XJ window regulator noise

I guess you're not aware that there're such things as automatic switches? The XJ has one. When the window bottoms out, the current goes up and the switch cuts off. Or at least it used to. Rather than sarcasm, I need someone who knows to tell me if it is a simple replacement or is it integral to the regulator such that the whole thing has to be replaced, again.

The motor in the window regulator has a nylon gear in it, and when it gets worn out it makes the sound just like you are describing, evently it will do it when you put the window up. You will need to replace the regulator, about $100 from the dealership, I am doing mine in a couple of weeks.

Kevin in Iowa

My 89 XJ had a clunking noise on rollup or down, turned out to be the plastic pipe glide tube had come off and the regulator cable was snaking around inside the door.

Popped it back together, sprayed in some lubriplate and seems fine now.

Also popped open the Eaton (Ford) window regulator toggle switches with a knife blade, sprayed them clean with WD40, removed carbon deposits on contact points with pencil eraser, reassembled with Vaseline to replace original switchlube----now all windows work happily. NB: be sure to re-install switch rocker contacts the way they came out, then the switch the right way around or it won't work. Spud