One broken Windsheild Wiper

My driver side windsheild wiper in my '89 Chyrsler LeBaron recently stopped working. The other one works fine. WHen I tried taking a look at it I noticed that it could move freely back and forth when I moved it, even all the way off the windshield, while the passanger one barely moves when I try. Any ideas?

Sounds like one of two things. First, you probably have a little plastic cover at the end of the windshild wiper arm (the end that attaches to the car) Lift that and see if there is a nut there. If its that style, chances are the nut just came loose.

The other possibility is that the arm underneath came loose. That's probably a common sense thing to fix, but it might be a pain to reach.