Chad2919

It's my engine that is stumbling and cutting out before it's up to operating temp, I can even watch the tach bobble a bit when it does it-for the most part it runs like a carburated engine with stumbling and sputtering with rpm fluctuations that get sharper and more abrupt when driving 25-34mph @ 1000-1400 rpms until it reaches about 170 coolant temp. Then when it's up to temp it has the occasional "fish bite" sensation at low rpms at steady highway speed-55 or 80 doesn't matter. It's even more perceptable while pulling a trailer but it happens so abruptly when hot that I cannot perceive the tach bobble when feeling the "fish bite". Mine has the 6 speed and unsure how this is trans fluid/filter related but you have me considering that I may be experiencing two separate/unrelated issues... All of which, the ECU is not finding a misfire...but it feels like a misfire. I was convinced that it is an electrical/sensor situation whether it be the Throttle body servo/mass air flow sensor/or the drive by wire peddle sensor or maybe even a coolant temp sensor or crank position sensor...but the dealer refuses to evaluate without codes in the PC. I appreciate you suggesting possibilities and options to research!

I have a 2017, which I purchased new with 5miles on the clock and now has 29k. Does this very SAME thing! Even when up to temp and in 6th/OD slight load or slight incline down the highway, I feel a random "fish bite" but absolutely no codes and dealer has not been able to find issue after many visits to dealer. Any resolution yet???