[Mark44]

I posted another thread recently about a broken door spring on the inside door handle of my '02 996 coupe. I replaced that spring successfully and thought I had taken care of the problem with the window not clearing the gasket when the door is closed.

It turns out that the problem still exists. When I made that repair, I had the battery disconnected so as to prevent the airbag from firing. After putting the door panel together and connecting the battery, I went through the procedure of holding down the window button to recalibrate the motor, and the window seemed to be working as it should. However, the problem still exists.

I've looked at the Berkeley book and the 101 Projects for 996 books but am not able to find any information on this problem. Both the window motor and regulator seem to work smoothly, with no weird noises.

Is there a sensor of some kind in the window regulator mechanism that could be operating intermittently? Note that the window goes up and down as it should, and the window drops down 1/4" or so when the door is shut about half the time, so it isn't like some component has failed completely (which would make diagnosis easier).