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hey guys, can anyone put forth any input towards the issue i am having with my 2011 6.2L F150? When i go to start it after even an hour or 2 of being off ill ho to start it again with autostart and wont take off for me, tried again, sounded like flywheel was grinding... tried a third time it turns over and then starts, but instead of its normal kick up to 1500 rpm and come down again, it starts slow and chugs its way up all while barely running. Sounds absolutely terrible and is not throwing any DTC's at me.. dont know if its a spark issue, computer issue or an issue with my chip.. (I have a Bullydog GT tuner hooked up and set on tow/economy)... if anyone has any input it would be greatly appreciated!
I am really hoping it is bad fuel, running cenex 91 octane which is a high grade fuel.. Feels like i have plenty of power going down the highway but i habent put er down at all. its just upon initial startup. It did it a couple weeks ago as well which was roughly 2500 miles and a few tanks of gas ago (i thought she snapped out of it after that but i guess not).. ill look into disconnecting the chip but if you hear of anything else im all ears! Thanks!