Funny thing about Frigidaire pumps......they start out quiet, and then gradually get noisier.....I have the FL with the square door, bought in 2008, and for some reasoin, every two years, they replace the pump, under warranty, because its gets so loud, you hear it over top of the spin.....now that it has been replaced, you don't hear it, or the machine until the last spin...
almost as if the impellor gets off balance, and vibrates the heck out of it, and the base plate its mounted to amplifies the sound.....