[PoliSciGrl]

I have a 2001 Ford Windstar, 3.8L. Yesterday I two seemingly unrelated problems occured at the same time. My air conditioner quit getting cold and my transmission started acting up. When I accelerate from a stop, it makes a jerking motion, similar to when you start in second or third gear on a standard, only this is an automatic. Also, the tranny does not seem to be shifting up. It drives good from about 15-30 mph but then the rpm's start to go up. Today I changed the transmission fluid and filter. (No shavings in the fluid.) Any ideas on what could cause both of the sympoms, has anyone had a similar experience?

Thanks a bunch for any suggestions.