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Joined 1 year ago
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Cake day: June 14th, 2023

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  • Pro tips for all:
    When listing to a noise there are a few notable things to pay attention to:

    Frequency - does the frequency of the noise match anything you can think of?
    Does the noise change frequency when variables change (engine speed, wheel speed, road bumps)?
    Amplitude - Does the noise change volume (or vibration/knock amount) as load changes (drivetrain load, vehicle load (corners, hills, bump severity))?
    Are you able to predict and verify the noise changes when you make changes in your driving?
    Finally, location. This one can be tough with noises because the scenery can affect how well any noise is reflected back at your ears. Still useful to note, however!

    I literally went through this process yesterday. lol
    My Jeep started making an awful knocking/vibration directly under me. As i slowed to pull off the road i verified that the issue had no predictable frequency and the amplitude changed slightly with load.
    An exhaust hanger broke which allowed the exhaust to hit the transmission crossmember (location) over bumps (unpredictable frequency) or heavy vibration (high load).