My truck is stock 4x4. 19mpg in the summer on average, and 16 in the winter. I got 13mgp a few weeks ago, but that was because the roads had about a foot or more of snow on them, and i was stopped in traffic because cars couldn't move, and i was in 4x4 almost the whole tank, so I don't know how accurate it was with the front tires spinning a lot. But even on average tanks in freezing temperatures i still get 16-18.

Are you sure you're calculating your mpg properly?

 

HI!... Wow, I can't believe some of the MPG you guys are getting. When my truck was bone stock I got about about 25MPG on the highway. Now since it's totally broken in and I have added a 16" electric fan, CAI, and ASP crank pulley, I get 28-30MPG on the highway.

 

i get about 12-14 in city and 14-17 on highway in a 2wd. with 31 inch tires

 

HI!... English please? LOL!.

 

I drive my 2001 easy most of the time..

I get roughly 15.5MPG highway. Thats with a K&N intake, 4.10 gears, and 285/70/17 BFG a/t's. Something is wrong. Guess its time for a major tune up. Approaching 95k miles and AFAIK it still has original plugs, wires, fuel filter, and transmission fluid. Guess I need to change that stuff out ASAP and hope for a change

 

When I got my 2003 (4.0 auto) I was getting 14ish mpg. Did all maintenance/tune up, and on pure highway, with my 3.55 gears and 30's, I get over 20mpg, once got 22.7mpg.

Normal city for me is around 15/16mpg, but I like to use that skiny pedal. I could baby it and get 17/18.

I attribute it all to my gears.

 

the trans was flushed in august, i checked the plugs today gaps getting a bit big. but it runs well so i don't know.

 

i might change out the plugs. and muffler? would that help?

 

A muffler would help as much as the intake did which isn't much.

 

fuel filter? clean you maf? 02 sensors?

personally i think its the deep cold and winter fuel.

 

hopefully i can figure this out.

 

fuel filter and lines were done in september. it might just be the gas and cold.

 

I get about 18.5 in city and dont really know on hwy since i drive mostly in city, everything about my truck is mainly stock

 

Must be nice 18.5 mpg wth!

 

Don't think anyone has mentioned tire pressure. Also check for a dragging brake. If those are good then it's most likely the winter gas, cold temps, and your driving style. With that many miles your 02 sensors *might* be lazy and hurting mileage as well. (the two that are furthest forward)

Rich

 

are you driving around with the park brake set? jeez, that is lousy mileage.

my 2006 FX4 5 speed auto hits anywhere from 16 to 22 depending on winter/summer, city/highway and what mood i'm in! the truck is stock.

try some fuel injector cleaner, and maybe change the fuel filter again. sounds like a complete tune up is in order anyways.

 

i ordered plugs and wires so i'll be putting them in this week. see how that helps

 

I average 20 with Freds 87 mpg tune.

it's a 4x4 auto with the 4.0 sohc and 4.10's, and i drive aggressively, so I have no complaints.

 

Ok I think we get it.....You have silet armor tires.

 

in my 2.5L ranger i got about 17 mpg and in my new FJ 4.0 v6 i get 23 high way 19 city

 

Try https://www.ranger-forums.com/forum2...hlight=seafoam

It cant hurt, and you might as well do it if your doing your plugs. Also have you checked your MAF? It could be fouled if you over oiled your K&N air filter. A big affect on your gas mileage is your driving style. When I drive my truck with 32's and 3.73's I get about 16-17 mpg. When my Dad drove it for a week, he said he got about 21-22. He's way more patient, and less aggressive, so he has a totally different driving style than me, (I am the exact opposite) hence why he gets better mileage.

 

something wrong with that 2.5! ouch! to the OP; aare you sure your odometer is accurate? even for a 4.0 12mpg is pretty bad... got a check engine light on or anything?

 

that is pretty bad i have a 97 4wd explorer 4.0 Sohc and i got around 20 last summer and i have a heavy foot

 

wow. what are you all doing to your trucks? My stock 4wd 4.0 with an AUTO averages between 20 and 21 with 25 being max when I commute all highway to school.