I drive a 99 RD with an E7 400 with a 8 speed behind it, since it got cold the engine does some strange things. When running up through the gears sometimes it will only rev to about 1700 then the torque falls off badly or it will start to "hunt" for lack of a better term, or if I stay in it sometimes all of a sudden the power and torque will come back. It seems when the outside air warms up later in the day it will run alright. I'm leaning toward a bad boost sensor, but not sure, can I get some help on this problem. I do not think it is a fuel problem because I don't think the air temp would affect that.
