Hello, I have repaired beyond 30000 vehicles in my career and I habit to question you questions in the past I am not there in person to collect facts, data, or to test your vehicle. I may question you to function testing in my stead. If scrutiny is needed and you would rather not pretend testing, I can meet the expense of my best advice, Fuel pressure?
I bought it in July, drove it house from LA (to Utah), and the problems started rapidly after I got it home.Any extra incite you can allow is appreciated. I don't know what else to get but agree to it urge on to the dealer. I know I've got the shop foreman on the go on it at the dealer, but I still mood its pushed to the back up as its outdated and everyone loses in this situation.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you taking place to date upon all maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms going on and is warmed up? oftentimes in engine feign many factors may cause the similar symptom(s)