Caution: Refer to Assistant Driving Caution in the Preface section.
| • | Test drive the vehicle to determine the origin of the reported wind noise. |
| • | Choose a regular route with smooth and straight roads that run in all
4 directions: North, South, East, and West. The area should have little traffic or
little noise in order to eliminate interference with the test. |
| | Important: Often there is one primary leak source and
one or more secondary leak sources that contribute to the noise condition. Repairing
only one of the contributing leak sources may not completely repair the total condition
but only reduce the condition.
|
| • | Drive the vehicle at the speed in which the noise was noticed, or until the
noise is heard. Maintain safe and legal speeds. |
| • | Many of the waterleak diagnosis tests are also used for the wind noise
diagnosis. |
| • | Most wind noise is caused either by leaking seals or by misaligned body
surfaces. |
| | When moving at highway speeds, air pressure inside
the vehicle becomes greater than the air pressure outside. When a leak occurs, the
escaping air causes a hiss or a whistle. |
| | Wind roar occurs when air passes over or through
an opening between the 2 body surfaces. To correct the condition, adjust the alignment
of the body surfaces. |
| | Wind rush occurs when air presses over the vehicle's
body, and is related to the aerodynamics of the vehicle. Wind whistle and wind roar
are repairable. Rule out wind whistle and wind roar before concluding that the wind
noise is due to wind rush. |
Use the following inspections in order to aid in diagnosing wind whistle or
wind roar:
- Note the details for wind noise:
| • | The location where the noise is loudest |
| • | The position of the windows |
| • | What the noise sounds like |
- Inspect the vehicle for the possible cause of the wind noise.
- Test drive the vehicle and determine if the wind noise is external or
internal.
- Perform a visual inspection at the perceived location of the wind noise
for the following:
| • | Sealer and/or adhesive skips |
