It is not a new phenomenon. There is an extensive thread over on Irv2.com/Ford Chassis mostly about new F53 chassis, but also references to F350s and posts about Axis 24.1 E350s (mine) as well.
Lots of different theories. None have panned out for long. Add your name to the NHTSA list and put pressure on Ford to find a real fix.
David
David
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