Fuel Milage

[CHOPPER]

I was wondering what kind of fuel milage you folks with TJ's are getting.
My stock '06 Unlimited Rubi with a six speed trany, is rated at 17mpg in the city(EDIT: 15 mpg city not 17) and 19mpg on the highway, but it seems like no matter how I drive it, I stay at a fairly steady average of 11mpg which totally sucks.

I want to bring it to the dealer, but I want to see what you guys have to say first.

[PBR_Stitch]

My TJ and LJ both averaged around 15 in the city at the best. Highway would push it down to 12 easy.

Ron

[AZCA jeeper]

Yeah, 11 MPG seems pruty low:eek!: . My brothers '06 TJ SE averages 15 also.

I mean *PURTY*

[JK LORRAINE]

I got 587 kilometers to my 1st tank of gas with the JK...we got some real cold weather then the next tank was 541...
Not bad...
Lorraine:toung:

[fraynes1]

JK LORRAINE alot of that must be highway driving?

I get 400-450 depending on outside temps....mostly city driving.

[JK LORRAINE]

You are right, 90% hwy driving. How are you liking yours??
Lorraine

[fraynes1]

You are right, 90% hwy driving. How are you liking yours??
Lorraine

I love it, I was initially nervous as I didn't research it very much before buying.

Me being me I started looking on here and other forums and then heard about some of their problems, I have had mine since last November and can say other than getting my computer flashed (which seemed to increase gas mileage slightly) and a slight whistling noise on the freedom top which I will take to the dealer in the spring to get the TSB done, I have had no complaints what so ever.

I have never owned a Jeep before so can't compare it, but it rides extremely well. I am getting better gas mileage from the Jeep than my 92 Ford Ranger which is what the Jeep replaced.

[Rubimon]

How did you guys go from TJ gas mileage to your JK's? And whats a kilo? Are you guys drug runners?

Chopper, my son got 16-17 out of his first two tankfulls and has gotten 10 ever since. That is because he is now driving to school and back only 2 miles each way (not sure how many kilos that is 3.??) which is hilly, stop/start, wait in line, etc. Hopefully when he starts driving farther distances again it will go back up.

Hope that helps.

His is a stock 06 X

[Dutch]

I had a yk until just last dec. I drive 110 miles a day on the interstate. When I did what I was supposed to do I could expect 18 to 20 mpg regularly. Far less in town. I only mention this because I had the same I6 engine as you tj guys have.

[fraynes1]

How did you guys go from TJ gas mileage to your JK's? And whats a kilo? Are you guys drug runners?

Chopper, my son got 16-17 out of his first two tankfulls and has gotten 10 ever since. That is because he is now driving to school and back only 2 miles each way (not sure how many kilos that is 3.??) which is hilly, stop/start, wait in line, etc. Hopefully when he starts driving farther distances again it will go back up.

Hope that helps.

His is a stock 06 X

Didn't you know that all of us Canadians are drug runners:D

[Rubimon]

Didn't you know that all of us Canadians are drug runners:D

Didn't you mean "Didn't you know that all of us Canadians are drug runners, eh?"

[CHOPPER]

I'm gonna bring it into the stealership and see what kind of an excuse they make up for me...I mean see what they can do about it. Maybe it has a bad oxygen sensor or something....eh?:rotflmao1:

[Rubimon]

Chopper, let us know if they come up with something.

[JK LORRAINE]

Didn't you mean "Didn't you know that all of us Canadians are drug runners, eh?"

...SOME OF US RUN BOOZE......

JK LORRAINE

[CHOPPER]

Chopper, let us know if they come up with something.
Will do:yup:

I set up an appointment today with the service dept.
The guy asked me why I wanted to bring it in, so I told him that I have a few reasons.

#1-There's a recall on the clutch master cylinder rod which connects to the pedal (something about the possabilty of the rod breaking).

