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Message: [QUOTE="knaffie, post: 1267810, member: 16781"] I have a 2015 CCSB F350 stock with 20,000 miles. At 15,000 miles it started making a vibration. Although its faint, you can hear it and feel it in the floorboards. Now that I'm tuned into it, it's driving me crazy. If you stand on it from a stop, it starts at 65, is worst between 70 and 75, then goes away above 80. Set the cruise at 73 and its almost nonstop. Add headwind, gets worse. Go uphill, gets worse. Hook my 11K# trailer up and it gets a lot worse. Going up a steep hill with my trailer and its very noticeable. Seems to make no difference what gear its in. More you ask of the engine, the worse it gets. The dealer looked at it, called Ford and they its most definitely pinion angle. So now the dealer has it for a couple weeks supposedly playing with the pinion angle hoping they adjust it right and make it go away. I don't believe its the pinion angle. I towed this trailer 5000 miles (Indiana to California and back) without a single noise, now all the sudden its the pinion angle? Dealer also told me to cut out the factory overload leaf and install airbags to help with the sag. It only sits about 1" below level with my trailer hooked up. I have a 15,000# Blue OX weight-distributing hitch for that very reason. And it makes the noise empty, so that's not it. I've heard it might be driveshaft and might be torque converter. Anything else I can point the dealer toward? [ATTACH=full]155963[/ATTACH] [/QUOTE]

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