Posted 9/17/2020 07:56 (#8500316 - in reply to #8499055) Subject: RE: Kenworth vibration at high speed?
Southern Alberta Canada
Might want to check your driveline and tires if it seems to be a consistent rhythm (comes and goes in a consistent cycle). I'm thinking harmonics through the driveline as the rear wheels go into and out of time. Locking the power divider might give you a clue if the issue either goes away or stays when locked. It would be more vibration then "swoosh" but maybe,nothing to lose.