Today my passenger side door will not open from the inside. opens from the outside, but when I try the inside handle it moves but doesn't unlatch. The car is a 79 Spider. Any ideas on what is going on with this, thanks.
The handle may be slipping on the shaft. It is held in place by a small set screw. You might unscrew it then pull off the handle then try turning the shaft with a vice grip wrench and see if the door will open.