Sometimes the right front window in my '98 doesn't work. I have to press the switch like 5 times, or press down really hard to get the window to move. I assume the contacts in the switch are dirty. Can the switch be taken apart and cleaned?
In my 96 Cobra the passenger window wouldn't go up from the switch on the drivers door. It would go down, but not back up. I think I went to Late Model Restoration and got a replacement switch that was easy to install. Just a little time consuming. As far as cleaning the switch, it might work, but as cheap as the replacment part is I'd probably just replace it.