#2 They still owe me an interior Simonize job

#3 The crappy fuel milage.
Which he all ready tried to give me a few lines of B.S. about.
When I told him I changed the oil at 1000 miles he tried to suggest that I put the wrong oil in it. I told him I used 10w-30 (which is what the owners manual calls for) and he told me he thought it was supposed to take 5w-20 or 5w-30. Then he said that the engine isn't really broken in 'till around 10,000 miles... A''hole!. If he thinks I'm gonna run this vehicle for ten thousand miles at 11 MPG before something gets done to check it out, then he needs to pull his head out of where ever he's got it stuck.
So I think I might have to make up a few B.S. lines myself to give him, which will make them actually have to hook up the computer and really look into it.:D Something like...
"Um...I think I saw the engine warning light come on a couple of times, but...it went off so quick I'm not sure" :thinking:
I hate having to play the game "I can act just as stupid as you".:naw:

I've read that a computer "flash" did wonders for the JK's maybe something like that will work on my LJ as well. :question: I know that when I get "flashed" by the ladies it sure does wonders for me :eek!: shwing!!! :thumbs:

[B-MAN]

Wow, worried about milage...I think you bought the wrong vehicle ........Y'ALL :D



I Don't even pay attention any more, when the Jeep is empty I fill it, Lucky if I get 7MPG, when it's cold outside I just leave my truck run at high idle all day and night long, some time I just get to the gas station and back on a tank...Y'ALL


I did install a custom gauge so I know when it's time to fill again...Y'ALL
http://www.members.shaw.ca/jeeper/FuelGuage.jpg

[B-MAN]

I had a yk until just last dec....



What's a "YK" ?...I'm just going to assume you meant "YJ".

[CHOPPER]

Wow, worried about milage...I think you bought the wrong vehicle ........Y'ALL :D

I knew that they're not the best on gas when it comes to fuel milage.
And if I was runnin' 33's or 35's for tires with different gearin' then I would
expect 11 MPG. or even less.
But when I pick up a new vehicle, completly bone stock from the dealer , and the tag on the window says ( I got it wrong in my first post) 15 MPH city and 19 MPH highway, then I sort of expect to get something a little better than 11.

On a different note: I think that I'm gonna start looking a little deeper into alternative fules. :thinking:

[B-MAN]

...But when I pick up a new vehicle, completly bone stock from the dealer , and the tag on the window says ( I got it wrong in my first post) 15 MPH city and 19 MPH highway, then I sort of expect to get something a little better than 11...


I bet you could get those numbers if you drove it in perfect conditions with a really light foot, that's how they come up with those numbers (never go above 2000 rpm and never over 50MPH on the highway and never see a hill nor a headwind) You can't really tell me you actually expect to get those numbers in the real world:naw:

[CHOPPER]

I bet you could get those numbers if you drove it in perfect conditions with a really light foot, that's how they come up with those numbers (never go above 2000 rpm and never over 50MPH on the highway and never see a hill nor a headwind) You can't really tell me you actually expect to get those numbers in the real world:naw:

Hey man, it would be nice, don't you think. Wouldn't it be nice if something like truth in advertising really existed?
If someone puts something in print, it better damn well do what it supposed to.
Too many folks sit back complacent and eat the sh-t that their being fed.
They need the consumer more than we need to buy their stuff, but too many consumers are willing to just eat the crap instead of sticking up for themselves.
It would be nice if large enough numbers of people could get organized and boycot some of these big companys once in a while to shake things up a bit and let them remember who really needs who,
but everybodys out for themselves instead of just being out for your fellow man and sticking up for one another. This world is really screwed up.

So many people out there telling lies, it's just accepted as commonplace. Then when someone comes along telling the truth nobody believes them.
What ever happened to a mans word is his bond?
I do my best to make sure that if someone tells me something then they better follow through with what they said or have have a damn good reason (not just an excuse) for not being able to.
I always do my best to fullfill what ever I say I'm gonna do. It's not easy but I try my best...I really wish more people would do the same.
Don't you??????

