I was getting like 200-225 per tank then it dropped to like 180 or so. I ran the codes and it threw a code for the EGR system pressure low or something like that BTW I am running a 99 with about 75,000 miles on the new motor, 33s and 4.10s

 

O M G !!!!!!!! Come on now ROFLMFAO

 

19 gallon tank and probably about 350 miles on it. i don't pay much attention to it though.
i got 23 mpg on the freeway the other night though. I was stoked

EDIT: just realized this is in the 3.0 section. my bad

 

i get around 300-315 a tank

 

I'm between 1/4 and 1/2 tank, and the odometer says 140ish.. BUT, i ahve 35's, so i dont know how to figure out the true mileage.. i think its off... Does anyone know how to figure it out.. ? also, my spedo is correct, so will my odometer still be off?

 

about 180ish a tank....and thats all highway

 

I am getting 180ish and that is 99% city driving.

 

Speedometer and odometer are tied together. They will both be off by the same amount percentage wise.
You can easily find out how far off you are by checking your odometer against the mile markers on the hi-way.
If you odometer says you've traveled 10 miles and the markers say 12, you're off by 20%, etc, etc.
The further you go, the more accurate you'll be. If you're running 35" tires, my guess is your off by 20-25% slow.

 

Well i used to get around 280 like over a year ago but after the new tires and retiremen from daily driving its getting around 175 to a tank. maybe i should lay off the skiny pedal a bit.




Nah what was i thinking!

 

Well let's see. You've lost over 100 miles per tank.
1. Have you recalibrated for the bigger tires? If you're speedometer is off by 25% and you drive 280 miles, your odometer will read 210.

2. Keep off the gas.

 

Well i havnt recalibrted yet i sent our local ford dealer an email and they said that they couldnt do it. i was like wtf? but i only went from 235/75/15 to 31x10.50 so it wasnt that big of an increase.

but i think i also have a problem because it is like back fireing/missing it feels like a kicking action while pushing the accelerator at lower RPM's like below 3000.

 

You're right. 235/75 to 31 would only be about 7-8% diff. The missing and bucking sounds like some sort of electrical prob. Maybe plugs or wiring. Something to think about

 

Yeah thats what i was thinking also it has done it before and i replaced the plugs and it worked fine after that. but i havnt had the time or money to do it again. maybe i will when i get my next paycheck.

 

Just drove from Pa to Fl in my 00 Ranger XLT 4x4 and averaged 21/mpg on the interstate running 75 to 80mph the whole time.

 

Drove to Pearland the other day. Total drive was 370 miles round trip. Filled up here, and when I got back home, I was just a little over the E. Last time I got 25.4 mpg, and this was right there as well.

 

I have a 02 EDGE 2wd Supercab, 187000 miles and get about 325-340 per tank
Also have a 03 XLT supercab with 61000 miles usually get around 350-375 per tank
personal best for the EDGE was 24MPG about 3 years ago
for the XLT so far the best is 23.2 MPG

 

I've got a 22gal tank that I never let drop below 4gal left in the bottom. When I'm driving around Tampa, usually 300-340. When I'm driving around my home town (back roads and minimal traffic) I get 340-380.

If I draft on the highway at ~70mph I get around 450 FTW!

 

I put 12.5 gals in yesterday tank was at 1/4. Trip meter read 192 miles 80% of that was city driving.

 

about an 18gal tank, and i get about 250mpt 300 highway.

took that about 2 weeks ago a 2000 over 200,000!!!!

 

1.fill your tank ALL THE WAY.
2.reset trip odometer
3.drive
4.when you need gas refill ALL THE WAY.
5.divide the miles that are on your trip odometer by the number of gallons you put in (on the gas pump)

If you have bigger tires than stock your mpg will be off a lot. with each rotation of a bigger tire you will be going further than your truck is registering (more distance to go around the tire) you will be going further than what your odometer is saying and your mpg or mpt will be higher than what you calculate. from your picture your tires are a lot bigger, so your mpg will be higher than you calculate.

with stock tires my 3.0 was getting around 22mpg

 

my 02 3.0l has a 19.5 gollan tank. drove to columbia and back, used 3/4 of a tank and got 312 miles, was 21 mpg highway, usually get 16-17 mpg highway and stop/start combined

 

im getting like 340 to a tank right around 19 to 20 mpg its mostly all highway. 3.0 auto with stock tires and suspension. but with flowmaster muffler and drop in k&n.

 

so guys with no codes readily available by trucks cel, if you are getting terrible gas mileage and have fresh plugs and wires and a clean air filter and a seemingly good running truck is there anything solid to look for.???????

 

today I drove down and got a bumper. a week ago I drove to eastern NC (which included some city) and back and had that left me with just less than a 1/4 tank. I didn't want to get gas in Lynchburg cuz I know I could get it cheaper in Tightsqueeze (just east of Chatham, VA). I should have put in 5 bucks in the burg but I made it but not by much. I had 317 on the odo and the check guage came on at 315. The gas was like 17 cents cheaper! I put in just over 16 gallons there too. I then made this trip and back with 1-2 stops each way and a missed turn on the way back in greensboro:

US-29 S to Bessemer City Rd - Google Maps

I made it to Gastonia and back to a gas station less than a 1/4 mile up the road from the first one which came out to 352 miles to the tank and I still had probably 20-25 miles left tops in the tank before the light. I forget how much I put in the second time. But it was ALL highway and I cruised anywhere from 60-72 (usually 5 over). You waste a lot of gas cruising at 80, etc. It all depends on the car for what the prime speed is for best mpg.

 

from what i read on edmunds I have a 19.5 gallon tank (And I believe it!) and at 1/4 mark I get 245 (or around that number.