what kind of gas mileage
Junior Member
Joined: Feb 2008
Posts: 60
Likes: 0
From: Oceanside, CA
Year: 1989
Model: Cherokee
Engine: 4.0L
How are you people doing this? I am getting 14 HWY and about 12 city. I have a cold air intake, run a cold engine, have a throttle body spacer. I am running 31x10.5 on about 4.5-5.5" lift, but that is pretty much it. Is there anything else I can do to up my MPG
CF Veteran
Joined: Sep 2007
Posts: 4,869
Likes: 14
let it run warmer. lower the jeep a little.
CF Veteran
Joined: Oct 2007
Posts: 3,883
Likes: 6
From: W-PA
Year: 2001
Model: Cherokee
Engine: 4.0
That's what i get with NO mods. Be happy
Member
Joined: Feb 2008
Posts: 119
Likes: 0
From: East Springfield, MA - U.S.A.
Year: 99
Model: Cherokee
Engine: 4.0
Seasoned Member
Joined: Oct 2009
Posts: 283
Likes: 0
From: Indianapolis, IN
Year: 2001
Model: Cherokee
Engine: 4.0
TJ's came with 19 gallon tanks and 15 gallon tanks I believe. All the XJ's came with 20 gallon tanks. I was getting 17 mpg on my TJ (2" lift, 31's, 3:73 gears, 4.0, with a 5 speed) till a totaled it a few weeks ago, but that was if I was really easy on it. I just bought an XJ expecting it to get better gas millage than my wrangler but I took it from Indy to Ft. Wayne this weekend and only got about 14.5 mpg. I ordered some NGK v power plugs today. I plan on switching those out, running some lucas oil fuel treatment through the next few tanks of gas, and also plan on changing all the fluids. I did just put on a K&N filter but I seriously doubt to see any mileage gains there. Two other things I've heard a lot of people talk about are changing out O2 sensors, and running 89 octane fuel. I only have 67K on my XJ so I really doubt I need to mess with the O2 sensors, but I'm going to try a couple of tanks of 89 to see if the rumors are true. If the mileage gains out way the extra cost at the pump then I'll switch over to 89.
Last edited by Burgy; Oct 12, 2009 at 10:49 PM.
