need help 01 ranger 4.0 8-9 mpg
i apologize if this has been covered already did a search and didn't find anything even close to my problem. I have an 01 ranger edge 4x4 4.0 4 speed auto I'm getting 8-9 mpg I filled up tank set my trip meter and refilled on empty to get this no check engine light and no codes I checked 4 times with 4 different odb2 scanners (matco, snapon, autozone special, and a Cornell tools). good spark from coil pack and plugs just did a full tune up oil, filter, air filter, fuel filter and plugs and wires runs good plenty of power and clean maf sensor. But I can't figure this out any ideas? Oh stock height 245/75/r15 and a cherry bomb muffler are the only addons. I just bought thus truck a month ago it has 148k on it maybe an o2 sensor that's not registering, or could it be a power programmer someone before me used and didnt put it back to stock?
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