Power Window Problem

[r33skylinegtst]

Not actually a Skyline but rather a Silvia, figure it's worth posting here rather than the Silvia forums. I just recently took possession of a rare S13 convertible. It's in good condition but one of the small rear quarter windows seems to be broken. The motor works, and will pull the window up and down, but when it reaches the top it will drop straight back down. I've never had any experience with power windows before so I'm not sure what the problem is or what I need to be looking for. Any suggestions would be helpful.

[simonthomasgoodwin]

sounds like when the siccor arm is fully extended its loosing grip then the weight of the glass is forcing it back down... does it glide down or just drop? my sugestion wuld be to feel around for any loose bolts around the siccor arm..

[r33skylinegtst]

Thanks for the reply! It just drops back down. I've had a look and the bolts look okay, I can't see any that are loose or missing.