My Frigidaire clothes washer stopped pumping the water out. My wife said there was a clunking noise prior to the pump stopping to pump water. I took the water pump out and noticed that 3 of the 4 water impellers were not fully there (around 50% missing). I also found part of one of the impellers. My question is "are the missing impeller parts the cause of my problem (water not pumping). The part costs $85 so I would like to be sure that is the problem.