I have a 02 F-250 V-10. We use this to pull our 4 horse camper/trailer. We take this to a state park which has a huge hill to go up to get to the camp ground. I have taken this truck there maybe 6 times. The last 2 times it barley made it to the top of the hill. I had the pedal to the floor and was doing 10-12 mph tops. I used to be able to climb this hill at 20-25 mph using half to 3/4 pedal. Pulling down the interstate it has no issues. I have nothing for going up hills, any ideas what could be wrong???

Thanks

 

Either it's leaning out from lack of fuel, or your catalytic converter is plugged up.

Change the fuel filter, check the fuel pressure (under load) and go from there.

Is it a 4x4? If so, you can use 4LOW without the hubs locked and put a lot less stress on the motor and tranny - but you should figure out why it's slowing down first anyway