[B-MAN]

UR not a very realistic person are you, but go ahead and make some poor tech's life as misserable as possible, I bet they love to see you walk through the door.:rollingeyes:

[CHOPPER]

UR not a very realistic person are you, but go ahead and make some poor tech's life as misserable as possible, I bet they love to see you walk through the door.:rollingeyes:

It's not that I'm not very realistic...I was just born in the wrong time period:nuts: :LOL:

And since I only have about 1500 miles on my rig so far this will be the first time that I am bringing it into the service Dept.,
so they don't know what they are in for yet. But we'll see how things go.

I've been a diesel mechanic for almost 20 years now and this is the first new vehicle I have ever owned,
it's also the first computerized vehicle for me. So I'm not gonna feel to good about having to let someone else mess
around with my ride. But they are also gonna have do some fancy talking if they want to try to pull the wool over my eyes.
I know what it's like to be in their shoes so I'm willing to cut them some slack...as long as they're straight with me and don't try to BS me.

Once I get ahold of a diecent OBD 2 reader then I'll feel a little better I've been checking them out. I've never needed one
up to this point, and the one we have at the shop is set up for Internationals, Macks, Cummins, Detroits. Only heavy equipment
because we don't work on cars there.

[MJS_Jeep_888]

Hey there Chopper.

Allow me to chime in here, because I think that B-Man isn't playing nice - his tone is rude and condescending, Y'ALL, and there's nothing wrong with what you've written... if anything, it seems like he might be trying to p*ss you off (flame-baiting, I believe it's called?)...

A man's word SHOULD be his bond - yes, humanity (and society) are flawed, but if we fail to at least TRY to live up to our ideals, then there's no hope of things ever improving. The truth is more than some abstract concept - it does exist, and I agree that people (and corporations) need to be held to their word. I'm with you, bro.

As far as the mileage thing, I have a JK, not a TJ, but:

My first tankful, I got roughly 14 mpg (while driving it sort of easy, but hard at times for a good break-in tank). My mileage computer claimed I was getting around 16.6 mpg...

I'm still on my second tankful, and just installed my CAI, which is now making my mileage computer show an instant 2 mpg improvement (up to 18.1) - I'll believe it when I see it; I'm expecting MAYBE 16 mpg, with mostly highway driving, but from what I've read, Jeep engines (I6 or V6) don't really hit their peak efficiency until they're "seasoned" at over 3000 miles. You're the 20-year veteran mechanic, and maybe I'm dead wrong: you tell me.

We all know that Jeeps aren't the most fuel-efficient vehicles out there - that said, I think that 11 mpg is just pathetic, and unacceptable (particularly since you mentioned in another post that you drive without using 1st gear much - that alone should be netting you some gas savings!). I'm hoping that your engine will "season" itself soon, and you'll start to see better than 11 mpg - that's H1 and Ford Excursion territory!

Keep on keepin' on, and don't let some jaded youngster ruin your outlook - you're clearly right on. :D

[B-MAN]

Hey there Chopper.

Allow me to chime in here, because I think that B-Man isn't playing nice - his tone is rude and condescending, Y'ALL, and there's nothing wrong with what you've written... if anything, it seems like he might be trying to p*ss you off (flame-baiting, I believe it's called?)...


...Keep on keepin' on, and don't let some jaded youngster ruin your outlook - you're clearly right on. :D



LOL-eh,... OK then...Youngster, thanx for coming in here a sorting my shat out :rollingeyes:

[MJS_Jeep_888]

LOL-eh,... OK then...Youngster, thanx for coming in here a sorting my shat out :rollingeyes:

When you have something positive to say, I'm all ears. :yup:

[B-MAN]

It's not that I'm not very realistic...I was just born in the wrong time period:nuts: :LOL:

And since I only have about 1500 miles on my rig so far this will be the first time that I am bringing it into the service Dept.,
so they don't know what they are in for yet. But we'll see how things go.


Only 1500 miles,....I don't think the engine will even be close to getting you real fuel numbers until at least 6-8000miles, ...


