Q–The left rear window on my 1993 Taurus LX four-door sedan with 49,000 miles will not open at times. I am wondering if it is the rear window motor or the switch for the window. Please advise. F.M., ...

If you've ever sat in the backseat of a car and tried to roll down the window, you may have noticed that a little bit of the glass always seems to be sticking up, no matter how far you move it down.