Truck has been acting weird for about a month.Real sluggish,when it shifts to 2nd gear it feels like it struggles a little bit and then it shifts hard just into 2nd. From a stop its really sluggish to get going and feels like its not getting enough air into the engine or something...no idea what it is. I did notice when the truck is cold it shifts better than when its warm. I just had a radiator hose leak that I fixed so don't think that has anything to do with it but took it for a drive this morning to make sure I had the hose fixed and it was fine at first when it was cold but afterwords when it got warmed up it started getting sluggish.

 

its fine when it cold?