asodergren
Member
My 2005 Sprinter has developed a sound that I can't find any reference to in other posts. During heavy acceleration, I get a short burst of knocking coming from the back of the vehicle. It literally sounds like a woodpecker going at a tree (similar frequency and sound). It only lasts one or two seconds and there are no other unusual sounds coming from the rear end under any other circumstance. I do have an aftermarket drive shaft with a quick disconnect, but it seems well balanced and a visual inspection of it reveals nothing unusual. Anybody else ever experience this?