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Ellen_Higgins's avatar
Ellen_Higgins
Explorer
Mar 31, 2021

Nexus Chassis noise

I have a 2020 Nexus Viper 27V on 2019 Ford E450 chassis. There is a vibration noise coming from underneath the chassis, it is not in the engine. The vibration noise is only heard between 60 and 65 MPH. Below 60 and above 65 no vibration noise. Any suggestions as to what might be the cause?
Class C
  • DrewE's avatar
    DrewE
    Explorer II
    Mar 31, 2021
    A few possibilities exist; offhand, and approximately in order of my guessed likelihood, it might be:
    1. Universal joint/carrier bearing/drive shaft balance issues.
    2. Out of balance or out of round tires/wheels.
    3. A whiney sound, particularly one that varies with load, could be noise from the differential.
  • Tyler0215's avatar
    Tyler0215
    Explorer
    Mar 31, 2021
    Get up to speed when vibration starts, shift into neutral and see if the vibration goes away. If it does have the U joints and carrier bearings checked.

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