My 2005 Prius sounds louder to me than normal. The car has 117,000 miles on it and is in great condition. Anyways I can hear, maybe, on the gas engine what sounds like a bad water pump or tension pulley, not sure though? I checked the water pump area and there is no visible signs of a leak or dried pink coolant. If the water pump is indeed bad what can I expect at the Toyota dealership cost wise? Any help is appropriated. Thank you.