I have a 1995 dodge ram 1500 single cab. My window was going up and down all day with no problem. Then all of a sudden it didn't want to go up. So i took the motor out and plugged it into he drivers side and the motor goes up and down. But won't go up when i put it back in the passenger side. Can someone help me out here. The fuse is still good to.

 

Switch , or wiring issue between the door and body .

 

Just because it works under no-load conditions, doesn't mean it is good. If it will roll the window down, but not up..... try and help the window up. Grab ahold and pull, while pushing the switch to the up position. If the window then goes up. Replace the motor.

 

Yeah the window motor might be weak, so try gently pulling the window as you push the button up.
The switch could be bad, but if it makes noise when you push the button, its probably not the switch.