Better Gas Mileage

[chuck davis]

I have a 2004 Ford Expedition 4x4 Eddie Bauer with 5.4l. Mileage is tops 13.9 and 12.8 in the city with no fast starts or stops. Is there a way software wise to increase mileage?
Thanks in Advance.

Chuck Davis

[warped_joe]

I haven't tested it personally, but about to. I am hearing that Tornado thing that goes in your air filter really helps. and this is from some sources I trust.

[justen]

according the fuel economy gov website, 13 is average for your truck, Although a tuner may give you a tad bit of better gas mileage. http://www.fueleconomy.gov/

Tornado fuel saver doesn't work. If they did we would install them on our new vehicles here at the dealership. Also they have had that same design (tornado) back in the 50's and has never worked. According to tests, there is more air restriction and if anything it hurts fuel mileage. I have removed dozens at work due to people complaining about fuel economy and performance issues.
http://www.wcpo.com/wcpo/localshows/.../1cbd0e4a.html

[carsandcycles]

I doubt that there is a "chip" fix for your gas mileage issue. Generally the manufacturers will err on the better gas mileage versus power issue, so Ford probably has the electronics already geared to near max mileage. I would be sure that the tires are inflated to the highest recommended pressure, and if they have an aggresive tread and you really don't do off roading, I would consider a more mileage freindly tread pattern at the next tire replacement.

[Saltmine]

13? That's positively economical. We have police units that seldom get better than 7-8mpg. The problem? Simple physics.....It takes "X" amount of energy to move "Y" amount of weight. The heavier the vehicle, the more energy it takes to move it at the same speed. Expeditions are incredibley heavy (up to 4 tons), so, they require a lot of fuel to move them. Fords have been known for poor fuel economy the past five or six years, probably due to their weight, mainly. DCX used to be the undisputed "gas hogs" of American passenger cars and trucks, but Ford is closing in on that title.
Improve fuel economy? Buy oil company stocks, or look for a lighter, more fuel efficient vehicle.

[justen]

I was bored and looked up the average for a 2004 Ford Expedition "4.6" the average was 15. Not a whole lot better. That kind of surprised me, because usually you'll see two different engines will get the same mileage in the same body style of a truck.

[Racerock]

Originally Posted by chuck davis

I have a 2004 Ford Expedition 4x4 Eddie Bauer with 5.4l. Mileage is tops 13.9 and 12.8 in the city with no fast starts or stops. Is there a way software wise to increase mileage?
Thanks in Advance.

Chuck Davis

Two experiences with Expeditions:

2002 5.4 EB - The one I have now average 13.5 to 13.9. All highway, might get 14.5.

2003 5.4 EB styled like yours - 3800 road trip, mostly all highway at about 80 MPH. Got about 18 average. That was amazing, and thought it was pretty darned good.

Not much you can do. If that is for city driving, not too bad. How many miles do you have on the vehicle, and I'll go from there for recommendations.