One of those little things that I tend to ignore but it still bothers me. My rear wiper arm on my 91 mountaineer clunks and clacks when ever I used it. It makes its clunks at both ends of the pass, and a even louder clunk when it returns to the holder after it is turned off.

Is this normal? If not can it be fixed?

Clunking back into the holder is normal. Never heard mine clunk while moving, tho the wiper does screech if there isn't enough water on the glass.