When I R&Red my window motor and raising mechanism I made the mistake of washing the concentric spring in solvent. That removed all lube from the coil. The coil slips by itself as the window goes up and down, without lube any rust or dirt within it causes it to catch and jump (pop). Lube the spring entirely, using a small screwdriver to create a gap as you work your way around will help. I used Tri-Flow but grease would be better. That should take care of the popping. Roy 67 Crown FDHT In a message dated 2/26/2002 11:13:56 AM Pacific Standard Time, chadzeilenga@xxxxxxxxx writes: << I recently pulled the window motor out of the drivers door on my 73 Imp (what a pain). It had stopped working and I pulled the door panel off to see what had happened and it was only a bad connection with the switch. I fixed that and figured I would take the motor out too and lube the internals. I got it out and lubed the gears and put it back on. It worked great for about 3-4 days and yesterday when I rolled the window back up in the fully closed position it acts like there is not a stop on it and tries to keep going up. It makes a really loud popping noise. Does anyone know what might be causing this? Chad 1973 Imp >>