Another question about my 2001 Cherokee Sport. It's all stock with no mods. Gas mileage I check it and I'm getting about 14-16 miles to the gallon.I have the 4.0 striaght 6 in it. I know they don't get great mileage but I was expecting better than that. Any suggestions on what I might do to improve my mileage. I've done all the obvious stuff like injector cleaner, better plugs and wires,K&N air filter, ect. I was thinking about new exhaust.

 

That's pretty good mileage doubt you can get any better than that unless you do some gears that's the most effective way to up any gas mileage on any auto

 

Heck I thought I was doing good to get 12 to 15 out of mine its lifted with 33s and stock 355 gears lol!

 

https://www.cherokeeforum.com/f59/25...-ideas-129050/
This thread has some pretty good tips in it.

 

That thread is full of snake oil

 

It still has some good tips in it

 

Well there is that one thread, where the guy put acetone in the tank lol

 

If its over 60k miles you should look into getting new o2 sensors. It'll cost you though since its an 01 there is 4 sensors

 

You are doing good. I probably get 8-10 with a similar set up! But it's should be sold in the next week...

 

My 1998 XJ in stock form was returning 16-18 around town and 19-21 hwy. I just had a 2.5" lift, 30" tires installed and this week adding a rear bumper/tire swing, as well as a front bumper with receiver hitch. I just filled up after the lift and tires were installed so have not figured mpg since the mods. Hopefully I will not loose much if any at all.

 

My 2000 xj gets 10 to 13 on same lift with 31s, not sure on gears? it has to be higher I'm guessing? it has a 120 MPH spedo lol and will run 100 ex police jeep

 

I am getting a solid and consitent 20 mpg for combined country and highway driving.

The truck is all stock and has 48K miles on it with a fresh tune-up. Pulling a trailer though it drops to 16.

 

If my speed is off by -5mph then my milage est is off as well right any one got a guess by how much

 

Well Thanks Guys, I guess I'm doing to bad at 15. I just thought my 2001 would do better than that. Oh Well

 

Ethanol free gas! Even after doing an injector swap on my 01 I watched the mileage steadily decline from an average of 20 mpg highway (which is the factory estimated mileage) to a poor 16. On average I lost 1/2 mpg every two months and when it got down to 16 I knew something had to be done. Filled up with enthanol free gas and a the went to 21.5 with the first tank and has averaged back out to 20 where it should be. Every tank of ethanol free stays in the 19-20 range. If I can not get to my regular gas station and have to by gas with ethanol the mileage will drop to 17-18 on the first tank, the second will drop back to 16-17. Ethanol free cost an average of 20 to 25 cents more per gallon but when I do the math regarding the fuel mileage vs fuel cost I actually spend $10-15 less each week on ethanol free gas.

http://pure-gas.org/