Sep 21, 2015, 04:02 PM
Last edit by: IB Advertising
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- Jeep Grand Cherokee WJ 1999 to 2004 How to Maximize Your MPG
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Gas Mileage Increase list?
Senior Member
Joined: Jun 2010
Posts: 849
Likes: 0
From: Slaughter, LA
Year: 1997
Model: Cherokee
Engine: 4.0L
None of that stuff will amount to much compared with altering your driving style. Keep your foot out of it and slow way down and your economy will go up.
Go here to find out how the pros do it.
http://www.cleanmpg.com/
Go here to find out how the pros do it.
http://www.cleanmpg.com/
Thread Starter
Seasoned Member
Joined: Sep 2010
Posts: 457
Likes: 0
From: Media, Pennsylvania
Year: 2000
Model: Cherokee
Engine: 4.0
Switch to this oil.
http://www.royalpurple.com/motor-oil.html
http://www.royalpurple.com/motor-oil.html
CF Veteran
Joined: Aug 2010
Posts: 2,112
Likes: 4
From: Wantage, NJ
Year: 1995
Model: Cherokee
Engine: 4.0 I6
Snorkel or Cowl induction is the only true CAI.
None of that stuff will amount to much compared with altering your driving style. Keep your foot out of it and slow way down and your economy will go up.
Go here to find out how the pros do it.
http://www.cleanmpg.com/
Go here to find out how the pros do it.
http://www.cleanmpg.com/
CF Veteran
Joined: Sep 2010
Posts: 2,844
Likes: 0
From: Warsaw, IN
Year: 2000,1990,1999
Model: Cherokee
Engine: 4.0
Uhm.....Do what I do and buy an "eco-friendly" vehicle...mine is an 01 nissan frontier 2.4l 2wd. I rarely drive my Jeep anymore, normally when its nasty out. Like tonight, 8-11" snow and ice.
Seasoned Member
Joined: Jan 2011
Posts: 313
Likes: 0
From: Charlotte, NC
Year: 2001
Model: Cherokee
Engine: 4.0
Over inflate your tires by about 2 pounds, put a lower viscosity motor oil in but not lower then 5w-20, check and possibly change all your other fluids(differential, front and back, Transmission), replace your clogged air filter, clean your throttle body, run seafoam through the tank for 2 tanks in a row(<my opinion solely and I only use Bp Gas), AND lastly BUT most important keep your RPM's below 2,000.. enjoy your +20mpg( or at least I do )
CF Veteran
Joined: Jan 2011
Posts: 3,228
Likes: 1
From: BELLINGHAM W.A.
Year: 1993
Model: Cherokee
Engine: 4.0
Senior Member
Joined: Jan 2010
Posts: 804
Likes: 1
From: New Orleans, Louisiana
Year: 1996
Model: Cherokee
Engine: 4.0L I6 MPI
Get an ecu chip
Exhaust
Change up gear ratio if u have tires that big
Go for a "ram air" intake And a throttle body spacer.
G3 Fuel economy Spark Plugs
Don't drive in 4wd on the street or when not needed. It takes more power to turn the front differential.
Exhaust
Change up gear ratio if u have tires that big
Go for a "ram air" intake And a throttle body spacer.
G3 Fuel economy Spark Plugs
Don't drive in 4wd on the street or when not needed. It takes more power to turn the front differential.
Newbie
Joined: May 2009
Posts: 3
Likes: 2
Model: Cherokee
Shouldnt of bought a lifted XJ if one was worried about miles per gallon. 
Brand new these things were only rated 17 city and 21 highway.
These threads are so pointless and always full of useless info. TB spacer is a waste and the e3 plugs are even more of a waste.
Brand new these things were only rated 17 city and 21 highway.
These threads are so pointless and always full of useless info. TB spacer is a waste and the e3 plugs are even more of a waste.
Thread Starter
Seasoned Member
Joined: Sep 2010
Posts: 457
Likes: 0
From: Media, Pennsylvania
Year: 2000
Model: Cherokee
Engine: 4.0
At the time that was of no concern considering gas prices were way down
CF Veteran
Joined: Oct 2009
Posts: 2,867
Likes: 16
From: Fauquier County, Virginia
Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO