why do the windows go slow or no at all? IT takes awhile for them to go back up

well you may have a window motor or regulator bad or in a bind.over time the windows get crap on them from the weather,or from trees,sap for instance.all my windows in several cars and truck did the slow thing.a guy showed me this as i was buying a buick regal from him.at that time i was driving a 1991 accord 4 door.i told him all windows were going up and down slow.he went in his garage and got a can of silicone spray and told me to roll all the windows all the way down.he then attached the little red straw to the can and sprayed it into all my window tracks,just where the glass rides on,just spray a little starting at top to the bottom.roll windows up and down a few times and windows will go up and down so smooth,like they are on steroids.this is unless you have a bad motor or regulator.try it,wont hurt.if it works,do it 3 or 4 times a year.dirt and grime gets in there and makes it tough on the motor and regulator.if all is well after this,remove inside door panel then or later and spray a little silicone on the regulator.you can buy this silicone spray at az,adv,or napa and walmart is cheapest.the one i use is made by liquid wrench.