I have a 1998 Dodge Caravan Sport with the 3.3L Automatic. When cold, the transmission makes a loud whining noise and only when its completely warmed up it kind of goes away. 203,000 miles, it seems to shift good except for a few times it clunked downshifting into a lower gear. Tranny fluid is over filled I believe. Just bought it and wondering what to do? Thanks!