Almost assuredly emissions related. EGR sensors seem to be one of the culprits. We recently did a full delete on a 2012 F550, after repeated sensor failures. I think I will do the same as soon as my F250 is out of extended warranty. That's only a few miles away.
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Scotty and Kristen, Airedales Dagny and Wyatt
2007 Newmar Mountain Aire 4528, 450 HP ISM, Allison 4000, 8 Lifeline AGM's
2019 F250 King Ranch 4x4 Powerstroke - SOLD
2022 F350 DRW King Ranch 4 x 4
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