SAAB WIS ONLINE

Noise Diagnosis - Rear Suspension

Noise Diagnosis - Rear Suspension


Step Action Yes No
DEFINITION: Any noise emitted from the rear of the vehicle that is induced by VEHICLE SPEED or DRIVING TERRAIN as related to the rear suspension.

1

Did you review the General Description and perform the necessary inspections?

Go to

Go to Symptoms - Suspension General Diagnosis

2

Attempt to duplicate the condition. Road test the vehicle.

Did you duplicate the condition?

Go to

System OK

3

Is the noise reactive to vehicle load or speed?

Go to

Go to

4

Perform the following inspections:


• Inspect and adjust the tire inflation. Refer to Vehicle Certification, Tire Placard, Anti-Theft, and Service Parts ID Label .

• Inspect for unusual tire wear. Refer to Vibration Analysis - Tire and Wheel .

• Inspect the wheel nuts for looseness. Refer to Fastener Tightening Specifications .


Did you find and correct the condition?

Go to

Go to

5

Inspect the front wheel bearings. Refer to Wheel Bearings Diagnosis .

Did you find and correct the condition?

Go to

Go to

6

Bounce the rear of the vehicle in order to duplicate the noise.

Did you duplicate the noise?

Go to

Go to

7


1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Inspect the rear suspension components for looseness. Refer to Fastener Tightening Specifications .

3. Inspect the rear suspension components for damage and repair as necessary.


Did you find and correct the condition?

Go to

Go to

8

Inspect the rear shock absorber. Refer to Suspension Strut and Shock Absorber Testing - On Vehicle

Did you find and correct the condition?

Go to

Go to

9


1. Install a listening device, if existing.

2. Bounce the rear of the vehicle, preferably by using a listening device, in order to locate the source of the noise. If necessary road test the vehicle.

3. Repair or replace any damaged components as necessary.


Did you find and correct the condition?

Go to

System OK

10

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to