I am having a similar problem with my from passenger door and window and could use some help. I have had this jeep for 4 years and decided today to do the window jumper trick. When that didn't work, I opened up the passenger door and noticed the wire connector down bottom, for the motor, was disconnected. I connected it, hit the key and the window went up and down from both the passenger and river switches. All fixed, right?
I put the door panel back on, started the car, pushed the button to lower the window and it went a little slow, but it went all the way down. Push the button to go up and nothing. Now the window is stuck in the down position. So, I open up the door panel again, fight with the connector, disconnect, reconnect, and the window goes up.
Figuring it was disconnected for a reason, I disconnect again and leave it.
Anyone with an idea of what the problem is here? Is the motor burning out, hence not able to function as designed? What else can I look at?