Originally Posted by tifosiman

You didn't check the sunroof timing belt tension did you? It has to be checked every 15K miles. The sunroof on these cars is an interference design, and when the belt gets loose, it can skip a few teeth and all havoc occurrs. The little chunks of plastic are probably all that is left of the sunroof valves, after the sunroof pistons slammed into them and rendered them useless. Whatever you do, don't try to open it again, you'll just destroy more sunroof valves.