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Old 07-02-2008, 02:40 PM   #1
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wrangler milage expectancy

Hi, I'm new to the forum here and I'm looking to buy a Wrangler. I want to get a used one and I'm just starting my search. I got a few questions that I hope you awesome guys can fill me in on.

What's in average life span of a wrangler? I see a lot of them running up to 150,000 miles, but when do they generaly go ka-put? I guess that the main question i have.

I'm on a budget of about $5000 for a used jeep - what would be a fair deal for that price range?

Thanks!

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Old 07-02-2008, 02:55 PM   #2
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The straight engines, either the 2.5 or 4.0 have very long life spans, taken care of they are a half million mile motor with common life times of over 300,000mi.
I put over 350,000 on my Cherokee 4.0 5 speed before a stuck injector took out the #3 cylinder, I replaced with a japer rebuilt motor and it's fine.
In the case of a wrangler, mileage wise, 2.5L 5 speed will give you 20mpg, 4.0L gives around 18mpg, stock form. Almost everything is replaceable on them, easy to work on, parts are reasonable and easy to get. All my jeeps have been reliable as a rock. We have 4... 6 counting my sons.

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Old 07-02-2008, 03:21 PM   #3
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wow, 300,000 miles. that blows my mind. i didn't know they lasted that long.
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Old 07-02-2008, 04:17 PM   #4
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mines running just as strong as the day i bought it in 99.. its got 106k miles that IVE put on it..

definitely its been getting babied the last 2-3 years but the first couple years of owning it, it sat in the garage mostly.. with only about 2-3 years of it being driving DAILY and taking abuse..

my tranny went out at 104k miles.. cost 900 for the rebuild.. but from experiences of other local jeepers, id say its some-what common
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Old 07-02-2008, 04:42 PM   #5
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the question should be.. can I afford to gas up the jeep for a million miles.?
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Old 07-02-2008, 04:46 PM   #6
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the question should be.. can I afford to gas up the jeep for a million miles.?
lol - very good question.
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Old 07-02-2008, 05:35 PM   #7
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jeep straight engines are one of the most durable long lasting around, every bit as durable as the good ole 350, and better in my mind. all cast iron, and as long as you maintain it, it will keep going. seeing them over 150k is normal, and like rich already said 300k is not abnormal. my first xj was a 1990 i bought w/ 130k, i sold it for what i paid for it with 175k with no problems. my last xj i sold w/ 145k with no probs. and my current xj has 118k and i will drive it forever. can't go wrong with that motor.
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Old 07-02-2008, 05:37 PM   #8
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the question should be.. can I afford to gas up the jeep for a million miles.?
I've been driving the wife nuts again, with the 4.0ZJ and trip puter up on the overhead I got it up to 22mpg on a tank. She could never get it past about 18 till she watched me for a while, now when we fill up and go to say NJ I 'hypermile' it, quietly bump the AT into N on some of the hills, etc and got it up to 25 [she was taking a nap so she did not see what I was doing ], now she watches me like a hawk trying to catchup on my tricks.
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Old 07-02-2008, 05:55 PM   #9
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I'm not an complete expert when it comes to Jeeps specifically, but I can tell you what I see day to day when it comes to engine mileages, as I run an automotive quick lube facility.
The 4.0L inline 6 is an extremely durable engine that can go 200,000 +, if taken care of. Most all of the problems I see are a result of people running them very low on oil and the pump sucking air. I have a guy with a Cherokee that has over 315,000 miles on it and the top end has never been rebuilt. ( he has changed the oil every 3,000 miles faithfully) Keep in mind that you will occasionally replace items such as alternators, steering pumps, ect, throughout the life of the engine. The stock 4.0 engine takes a minimum weight of 10w-30 oil with most requiring 6 quarts. As the engine gets older I would recommend running 10w40 oil in the warmer months to compensate for wear on the oil pump and rings.
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Old 07-02-2008, 06:33 PM   #10
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ive seena 330,000 I6 on sale for $6000 haha, if you take care of them they'll last forever, you may have to replace everything else but the engine and the frame though
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Old 07-02-2008, 08:37 PM   #11
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I've been driving the wife nuts again, with the 4.0ZJ and trip puter up on the overhead I got it up to 22mpg on a tank. She could never get it past about 18 till she watched me for a while, now when we fill up and go to say NJ I 'hypermile' it, quietly bump the AT into N on some of the hills, etc and got it up to 25 [she was taking a nap so she did not see what I was doing ], now she watches me like a hawk trying to catchup on my tricks.
LOL, you could also drop the air pressure in the tires down to about 15 PSI when she drives it. (thats good for another 2mpg drop) It will drive her nuts! Then when she asks what you secret is, tell he you have to grease the crome muffler bearing.
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Old 07-02-2008, 09:15 PM   #12
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last one had 150k on it, ran fine, no leaks. Just take care of it and it should last.
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Old 07-02-2008, 09:31 PM   #13
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Not to mention that the "miles" you put on it when taking it offroad are WAY harder on it than city/highway driving.

10 miles of hard rock crawling, IMHO, should equal 1000 of city driving.

