williamsjaw
SDD Junior Member
While running on the freeway I notice my truck start to miss under 3/4 to full throttle. It only happens sporadically usually after I slow down (either caught behind a slow vehicle or road construction). After running slow for a couple miles I get on it and it will miss and the trans won't shift right punch the throttle and some times it down shifts, misses, upshifts w no power, downshifts again and all is good. Other times it just down shifts w no power. I have made it continuely miss by holding throttle fla to the floor for a mile or two hoping for it to throw an engine code but with no luck. This happens on average about 150 miles of free way driving. It's been to the shop 3 times for this and no fix yet of course they cannot duplicate it bc they wont drive it long enough. Dealer sayes it's just bc of regin cycle. Sorry a new truck shouldn't do this! I have almost been run over twice when passing bc of DRASTIC loss of power and missing! Truck is an f250 auto 4x4 3.73 w 16k on it, now has done this since 500 miles at which time it blew tons of white smoke and no power for a mile then ran fine. Side note when it does start missing most of the time I can let off throttle let it upshift, punch it again and it down shifts and runs just fine. IDK help needed. Thanks.
If its under warranty then I would let the dealer have it until they can reproduce the problem to see for themselves what you are talking about. New trucks should not do this. They are too expensive to have problems at 15K.
