2000XJ, 112k, 4.0 auto. So it's very cold here in NY, 12 degrees, so not sure if it's a weather thing. When I started this morning, the engine had a whiny sound to it. Same when the car was driving, the sound followed along with the shifting sounds of engine/transmission. I have been changing the transmission fluid slowly but I don't think that's causing it. It seemed to get better as it warmed up. Also, when I stopped at a hill and had to accelerate from a dead stop, it seemed to slip or hop out of the stop. I'm not sure if that's connected, thanks as always for the help.