So, I took the door back apart as = soon as I got home, and after looking for a few minutes, found that the window was = getting stuck in a notch at the bottom of the window regulator track.  I = checked around inside the door, but found no loose pieces floating = around.  Is there supposed to be some sort of stopper there? 
 
Not sure this is your = problem... but.... On my 90 there is a small rubber bumper / pad at the bottom of the = door cavity. the bumper is maybe 1/2 inch in diameter and maybe 1/4 inch in = height with a small 'tit' on the back that holds it in place... the small tit = on mine broke... you will likely find it in the 'foot well' portion of the = door cavity... everything seems to roll down there below the electric door = motor (I have electric windows)...
 
caution... if you have = electric windows don't strain them because a typical problem is for the plastic cable = guide elbow at the bottom of the window track to break... a real pita to fix...
 
if you can't find the = original bumper with a tit to hold it into place perhaps you could just glue one in there...
 
Good = Luck,
 
Bill
 
 
It's like the window is simply going = a couple of millimeters too far down the track, and getting stuck.  I was = able to push out on the window and unstick it, but that's not much of a solution.
If someone with an ETKA CD could take = a look at the driver's door, and see if there is supposed to be a stopper at the = base of the window regulator, I would appreciate it, as I hadn't the time or = patience ( I was freezing!) last night to take the passenger door back apart to = check for myself.  Also, if you can tell what form that stopper takes, = it would be most appreciated.  Of course any other advice in this matter = would be helpful too.
BTW, it's an 84 7-passenger with = non-powered windows.
Thanks in advance.
 
-Jason