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newbie with a problem
Hi I have a 06 f-350 pds with 700 miles on it. We took to vermont for the weekend on the highway traveling at speeds of 65 to 70 i could hear a drone sound or a moderate humm. The truck never lost any boost or power but every time I was in this speed range I would get this noise. If I were below or above this speed the noise would go away. This would only happen under a light load let off it would go away.Any Ideas? could it be universal,turbo,rearend,or is it a charateristic of this truck? Any insight would be great thanks Mike
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