Symptom Chart

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. 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	Under-inflated tires	ADJUST air pressure in tires.
	Vehicle overloaded	RETURN vehicle. NOTIFY customer of overload condition.
	High-speed cornering	RETURN vehicle. NOTIFY customer of cause of condition.
	Incorrect ride height	SET ride height.
	Incorrect wheel alignment	SET alignment to specification. REFER to SUSPENSION SYSTEM-GENERAL INFORMATION .
	Incorrect tire rotation intervals	ADVISE customer of condition. ROTATE tires.
Tires show excess wear in center of tread	Tires overinflated	ADJUST air pressure.
Other excessive tire wear problems	Incorrect tire rotation intervals	ADVISE customer of condition. ROTATE tires.
	Incorrect tire pressure	ADJUST pressure.
	Loose or leaking shock absorbers	TIGHTEN or INSTALL new shock absorbers as necessary.
	Incorrect wheel alignment	SET alignment to specification. REFER to SUSPENSION SYSTEM-GENERAL INFORMATION .
	Loose, worn or damaged suspension components	REFER to SUSPENSION SYSTEM-GENERAL INFORMATION .
	Wheel and tire assembly out of balance	BALANCE wheel and tire assembly.
	Excessive lateral or radial runout of wheel	REFER to NOISE, VIBRATION & HARSHNESS .
Wobble or shimmy	Damaged wheel bearings Loose or damaged suspension components	REFER to SUSPENSION SYSTEM-GENERAL INFORMATION .
	Bent wheel	INSTALL a new wheel as necessary.
	Damaged tire	INSTALL a new tire as necessary.
	Loose wheel nuts	TIGHTEN to specification.
High-speed shake	Wheel hub face/pilot/bolt circle runout Tires/wheels Wheel bearings Suspension/steering linkage Engine Transmission Brake discs/imbalance	REFER to NOISE, VIBRATION & HARSHNESS .
Vehicle vibration	Driveline - engine Tires	REFER to NOISE, VIBRATION & HARSHNESS .