The motor could be bad, or wearing out. I replaced the pass side motor a while back and just lately, it took a direct it with a piece of retread. Of course, it is broken again. I decided to pack in the wipers this time. I ordered a pair of fascia pieces from volvoworld - took forever to get one sent to me, BTW, but eventually I painted them to match. There are no holes on these parts, but it is clear where they would be punched out from the back. I like the look of the wipers, but really they have never performed to a level I have liked. Volvo is switching to nozzles now since they are stopping the use of glass lenses - euro regulations require it to prevent scratching of the plastic lens.