rear end knocking noise on 2001 Ford F-350 Super Duty

when first stepping on the gas, I hear a knocking noise in the rear end. Don't hear it again, unless I start from stop position. Anyone know what that might be?

by in Stroudsburg, PA on April 17, 2009
3 answers
ANSWER by , April 17, 2009
It could be your drive shaft or your rear end. I would get this resolved because something will break at some point.
ANSWER by , June 26, 2009
to me it sounds like a u joint that has gone bad.
ANSWER by , December 06, 2009
check to see if your spare tire is tightened down. My spare did the same thing and dented my exhaust and I didn't even realize it until the cable broke and I lost the spare.