My 67 coupe windows have given me all sorts of grief. First it was the passenger side --- the glass could be pushed down with your little finger. Then it started sliding down during driving. I replaced that regulator. When I opened up the old gear case, parts flew everywhere so I never figured out what went wrong.
The driver's window has had a problem of rocking back and forth in the channel; most of the time it pinched the vent window weatherstrip. I went through the entire shop manual procedure for window adjustment. No help. I took out the regulator and found no real problems. Finally, I took out the glass and discovered that the two vertical nylon glides (part of the glass assembly) were worn away. I replaced both with parts from another car and it works great now.
Hope this helps someone else. The shop manual isn't real helpful when this happens.
The driver's window has had a problem of rocking back and forth in the channel; most of the time it pinched the vent window weatherstrip. I went through the entire shop manual procedure for window adjustment. No help. I took out the regulator and found no real problems. Finally, I took out the glass and discovered that the two vertical nylon glides (part of the glass assembly) were worn away. I replaced both with parts from another car and it works great now.
Hope this helps someone else. The shop manual isn't real helpful when this happens.