Symptom Chart: NVH

Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: DIAGNOSTIC METHODS (100-00 General Information, Description and Operation).

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 .