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harmonic vibration

  1. 6.7 Problems Forum (2011-2016)
    I asked this in driveline section with no reponse & it's at the dealership for its 3rd visit with Ford MoCo involved. Hi, First off I am new to the site & appreciate any input, I picked up a 2012 F350, 4x4 CC, LB, a month ago and I am in need of help, I searched the site, asked questions on...
  2. 6.7 Drivetrain Problems (2011-2016)
    Hi, First off I am new to the site & appreciate any input, I picked up a 2012 F350, 4x4 CC, LB, a month ago and I am in need of help, I searched the site, asked questions on other threads with no luck. I have a vibration at 1300-1400 RPM roughly in between 35 to 45 miles an hour, I am sure its...
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