I'm going crazy! I have done mostly everything I can think of that would help my mpg. To begin with I knew it would be bad getting 15-17mpg. But now I'm down to 11-12 with 1.5 wheel spacers & 245/65/17 tires everything else is stock. I have recently gotten my plugs changed and my oil done. Now I'm getting my fuel filter done as we'll. if anyone has any other pointers that would be great! Also thinking about a cold air intake but have been hearing mixed response about mpg increases.
I LOVE MY JEEP MORE THAN MY GIRLFRIEND :p
I recently put a catback on and now I'm showing 2 mpg less than what I averaged before on the overhead display (and I drive exactly the same, I'm not stepping on the pedal more). I have not yet done a full fill up though and only two partial ones and when I do I reset the display. I have a phone app I use to keep track as well but I used to only use it on road trips in fact it's called 'Road Trip" and it always averaged different than the overhead, the overhead has a reputation of being not so accurate. The App uses the simple math formula like we used to with pen an paper before the displays. If I were you I'd download an app or keep track with pen and paper as well. If you only recently added the spacers you might need to give it a few tanks and resets of the display to get closer to accurate. I've never been OCD about milage though but if the app turns out to show the same then I'm gonna buy me that bumper sticker "Not a hybrid/11mpg" :wink:
i guess the first thing to do is be sure all the fluids are at proper levels(engine, trans, differentials, etc)and your intake/outtake is working right(o2 sensors, mass airflow sensor). Keep on with the full tune up as that will only help out.
Cold air intake usually doesn't do much of anything with mpg, and when it does, it's usually in the .2-.4mpg ranges.
You should never rely on the overhead for anything other than general reference. If it drops significantly from what you should be getting, then you should start manually tracking it.
Lastly, real world numbers for short city driving is only in the 11-14mpg range. I take it you didn't change driving habits so what time frame did it change? between gas fill ups or what?
1995 ZJ ltd, 4.0 i6, *cough stock cough* 253,xxx and still pumping strong
1998 Chevy Cheyenne K1500, 5.7L Vortec, mostly stock
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Hate to tell you, but that's basically a normal tank for me. 14mpg is consistently what I get and I drive it grandma style. If you are taking off from lights like a rocket and consistently putting the pedal down a lot, its going to be just about what you're getting.
If there is one thing I have learned from my quest for better mileage, it is that the most effective thing to change is the driver style. Just making myself conscience of when I am accelerating, when I could coast, when I am not in overdrive, netted me at least 3mpg. Its difficult to do at first, but if you continuously do it for a good deal of time, eventually it will become second nature and you will find yourself slowing down on the highway when you don't need to be in a rush, coasting up to red lights so you can ride through them by the time they turn green, not pounding it up to speed, (but doing it at a reasonable pace so you can get up to overdrive faster instead of spending a minute accelerating, its a balance), etc.
99' WJ, 2.5" Rusty's, Bilstein 5100's, JKS TrackBar, Moog SuperTrailBoss
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