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International Automotive Technicians Network
Re: resetting ford flex fuel percentage
Posted to Technical Discussion Forum on 4/8/2023

I wanted to see if getting the FF% from 70% to 38% made any change so I left the truck outside Thursday night to cold soak. Friday morning the temp was zero. Truck started right up and idles fine but would stumble and stall when accelerated. By pumping the thr... Login to read more.