Appreciate any help, Im in Florida, just drove out from San Diego and towing a boat back. This happened once before about 5 months ago and just went away. Its been well over 100 degrees every day travelling. Today, I stopped for fuel and when i started back up, the truck didnt want to get on the onramp fast...the bucked a few times...so I slowed down, let it slowly get to 70mph, 2600rpms. When I would try to push up a hill, it would buck, Id back off. After 20-30 mins at 2600rpms and flat, it then was fine and full power. 2 hours later, I stopped it, shut it down, restarted it and same thing...but once again it resolved by running without be pressed too hard for 15-20 mins. Does this seem like a turbo that is gumming up? Any help is much appreciated.