A dishwasher pump apparatus includes a liquid pump member, a motor operably connected to the liquid pump member and a cooling fan configured to cool the motor. The cooling fan includes an outer fan housing. Example dishwasher pump apparatus can further include an outer sound absorbing layer at least partially encapsulating at least one of an outer motor housing and the outer fan housing. Further examples, the outer fan housing can include an exhaust portion defining an exhaust path. An inner sound absorbing layer can line an inner area of the exhaust portion.