My wife's '07 CRV has had a rear wiper that hasn't worked. I checked it out a little today and noticed the fuse was blown. I replace the fuse and tested it out and the wiper ran. But it's running slowly and will stop in random spots instead of all the way down on each side. She told me it was doing this before it stopped working before. What should I check to see what the deal is with this thing? Thanks for any information!