| Troubleshooting coach vibrations using the NVH app on phone [message #370765] |
Wed, 16 November 2022 20:11  |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
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Senior Member |
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Has anyone used the NVH app for cellphones to track down vibrations and shaking in your coach?
https://www.youtube.com/watch?v=s1cr3QaOzGY
https://www.youtube.com/watch?v=zAQ2AM5Y5sA
Its an app from Vibrate Software that uses the sensors in your smart phone to detect and analyze vibrations. Using the GPS function for speed and accelerometer for vibration, it can determine whether the vibration is from the wheels, transmission, drivetrain, or engine.
I have a shake that starts at about 60+ MPH that's driving me crazy. It feels like a tire balance issue. I had Counteract beads which worked fine till a few years ago. I thought maybe they were breaking down or clumping together with moisture as sometimes they seemed to work better after going over railway tracks. So I had them removed and the wheels balanced with weights before going to the maritimes. Well it was worse! It occurred to me that I saw the tire guy putting my tire pressure sensors back on after re-installing the wheels... had he balanced them without the TPS installed! So I went back and they claimed the sensors would not affect the balance. Well they are 0.7oz so that throws them off... I paid to have it done all over again and they were all off by the weight of the TPS!!
Well it was marginally better but still shook too much for comfort. So I took the wheels to another place and had them break the bead on the tires. I took them home and put 4oz of AirSoft beads in them. Well that is marginally better, but it certainly still shakes.
So I'm wondering if its a tire issue, belt separating or something that the balancer does not pick up. My tires were new in 2013, so they will be replaced in the spring.
Anyway, I came across this video (and others) on YouTube. The app seems to work wonders diagnosing the issues and suggesting fixes. Just wonder if anyone has used it. The app costs $99, but that less than the cost of a tire balancing!
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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