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Unread 07-18-2007, 12:08 PM   #1
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Jeep milage lifespan?


Another noobie question -

How many miles makes a "high mileage" jeep? I know that it largely depends on how well the jeep was cared for, but on average, when do they start having issues? At 100k? 150K? 200k?

Regarding the 4.0l I6 - What kind of life does this motor have? Burns oil at 100k, throws a rod at 150, or runs like a top till 200?

Reason I am asking, I am looking for a "Cheap Jeep" (TJ), and most of those are high mileage - 100k-150k on a 4-6 year old truck. If it was a Honda or Toyota, I wouldn't worry, Chevy, you couldn't give it to me at 150, but a Jeep? I got no clue...



*** Jeepless for now ***

Do two guys that don't know what they are talking about know more or less than one guy that doesen't know what he is talking about?
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Unread 07-18-2007, 12:10 PM   #2
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take care of it, last long as hell. 4.0L is bullet proff.

ask for Maint's records..... I keep a folder on all my cars, makes the buyer feel better about buying it
2004 TJ (SOLD), 2010 4 Door 4x4 JK , 99 TJ , 99 WJ
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I'm not actually going for the wheeling, I just want to watch Ed drive his Jeep. :o
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Unread 07-18-2007, 12:11 PM   #3
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Most people report no extremely major problems ever. 200k miles seems to be about the average good running life of the 4.0 but thats not to say it cant go longer. Rear main seals are probably about the biggest problem you will ever face if you take good care of it.
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Unread 07-18-2007, 12:20 PM   #4
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2003 TJ Wrangler 
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A friend of mine had a chevy s-10 pickup with over 500,000 highway miles with no major repairs.I think it's all up to how you use/abuse a vehicle.As for Jeeps,my 95' 2.5 was bulletproof and ten feet tall.Oops thats a bad country song I knew I should have stayed in CT.
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Unread 07-18-2007, 12:29 PM   #5
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1998 TJ Wrangler 
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123,000 on mine and the only work I've had to do on it was replacing the radiator last year. I also replace the water pump and t-stat at the same time, but neither one was bad, I just figured I might as well do it as long as I was in the neighborhood. My rear main seal leaks enough that I'll probably replace it this fall or next spring. This isn't counting oil, filters, plugs, belts, u-joints, some diff bearings etc.....

Oh, I had a fuse go bad once also...........

All told, it's been the most problem free vehicle I've ever owned and I beat the crap out of it on a regular basis.
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Unread 07-18-2007, 12:39 PM   #6
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The 4.0L engine can run a very long time with proper maintainence. My TJ only has about 52k, but my XJ has 182k and still running strong. My friend's XJ is well over 200k and still doing well as well. It's not uncommon to see them going over 200k pretty regularly.
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Unread 07-18-2007, 12:43 PM   #7
Justin Brimm
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1998 TJ Wrangler 
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My Wrangler has 120k and literally runs like it is brand spanking new. My father's Comanche Eliminator is just shy of 300k and still eats Mustangs; it officially has the same hp rating as the Wrangler, but Chrysler stuck a custom cam, high compression along with other things from the factory into those Eliminators. Unfortunately it makes them near impossible to rebuild back to original condition.

Add: Both 4.0L by the way
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Unread 07-18-2007, 01:15 PM   #8
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My TJ only has 67k and radiator has been the only thing not routine. My family has had 4 Grand Cherokees and all have gone over 150k without any problems. One needed a tranny rebuilt at 180k but is fine now at 220k. All had the 4.0. I think the 4.0 is up there with any honda/toyota motor.
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Unread 07-18-2007, 01:34 PM   #9
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If I was buying a used TJ, I would check to see if it has been wheeled a lot. Look at the underside. One place I would not buy a used Jeep is where my parents live, around Ouray, CO. I came back from a visit last summer with some issues (leaky radiator and TC).

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