Symptom Chart: NVH

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .

NOTE: If equipped, the Lane Keeping System (LKS) can interfere with accurate NVH diagnostics. Disable the Lane Keeping System (LKS) before test driving the vehicle to diagnose NVH concerns. For information on disabling the Lane Keeping System (LKS), refer to the Owner's Literature.

NVH symptoms should be identified using the diagnostic tools that are available. For a list of these tools, an explanation of their uses and a glossary of common terms, REFER to: Noise, Vibration and Harshness (NVH) . Since it is possible any one of multiple systems may be the cause of a symptom, it may be necessary to use a process of elimination type of diagnostic approach to pinpoint the responsible system. If this is not the causal system for the symptom, REFER to: Noise, Vibration and Harshness (NVH) . for the next likely system and continue diagnosis.

Condition	Possible Sources	Actions
Wobble or shimmy	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	Tires/wheels	REFER to Radial Runout Measurement - Loaded Hunter Road Force ® Method or Radial Runout Measurement - Dial Indicator Method.
Vehicle vibration	Tires/wheels	REFER to Radial Runout Measurement - Loaded Hunter Road Force ® Method or Radial Runout Measurement - Dial Indicator Method.