transmission whine

I have a 97 taurus gl 3.0 140,000 miles, couple years ago I changed about 2 quarts of transmission fluid. after that the first drive at about 30 miles an hour speed, a high pitched noise like something spinning suddenly starts but only starting in fall cool weather until warmer spring. When I slow down to around 20 it stops. Doesnt do it at all during summer months. Doesnt do it everytime I stop and start either but alot of the times it does. It has no effect on performance of Trans. Could it be a trans sensor that spins? any input to this thread I thank you. :p

Are you sure it's a tranny whine and not the famous Ford power steering pump whine? If you're not sure try neutral while cruising on the highway and see if it follows RPM or speed.

Denis

I tryed the shift into neutral thing, and it does nothing to the sound, same as usual, I had a guy at a muffler shop that does other work but not trans work, drive it, he said it was "trans and that cost you 1500 bucks". any other ideas , afraid to take to trans shop you know there gonna say I need a rebuild. Was wondering if it could be a trans sensor spinning if any of them actually spin, I dont know if they do?