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Driveshaft Vibrations - The NVH App

This video demonstrates how to use the NVH app to measure and diagnose driveshaft vibrations on a vehicle. We created a driveshaft vibration on this truck but were surprised to detect two additional vibrations. This app is designed for smartphones and properly equipped tablets with GPS. Apple App Store: "NVH" app https://apps.apple.com/us/app/nvh/id1... Google Play Store: "NVH for Android" app https://play.google.com/store/apps/de... TIMELINE 0:00 Introduction 0:30 App setup for the vehicle 4:27 An example of a recorded road test procedure 5:42 Vibrations at 73 mph 6:12 Stopping the app recording 7:06 Diagnostic results from the app 7:26 The total number of Tire speed related vibrations detected 8:05 The total number of Driveshaft speed related vibrations detected 8:38 The total number of Engine speed related vibrations detected 9:00 The highest average amplitude vibration source 9:50 Graph of amplitude (iOS devices only) 10:38 Diagnostic help procedures "How do I fix this vibration?" 11:28 App tools menu 12:56 Video Summary Weber State University (WSU) - Department of Automotive Technology - Transmission Lab. Visit the following website for information on how to attend our school and obtain an associate's degree or bachelor's degree in Automotive Technology. http://www.weber.edu/automotive This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see http://www.weber.edu/automotive/J_Kel... Questions for teachers: 1. What vehicle information is needed by the NVH app? 2. How do you start the record feature of the NVH app before a road test? 3. What type of vibration was detected by the NVH app at approximately 73 mph in the video? 4. How do you stop the app recording and view the automatic diagnostic results? 5. How many times was a tire speed-related vibration detected at 73 mph? 6. How many times was a driveshaft speed-related vibration detected at 73 mph? 7. How many times was an engine speed-related vibration detected at 73 mph? 8. Once the app tells you the type of vibration the vehicle has, how do you find out how to fix the vibration? 9. Tell me one thing you learned from this video DONATE TO OUR DEPARTMENT Please consider a donation to the Department of Automotive Technology at Weber State University here: http://advancement.weber.edu/Automotive