well this is something i experienced this past winter in the extreme cold when i first started my truck up and i did not let it run for at least 10 minutes when i would go to take off the truck would lag i could put the peddle all the way to the floor and it would maybe hit 30 mph then if i kept holding it it wild knock really hard and lag even more i was afraid i would damage something so i would let off the gass i had to put it in park and then in drive again and it would end up fixing the problem. anyone have the same thing happen?

 

Moving to the correct section.

 

What year truck? What engine? How many miles?

 

Any codes?

 

no codes and its a 2000 dodge ram 1500 sport 5.9l v8 4x4