  • ADJUST the tire air pressure.
 
  • Vehicle overloaded.
  • RETURN the vehicle - NOTIFY customer of overload condition.
 
  • High-speed cornering.
  • RETURN the vehicle - NOTIFY customer of cause of condition.
 
  • Incorrect wheel alignment.
 
  • Incorrect tire rotation intervals.
  • ADVISE customer of condition. ROTATE the tires.
  • Tires show excess wear in center of tread
  • Tires overinflated.
  • ADJUST the tire air pressure.
  • Other excessive tire wear problems
  • Incorrect tire pressure.
  • ADJUST the tire air pressure.
 
  • Loose or leaking shock absorbers.
  • TIGHTEN or INSTALL new shock absorbers as necessary.
 
  • Front end out of alignment.
 
  • Front wheel bearings out of adjustment.
  • Loose, worn or damaged suspension components.
 
  • Wheel and tire assembly out of balance.
  • BALANCE the wheel and tire assembly.
 
  • Excessive lateral or radial runout of wheel or tire.
 
  • Incorrect tire rotation intervals.
  • ADVISE customer of condition. ROTATE tires.
  • Wobble or shimmy
  • Damaged wheel bearings.
  • Loose or damaged suspension components.
 
  • Bent wheel.
  • INSTALL a new wheel as necessary.
 
  • Wheel and tire assembly out of balance.
  • BALANCE the wheel and tire assembly.
 
  • Damaged tire.
  • INSTALL a new tire as necessary.
 
  • Loose wheel nuts.
  • TIGHTEN the wheel nuts to specification.
  • High-speed shake
  • Wheel hub face/pilot/bolt circle runout.
  • Wheel and tire assembly out of balance.
  • Wheel bearings.
  • Suspension/steering linkage.
  • Engine.
  • Transmission.
  • Brake discs/imbalance.
  • Vehicle vibration
  • Driveline - engine.
  • Wheel and tire assembly out of balance.
  • Damaged wheel nuts
  • Loose wheel assembly.
  • Overtightened wheel nuts.
  • INSTALL new wheel nuts. FOLLOW the correct tightening procedure.
  • Seized wheel nuts
  • Corrosion or galling.
    CAUTION: Do not allow the lubricant to get on the cone seats of the stud holes or on the cone angles of the wheel nuts.
  • If the corrosion is slight, BRUSH away the corrosion with a wire brush. If the corrosion is excessive, INSTALL new wheel studs and wheel nuts. If the condition persists, LUBRICATE the first 3 threads of each wheel stud with a graphite-based lubricant.
 
  • Overloading.
  • REDUCE the load weight.
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