If the handle is loose, then the cable is either stretched or broken. Both requiring a new cable for a proper repair. Disconnect the cable from the handle inside & pull with pliers. If it's broken get a new cable(installed). On the other hand the release(under hood) could be stuck, pry with screwdriver/lube.
http://www.binghamtonlife.com/manual...s/91-20-58.jpg - thats for a '91 but yours is very similar.