I have been chasing my tail on this issue. The truck pops off when I kit the key then slows to a rough stumble of a idle after about 10 seconds or so it settles in and idles fine but with some missing. I have replaced or tested everything that I can think of still no dice. The truck started fine this morning when the temp was about 20F outside. I logged a start up, im out of ideas and starting to think this is a tune issue more then a part issue.
The thing that bugs me is once you get above 10% it stops missing and pulls hard, I have a log of running down the road if anybody wants to see it. Any ideas would be great as I'm out of ideas!