humming rattle

  1. MaxinRelaxin

    Rattle/humming/vibrating

    Hello everyone, please help me diagnose this problem with my 2012 4x4 Expedition when I accelerate from when I take my foot off the peddle in 1st gear I guess, there is a rattle vibrating humm. I’m guessing something to do with the Pulleys and Serpantine belt?
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