From looking on ebay and other websites where broncos are for sale it seems to be a common problem of window problemsand Broncos. I own a 86 Full size Bronco w/ Power windows and my passenger side window needs assistance going up. The window motor does work (I think) but the window continues to slide down. When I am pulling the window up it goes up and the window motor is helping but as I drive it slowly starts back down. What is up with that? Anybody have any clues let me know. :huh: