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Just realized my shop's fuel economy fix for a 6.7 Powerstroke was all wrong for a year
We had a 2019 F-250 in the bay for months with owners complaining it lost 3 miles per gallon. Kept chasing injectors and the turbo. Finally, a tech from a Ford dealer in Boise told us to check the damn DEF doser heater circuit. It was shorted, making the truck run in a permanent rich regen mode. Fixed that one $180 part and the mileage came right back in two days. How many other shops are wasting time because they don't have the right scanner to see that live data?
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