Hi there, I recently purchased a 96 dodge 3/4 ton with 110k on it. It seems a little doggy when driving normal at higher rpms. Last weekend I pulled an empty trailer and I could barely pull it 60! I had to hold it to the floor the whole time and it wouldn't rev up and wouldn't gain anything. I'm thinking its a loss of fuel at high rpms but I'm no expert. Also, shouldn't the transmission kick down when going 50-60 so i can gain some rpms? The guy I bought it from said that someone told him it needed a lift pump, do you agree? Also, he had the tps sensor replaced, could this need adjusting? Any ideas on this would be greatly appreciated since I have never worked on these before and I know it shoul dbe a pulling beast. The mileage also is poor at around 12 mpg. Thanks!