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my fuel mileage has been almost outragously low and i have done everything i can think of to try and fix it, fuel filter, spark plugs, wires, air cleaner, and even the seafoam thing, I also cleaned but then ultimately replaced the MAF. Before each replacement i always unhook the battery due to possible clumsyness, and each time my fuel mileage doubled but for only about a week. I usually run about 60-70 miles a week. I am getting 8-10mpg and each fix usually put me back around 16-18. So after months of stress and talking to several ford dealerships, which were no help. I decided to just unhook the battery and thats all, well after that It put me back up to the better fuel mileage! So im guessing the computer is running me a very lean fuel mix which i assume will destroy my cat converters very soon along with unaffordable mpg. can anybody suggest any fixes for this? Also no codes are being thrown, ive checked with a scanner. and it runs good no hesitation, good power. I also replaced both upstream O2 sensors. I'm starting to thing my computer might have an issue that it keeps reverting back to a very poor fuel curve.
I guess its not a lean mixture but a rich mixture
I guess its not a lean mixture but a rich mixture
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