Long and short is that the straight 6, in particular, is a kick butt platform and Jeep was foolish to move away from it.
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Old 07-03-2008, 08:02 AM   #14
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I agree, the 4L is a great engine. I replaced one at 350K because the guy ran it out of oil, it ran great till that day. Im glad to have one under my hood. We'll see how the v6's pan out, but itll be a cold day in hell that I give up my 4.0.
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Old 07-03-2008, 10:07 AM   #15
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What year did they drop the inline six? Was it 97?
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Old 07-03-2008, 10:15 AM   #16
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They moved from the inline 6 in 2007 i think..with the new JK's. I beleive all the TJ's still came with 4.0L 6 i know for sure that the 2003 and the 2005 TJ's did have the straight 6.

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What year did they drop the inline six? Was it 97?
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Old 07-03-2008, 10:52 AM   #17
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about 1/4 have the inline six the other's have the inline 4 or at least thats what i found, the split could be differnt idk
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Old 07-03-2008, 06:11 PM   #18
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about 1/4 have the inline six the other's have the inline 4 or at least thats what i found, the split could be differnt idk
Are you saying that some of the early 2007 JK's have the inline 4.0L six ? If that is the case, then I might try and find one. The mini-van 3.8L is the reason I would not own an 07 or 08.
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Old 07-04-2008, 07:36 AM   #19
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everyone knows i'm not fond of the end of the 4.0, i'll never own a new jeep. and i don't like the minivan engine in there. BUT, durability wise, its been a good motor for a long time. probably the best minivan motor out of all of them, next to honda's 3.5. the 3.8 is a good motor, and i like the way it is set up, its not hard to work on.

so it is a long lasting engine, but i don't like it in a jeep.
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Old 07-04-2008, 03:08 PM   #20
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The Jeep I6 are good motors. My brothers 97 sahara is running great. Last I looked it had over 150,000. Last year It had alot of problems, but they were all common things that go out on all cars. If i remember right I had it for two days replaceing the alternater and everything that had to do with the coolant system. Ever since it runs like a champ. Infact, they are probabily almost as durable and perform almost as good as the new V6 chrysler is useing.
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Old 07-04-2008, 03:38 PM   #21
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Infact, they are probabily almost as durable and perform almost as good as the new V6 chrysler is useing.
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Old 07-04-2008, 04:06 PM   #22
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Just trying to get the hardcore I6 guys who dont want anything superior comming out riled up.
However, I would be intrested to see actual dyno numbers from both jeeps to see which one performs better across the entire power band. Chrysler may have used the same block in their minnivans, but the internal specs could be totally different as well as the tuneing.
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Old 07-04-2008, 05:18 PM   #23
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Just trying to get the hardcore I6 guys who dont want anything superior comming out riled up.
However, I would be intrested to see actual dyno numbers from both jeeps to see which one performs better across the entire power band. Chrysler may have used the same block in their minnivans, but the internal specs could be totally different as well as the tuneing.
I compared the dyno charts awhile back and remember that the I6 has mor torque, especially at the low end, and the 3.8 V-6 has more rated horsepower at a higher end. From what a teck at my local dealer, the engine is the same physically, it has jest been reflashed (software) for the wrangler.
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Old 07-04-2008, 07:49 PM   #24
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These are some stock power ratings I found that indicates the v6 puts out more hp and torque then the I6 from the factory. Were only talking like 12hp and 2 ft/lb difference. But still, I6 doesnt produce more power then the v6.


2008 Wrangler 3.8 V6 - 202hp and 237ft/lb (numbers from jeeps site)

2006 Wrangler 4.0 I6 - 190 hp and 235 lb-ft http://www.theautochannel.com/news/2...03/209374.html
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Old 07-04-2008, 08:16 PM   #25
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What chrysler NEEDS to do is make the 5.7 or 6.1L Hemi motors an option for the Jeeps. I didnt relize they put those motors in cherokees until I went there looking for minvan specs.
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Old 07-04-2008, 09:12 PM   #26
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What chrysler NEEDS to do is make the 5.7 or 6.1L Hemi motors an option for the Jeeps. I didnt relize they put those motors in cherokees until I went there looking for minvan specs.
The 5.7 HEMI will fit in the Wrangler. A guy up the road from me has in 06 Rubi listed on Cars.com with a full HEMI conversion and professional suspension lift. $20,000 OBO
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Old 07-04-2008, 09:18 PM   #27
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The problem with the V6 becomes evident when you are crawling over rocks and obstacles in 1st or 2nd and 4lo and make it 'over the top', on 4.0 you 'make it over the top' around 2500rpm, on the V6 you 'make it over the top' at 5000 rpm, 'making it over the top' at 5000 rpm make it real interesting as you literally take off and are busy getting your foot off the gas and on to the brake.
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Old 07-05-2008, 10:49 AM   #28
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Just trying to get the hardcore I6 guys who dont want anything superior comming out riled up.
.


SUPERIOR? i can't let that go by. v6 is not superior to the 4.0, if chrysler put a hemi in from the factory then we can say they brought out a superior motor. i've heard a lot of reviews from so called experts, and their main complaint is under powered. how come they haven't put that motor in their 6 cyl pick up trucks? they put that motor in to make it more road friendly for the yuppies that drive cars, and don't want to own a truck

congrats, you riled up a hardcore 4.0 guy

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