what mpg should I expect from my 2000 7.3 4x4 Excursion
I am trying to determine why my mpg seem lower than when I bought the 2000 4x4 Excursion new, everything is still stock and I have 180,000 miles on it. Currently i am getting 12-14mpg locally and it doesn't seem to get much better on the highway. A few years back i called the Ford dealer and they tried to tell me the sudden drop-off was due to fuel changing in the winter. I am getting older, but I could swear that I was getting between 18-20 on the highway while cruising at 70mph back then on the long hauls. Just came of back from a 2000 mile trip and don't think i broke 16 while driving 95% highway miles.
What are you guys expecting from your similar set-ups? Am I just losing it in my age?
most problems on the 7.3 is the exhaust backpressure tube gets clogged up or the sensor is clogged. A simply cleaning of the sensor and tube will help with power and MPG. The second problem is the stock fuel tank pick up line, the stock setup uses this weird feed return setup that mixs the two so your feed is sucking air bubbles from the return and it makes the motor loose power
2004 F-350, XLT, SC, SB, FX4, 5.4, 4R100 w/ .472 line mod valve & TransGo HD2 reprogramming kit, 4.30 gears w/ Detroit locker, zoo dad mod w/ STOCK intake, Gibson stainless headers, SPD y-pipe, 51509 cat, Borla 3" exhaust, 1" rear AAL, dually upper and lower overload spring, 08 diff cover, ProComp 22210 springs, more.....
To the OP: Have you changed anything on your truck? Tires? Springs? Anything? Is your speedometer/odometer known to be accurate, and has it always been? I noticed mine was reading about 3% slow, and corrected it with AE and a GPS. My "mileage" immediately jumped. Of course, it really didn't change, at all, I was just measuring it more accurately.
For what it's worth, I get 13-14 around town, and 16-17 on the highway.
2001 Excursion 4x4, Western Diesel gauges, custom tunes, T500, ATS housing, TM wastegate controller, 6637, MBRP 4" exhaust, 6.0 tranny cooler, BTS, BFG AT 275/70-18's, Red Head steering box, Hellwig sway bar, v-codes/AirLift bags
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