...I've been a diesel mechanic for almost 20 years now and this is the first new vehicle I have ever owned,


speaking of diesel, my truck just rolled over the 20,000mile mark and it's still only getting about 14-17MPG on the highway ( @ 65MPH pending weather conditions) but it's a far cry from the 11-14 I was getting in the first 5000miles, I doubt I'll see it level off uuntil I hit 30-40,000 miles


Anyway all I'm trying to get at is I don't think you should worry about the crappy milage yet, give it a few miles, I didn't notice any better milage until mine was at about 8000km, then the mod's began and it all went for shat again until...



Feel free to Jump in here MJS_Jeep_888 and sort me out :toung:

[B-MAN]

When you have something positive to say, I'm all ears. :yup:



Wow, that makes me feel so much better:bowdown:

[MJS_Jeep_888]

Wow, that makes me feel so much better:bowdown:

I see you've found your place, bowing down to your superiors. We're cool now. :wave:

Edit: OK - that was a little harsh - but enough already... don't know who or what you're pissed at, but take the negativity elsewhere bro! :cool:

[B-MAN]

I see you've found your place, bowing down to your superiors. We're cool now. :wave:

Edit: OK - that was a little harsh - but enough already... don't know who or what you're pissed at, but take the negativity elsewhere bro! :cool:

...talk about glass houses :lame:

[MJS_Jeep_888]

...talk about glass houses :lame:
Yup. :yup: And WHO started throwing those stones? Enough already - you suck, I suck, we both suck. Oh well.

[Rubimon]

Let's stay on topic guys..........I believe it was gas mileage. Don't want to move your threads to the Testosterone Section. Do we even have one of those?:thinking: ...Maybe a good idea to get one started!:naw:

[CHOPPER]

As far as the mileage thing, I have a JK, not a TJ, but:
from what I've read, Jeep engines (I6 or V6) don't really hit their peak efficiency until they're "seasoned" at over 3000 miles. You're the 20-year veteran mechanic, and maybe I'm dead wrong: you tell me.

You may not believe this, but in my whole carrier as a mechanic I have never had to diagnose a vehicle for getting poor fuel economy. If I was the one who owned or drove the vehicles then this issue may have come up sooner for me.
In the past , the vehicles I have personally owned always got fairly decent gas milage. And if they didn't it was for obvious reasons and was known from the start that the fuel milage was gonna be crap. And this stuff about new vehicles getting poor gas milage untill they're well brokne in is news to me.
I may have been a diesel mechanic for 20 years, but that doesn't mean I know everything:naw:
The one thing you will never, till the day I die, hear me say is that "I know it all".
Buying this vehicle has so far been quite the learning experience.
I too came across something that after reading it made me wonder if the fuel milage might get better in time. I guess that's just one of those things that I'll have to wait and see to believe. But still, untill someone can show me the hard proof that there's nothing that's malfunctioning and the milage that I'm getting now is the best it's gonna be without doing any modifications, then I'm just gonna keep on thinking that there's something wrong. If I don't get satisfaction and I end up having to find out for myself...then so be it. But while it's under warrenty, I have to let someone else try to figure it out first.
Which gives me a very uneasy feeling.

CHOPPER

[B-MAN]

If I had your skill set as a deisel tech I'd be well on my way to doing a Cummins 4BT swap, hard to give up the Warranty but IMO it would be the perfect TJ powerplant....Hmmm...

[CHOPPER]

If I had your skill set as a deisel tech I'd be well on my way to doing a Cummins 4BT swap, hard to give up the Warranty but IMO it would be the perfect TJ powerplant....Hmmm...

Believe me I was thinking about that even before I got my Jeep.(sticking a diesel in it that is:yup:
If I had the money and time right now I would go with a Cummins QSB3.3 instead.
But money, or really the lack there of, is slightly in control of my world at the moment. Plus, I bought a brand new vehicle so I wouldn't have to worry about screwing around with repairs for a while. This is my daily driver and I have no plans on turning it into a project vehicle....yet. For now I'm just gonna do a few things here and there to give it some of my own style.

