RideInMyJ wrote:nope. its the motor, the gear inside is complete mush.
I've replaced two window motors in my J30 with rebuilt units from Advance Auto Parts.
At the time (two years ago), the cost was around $50.00 provided you give them your bad motor as core.
The motors had a "lifetime" warranty (as long as YOU own the car) so I took the gamble. So far, so good. It's been over two years and knock on wood, no problems with the rebuilt units.
Carlos