I have a maytag model A511 ser# 117859 nc, I have no idea how old it is. It will not pump the wash water out, it will add more water in the rinse cycle and spin in the spin cycle. some water must go out as it does not run over. Also, when the washing cycle is over the timer does not shut off it simply rolls into the next cycle and keeps on going. Do I fix it or buy a new one? Thank You