MONEY, MONEY, MONEY......Got any of that evil stuff you can't use???? I'll gladly take it of your hands.

Any play dough that I'm saving up right now is gonna go into my motorcycles.
Summer is coming on fast and I have a ton O'stuff to take care of on them.
So you see ... my bikes are my project vehicle's now (instead of my old used to be daily driver which wasn't worth throwing any more money into), and my house is a never ending project in and of itself, but that's a whole other thread

This thread is asking the question "What kind of fuel milage are you getting in your stock TJ (Unlimited Rubicon)?...(If there are any more still out there:rotflmao1: )

[CHOPPER]

Well...I brought my Rubi to the dealer so that they could work on the fuel milage problem, the clutch master cylinder rod recall and also the cruse control self accelerating problem (which I forgot to mention in my earlier posts).

Since I had told them that the engine warning light came on once but never came on again, and also the cruse control would sometiimes not stop accelerating when I released the accelerate button, they connected their computer to the vehicle and found that there were no stored fault codes. So they flashed the computer to be on the safe side. (Which Is what I hoped they would do). They also said that they couldn't find any problems with the fuel system, and proceded to tell me that the vehicle wouldn't be fully broken in untill it hits the 6000 mile mark, and the fuel milage might get better by then. He also said that there are additives in the gas, which make vehicles get crappy milage.

Anyhoo...After picking up my vehicle I noticed that the engine didn't seem to bog down quite as much as it used to when I stepped on the throttle on the highway, in the higher gears. I filled the tank the first chance I got, and then after I had driven it (the same way I normally would without doing anything special), and had used enough fuel to warrent topping off the tank, I took down the numbers and figured it out, and found that this time my vehicle got 15.9 MPG.:D (this is with a equal combination of city and highway driving)

Now I feel beter.:yup: At least now my ride seems to be getting the milage that it's rated to get. I'll be checking it out a few more times though, just to be sure.
And on another good note...I had brought my vehicle in at 10:am, and I got the call that it was ready, and I could pick it up, at 2:pm....Not bad.

PS:
My vehicle didn't need the recall because it was built 4 days after the end recall date.

[MJS_Jeep_888]

Good to hear - we all know that the EPA ratings are bulls... but you're at least supposed to be in the ballpark. Glad that it's improving for you - I've yet to see 15mpg with my JK, but I'm also just over 500 miles on the engine...

[IanUtica]

The EPA rateings I have found to be fairly accurate as I have had 4 brand new vehicles in the last year and a half. My 05 Grand cherokee with full time all wheel drive and the 4.7 got above what it was rated at, my 06 dodge ram quad cab 4x4 with the 4.7 gets over 20 on the highway and its rated at 19 highway! My 07 focus was rated at 37 highway and it got 32 but thats cuz I drove it 80 mph to dc and back but had I did the speed imit it would have been in that area. Now my 07 JK got 19 to 21 on the highway right off the showroom floor until the lift and 35's that brought it down to about 15 on the highway! Next up are some intake exhaust mods to try to get some back and possible chip.

Now my next question, why is the 4.7 not offered in the JK as it seems to be a good motor and gets 20+ in my big ass quad cab 4x4 full size pick up and has alot more power than the 3.8 as well!!

[Rubimon]

Now my next question, why is the 4.7 not offered in the JK as it seems to be a good motor and gets 20+ in my big ass quad cab 4x4 full size pick up and has alot more power than the 3.8 as well!!

Early explanations of this were that DC was required to meet certain 2007 front end crush zone crash ratings. In order for this to happen they had to use the 3.8 which gave them the space to do this without lengthening the front of the jeep. Tooling was worn out on the beloved I6 they had used in the past. It was also a longer engine not giving them the room to meet the standards. They decided, for economical reasons, to use an already proven engine that they had in their line-up.

Not sure how factual the explanations are but that was written many times over in the early hours of the JK. We will see if these reasons hold true in the future as engine options change down the road.