Symptom Table

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM TABLE

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	SET toe to specification. REFER to SUSPENSION SYSTEM-GENERAL INFORMATION .
	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	ALIGN the front end. REFER to SUSPENSION SYSTEM-GENERAL INFORMATION .
	Front wheel bearings out of adjustment	REFER to SUSPENSION SYSTEM-GENERAL INFORMATION .
	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	REFER to COMPONENT TESTS .
	Incorrect tire rotation intervals	ADVISE customer of condition. ROTATE tires.
Wobble or shimmy	Damaged wheel bearings	REFER to SUSPENSION SYSTEM-GENERAL INFORMATION .
	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	REFER to NOISE, VIBRATION & HARSHNESS .
Vehicle vibration	Driveline - engine Wheel and tire assembly out of balance	REFER to NOISE, VIBRATION & HARSHNESS .
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.
Seized wheel nuts	Overloading	REDUCE the load weight.