Man that really bums me out. I really wanted to go to 285 BFG ATs next time from my 265 Michelins, but 2 MPG?! Thats a good bit.

 

Ok, I have had my Excursion for well over a year. I have learned alot, but I still think there is something wrong with it and its fuel economy.

I drive like grandma at 55-60 mph two lane no stops and still can't get over 15 mpg. Besides all the mods in my signature line, I have changed the fuel filter and cleaned the EBPV sensor pipe. Tires are 70 psi. Lie o meter say 20.9 most of the time, math says anywhere between 13.5 and one time 15.9. I recently lost a years worth of avg on my smart phone, but avg for the last 1723 miles is 13.8 mpg.

I have driven mostly highway miles on this last tank and I will be lucky to get 300 miles out of a half a tank.

So where do I start. What all do I need to check and look for. I don't have a auto enginuty and I don't know of anyone that does. I am not really ready to start throwing parts at it either. What are some of the culprits that I can check for please.

Thanks

 

Dont be offended but make sure your front hubs are not locked in.
I say this because i bought my X 6mon. ago the writing on the hubs was gone afer only getting 13.5 to 14.5 mpg even after some mods i checked them and they were locked in the last tank i avg 15.75 mpg
now that is not great but it is alot better.

 

Take it out and verify the accuracy of the speedometer. You never know if a previous owner changed the tire size or tire size setting in the computer.

 

I recently brought a 00 Ex out of retirement. It has the 7.3 and is a 4wd. To say it had a hard life would be an understatement. Everything is stock. It gets 17 to 18 mpg on the interstate.

 

made a trip to OH the other day. Just pulling the car trailer out there I got 19.4mpg. On the way back with a OBS truck on the trailer I got 14.4mpg. This is with a 2wd though. :P

 

I just finished a trip up interstate 5 and got about 18mpg going 70-80mph. I have 3.73 gears with 35in tires and had rpm at about 2100-2200. Went about 700miles on 7/8th of a tank.

 

Bought my Ex, Ltd. 7.3 4x4 a few weeks ago and drove it home from Nashville to Stuart Florida ('bout 1K miles) @ a steady 70mph... 21.3 mpg hand calculated. Has cold intake and Magna flow dual exhaust. Other than that ... stock. 265 Michilens were real nice tires.

I see many say the mileage decreased by going to a taller tire. My experiences has always been the opposite... slight increase. Wonder why? Anyone care to explain? I do understand if the tire brand changes, air pressure or type of tire could change the mileage in a negative way.

I tow a lot, and this is why I got it, but no numbers yet towing.

 

We are in Juno Beach now, lots of Exes down here for sure.

When you use a taller tire it throws the speedo off a bit showing lower mileage. I think taller tires may help on the highway some but hurt in the city.

 

If it is right I got 33.2 mpg on my way home from work last night over a 39 mile run. 3 Stop lights. One stop sign. Otherwise kept it easy on and off at 1200-1300 rpm (44ish mph).

I must say this is totally managing the driving experience the whole time and adding approximately 20-25 minutes to my drive. Otherwise I am around 16-17.

I have been adding Super Tech TC-W3 Outboard 2-Cycle Oil when I fill up @ 1oz per Gallon of Diesel. I have also added a 203 degree thermostat and an Ingen Cold Air Intake System along with a Banks 4" straight pipe exhaust.

I would like to get a Bully Dog or some other performance Tuner to enhance the driving experience and MPG.

Thanks

 

If the Computer is right...

It's not, unless it is all down hill.

 

I haven't had to put fuel in my X for months now!

 

^^^^^ That right there is funny. ^^^^

But you have been buying some Honda fuel, though.

 

yeah, I have had to fill up the honda a few times I guess.

 

Computer lied to you. Only way to get that MPG with an Ex is to be going downhill in neutral with the engine off...