ok guys so here's what I know, my truck got a cel and it was a p0455. Truck is a 4.0OHV and body lifted. Runs fine, although at one stop light I noticed it sputtered a bit like it had an vacuum leak. Gas mileage is also way down, I usually get to about 200 miles on 3/4 a tank, i only made it to about 120 miles this time, and it was all highway. Any ideas?