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-   -   GPM Boost (http://www.wranglerforum.com/f282/gpm-boost-221788.html)

rmiracle 02-24-2013 09:07 AM

GPM Boost
 
Is there anything I can do to improve my gas mileage? It seems to be really really bad.

Crazyflyingplastics 02-24-2013 09:11 AM

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.

Atthehop 02-24-2013 09:20 AM

Take the money you would use to buy the MPG devices that claim to and buy gas.

rmiracle 02-24-2013 09:57 AM

I'm currently running stock tires and no lift. I'm not sure on the mpg but it's looking like I'll get around 50 miles to a 1/4 tank in the city.

Shark_13 02-24-2013 09:58 AM

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.

Crazyflyingplastics 02-24-2013 10:09 AM

Quote:

Originally Posted by rmiracle (Post 3412943)
I'm currently running stock tires and no lift. I'm not sure on the mpg but it's looking like I'll get around 50 miles to a 1/4 tank in the city.

you may have to drive a bit further to get a better idea of the avg mpg. And you definitely can't just go by with what the gas gauge says, it's not very accurate.

When you did the math, how many mpg are you actually getting when you fill up? miles driven divided by how many gallons you put in.

bostiguy 02-24-2013 10:29 AM

Quote:

Originally Posted by rmiracle (Post 3412787)
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!:whistling:

WaterDR 02-24-2013 10:37 AM

Define bad?

If you are getting 15 mpg and you hate that then sell it.

If you are getting 10 mpg then you have a problem that needs to be fixed.

If you are getting 14.5 than check the air in your tires etc..

Above all else, don't have a lead foot.

rmiracle 02-24-2013 10:40 AM

I'm probably just used to driving my wifes mazda that gets outstanding gas mileage.

bondosgto 02-24-2013 11:08 AM

Quote:

Originally Posted by rmiracle (Post 3413072)
I'm probably just used to driving my wifes mazda that gets outstanding gas mileage.

try going from a geo to jeep.
honestly, change plugs, air filter, oil, and O2's. I battled bad mileage for a couple tanks, bit the bullet and did the sensors.

RevCo666 02-24-2013 11:18 AM

Quote:

Originally Posted by Shark_13 (Post 3412946)
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.

X2

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...

As they say, dont like it? Get a prius!!!

Atthehop 02-24-2013 12:31 PM

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.

WaterDR 02-24-2013 05:22 PM

Folks, lets be clear, unless the thing is getting poor mpg for a jeep doing that maintenance will do nothing.

First, get a baseline. If its in range, than that is what it is.

bondosgto 02-24-2013 06:13 PM

has the speedometer been calibrated for axle and tire size?

Atthehop 02-24-2013 10:19 PM

Quote:

Originally Posted by bondosgto (Post 3414618)
has the speedometer been calibrated for axle and tire size?

Sounds like he is all stock so no recalibration should be needed. We have no idea what he thinks is poor fuel economy.


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