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2B-4 Front Suspension:
Vibration Analysis - Hub and/or Axle Input
Test Description
The numbers below refer to the step numbers on the diagnostic table:
2.
This test will determine the effect of turning input on the vibration.
6.
This test will determine the effect of an initial heavy torque load on the vibration.
7.
Damaged or worn wheel drive shafts may cause a noise or vibration that may be transferred into the passenger
compartment.
8.
Damaged or worn wheel bearings may cause a noise or vibration that may be transferred into the passenger
compartment.
9.
Damaged or worn suspension components may cause a noise or vibration that may be transferred into the passenger
compartment.
10.
Damaged or worn powertrain mounts and/or exhaust mounts may cause a noise or vibration that may be transferred
into the passenger compartment.
11.
Incorrect trim height may cause binding and/or interference between components that may produce a vibration.
Step
WARNING
!
Refer to Road Test Caution.
Has the Vibration Analysis - Road Testing table been
1
completed?
1. Operate the vehicle at the speed of the vibration concern.
2. While maintaining the concern speed, drive the vehicle
through slow, sweeping turns - first in one direction, then
in the other direction.
3. Observe the vehicle for changes in the vibration
disturbance.
4. Select a smooth, level surface, such as an empty parking
2
lot or a remote road.
5. While maintaining the vehicle at the concern speed if
possible, drive the vehicle through sharp turns; 360
degrees - first in one direction, then in the other direction.
6. Observe the vehicle for changes in the vibration
disturbance.
Did the characteristics of the vibration change significantly—
become worse or go away—during these steps?
Did you hear a clicking noise and/or feel a shudder during
3
these steps?
4
Did you hear a growling noise during these steps?
5
Did you hear a popping noise during these steps?
Diagnostic Information and Procedures
Action
Yes
Go to "Vibration
Go to Step 2
Analysis - Road
Testing: "
Go to Step 3
Go to Step 6
Go to Step 7
Go to Step 4
Go to Step 8
Go to Step 5
Go to Step 9
Go to Step 13
No
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