Ruído do vento

501-25-84 Body Repairs - General Information 501-25-84 DESCRIPTION AND OPERATION ‡ Close the hole in the puffer ball with your thumb and press the air contained in the ball through the pipe. ‡ Set the ventilation blower in the passenger compartment to the highest setting. ‡ Close all doors so that a slight overpressure can build up in the passenger compartment. ‡ Move the smoke pipe along the outside of the body to the areas to be checked. Leaks can be detected through the irregular movement of the smoke. Ultrasonic test This test searches for leaks in the system of seals or rather acoustic bridges. When an ultrasonic transmitter is placed inside the vehicle, it sends out ultrasonic waves. A leak is located by running a detector along the suspected area. The position with the loudest reception of the escaping ultrasonic waves indicates places where noises occur. Ultrasonic test device E122762 Procedure: ‡ Place the ultrasonic transmitter in the vehicle. ‡ Completely close the vehicle. ‡ Search the exterior of the vehicle using the detector. ‡ The detector provides a simple indication of a leak. Stethoscope test Stethoscope E122763 Diagnosis Wind noises often have similar causes as the general NVH noises. For instance, a windshield which is incorrectly bonded in position can cause normal driving noises to become more noticeable. Asking the customer detailed questions and a road test together with the customer are the requirements for a targeted diagnosis. NOTE: Take the customer concern seriously. But do not confirm that a noise is a problem until you are sure that it is something which is not normal for the vehicle series. Possible questions: ‡ How long has the noise been there? ‡ Has any work been done on the vehicle? ‡ Where does the noise come from? ‡ In which driving situation does the noise appear? ‡ Is there any special situation in which the noise appears? Remember that a noise is often more or less noticeable depending on where you are sitting in the vehicle.