Not much, you are driving a brick down the road. Change all fluids and spark plugs can sometimes help. How many mpg are you getting? Do you have a lift, big tires, etc...? I get right around 14 to 15 mpg...that's pretty normal.
Is there anything I can do to improve my gas mileage? It seems to be really really bad.
Just offering some help.
Rule 1: Please use the search function first
Rule 2: Don't complain about mpg's while driving a cube.
Rule 3: Don't ask about "the wave"
Rule 4: Just drive it and have fun...oh yeah, wave!
Yah, just do standard tune up stuff like plugs, etc, air filter, and keep the lead foot off the skinny pedal
Keep in mind winter blend gas is not the best, if you are in a cold climate.
Also, maybe changing out your o2 sensors "may" help as well. I've just changed all 4 of mine with NTK's as part of my maintenance as they never been changed. Plugs are new from day one of owning my jeep last summer. At first it seemed ok for milage but as winter set in, winter gas blends will be your achilles heel depending on location of course. Besides if your still getting under 4$ a gallon, be lucky. I pay around 5$ a gallon or 1.31$ a liter in my corner... Im sure in Europe they pay even more then I...
Fill the gas tank.
Note the odometer reading.
Drive it til the gauge is on E
Fill the tank.
Note how many miles you drove and how many gallons you had to put in to fill the tank.
Divide the number of gallons into the number of miles you drove.
Now you have the accurate MPG. Well almost.
Do this ten times and average it out.
If you do not know how to average it out let us know and we will help you. It's obvious you do not know how to calculate MPG.
Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.