I have a 98 wr and on hot rides the coolant leaks out from the drain hole in the water pump. While trying to remove the impeller shaft I was taking off the impeller and as I was trying to unscrew it from the impeller shaft the whole assembly started turning and the impeller did not unscrew. Something gave inside...I assume it is the narrow part of the impeller that snapped. What to do? Can I pry the impeller and the impeller shaft out of the housing? Any ideas?