Ok so my truck had a "studdering" problem several months ago. Everytime I get on the gas it shakes, rumbles, and has a hard time going. I thought this problem was fixed but it has come back again. No check engine light or anything. Previously replaced o2 sensors, gaskets, you name it I probably replaced it. I need all the help I can get.

2001 4.2 v6 ext cab 2wd