300D window regulator
 

Is there a DIY on replacing the window regulator in a 300D??? Unless I overlooked it I didn;t see one listed...My motor is good, but I can take my hand and slide the window up and down all day long, either I have a gear off or broken on the back side of the regulator, can't get my head in there to see what's going on, so just gonna take the whole regulator/ motor off...

I have spent some quality time reading about this same issue and have the same questions as you. Two of the windows on my wife's car "slide" down a little on their own. If you hit the button to raise them, the window makes a "bump-bump" noise. Wait a little while and they slide down again. I still don't know if this is the motor, regulator, gears, etc. I have been afraid to ask this question given the nubmer of posts in the archives about windows, for fear of someone blowing a gasket and telling me to search the archives.

You guys should really search the archives.... just kidding. ;)

It's usually the regulator that causes the bump, bump sound. It's pretty easy to remove the regulator and the motor as a unit to see what's going on. I don't know if there is a DIY, but its pretty easy once you get into the door.