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Unread 03-18-2013, 10:28 AM   #1
Adam013085
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Location: Carbondale, IL, Murphysboro, IL
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JK passed 100k miles?

I found an 07 JK 2 dr with 96k miles and they want 13k for it. Seems like a pretty legit prices but am unsure about the 3.8 motor longevity. If it was the 4.0 I would not have a worry in the world. What is the longevity of these engines or the JKs in general? It has the 6 speed manual tranny too.

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Unread 03-18-2013, 10:41 AM   #2
seadoons
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2003 TJ Wrangler 
 
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Im' curious about the same think. I found same thing but with 124K highway miles..asking $12K for it.
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Unread 03-18-2013, 10:48 AM   #3
Adam013085
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Im not really in the market for a JK right now but ran across this particular one. Also what is expected maintence for the 100k? Am I going to spend $1k or so there? If so, its not as good as it appears.
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Unread 03-18-2013, 11:30 AM   #4
442Wrangler
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I have had mine since 30k and have no issues at 97xxx. The 3.8L is just as reliable IMO as the old 4.0L and with proper maintenance should reach 200k and beyond.

See if the oil is full, coolant color, tranny fluid full/smell, air filter etc etc. I haven't done anything on mine except those things and the transfer case fluid change. And diffs but that was because of broken axles...lol

Remember to see if it tracks straight, has funny tire wear, and any idiot lights on. Try the 4WD, and I mean try.
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Unread 03-18-2013, 11:59 AM   #5
Adam013085
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I looked it up and it is a 1 owner on carfax so that makes me feel quite a bit better about it having close to 100k.
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Unread 03-18-2013, 12:16 PM   #6
Wavedatya
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Offer $10000 go from there. People always post higher price to leave wiggle room. That's what I do.

I can't speak on the 3.8 however look around at all the old jeeps still kicking around. They look beat up and still run. That says something. Not the same motor but its an indication of some sort to me.

I have almost 100000 kilometres on mine and no issues. Except when I try to do spark plugs lol.

Jeeps hold there value really well and finding a steal of a deal on one will be hard. But they're out there.
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Unread 03-18-2013, 02:41 PM   #7
pentastarguy
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2012 JK Wrangler 
 
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the 3.8 has been around for a long time. plenty of these with over 200000 miles and going strong in minivans.
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Unread 03-18-2013, 03:33 PM   #8
Gary08JK
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158400 K on the clock now still going strong. I have change out 2 u-joints and 2 ball joints plus my death wobble is gone now lol.

I have to change my spark plugs soon, any advice on that Wavedatya.
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Unread 03-18-2013, 04:23 PM   #9
Wavedatya
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Quote:
Originally Posted by Gary08JK
158400 K on the clock now still going strong. I have change out 2 u-joints and 2 ball joints plus my death wobble is gone now lol.

I have to change my spark plugs soon, any advice on that Wavedatya.
Lmao!!!!!

If you read the post "I blew my engine, oh boy..." That's me .

I managed to mess it up. But I had Installed a faulty plug or plugs and freaked out because my jeep sounded like a diesel Harley Davidson.

For the $43 in plugs it's worth it. Just be careful gaping to .50 and be gentle on them. 3/4 socket drive and a swivel extension for the passenger side. Driver side easy breezy. Passenger side is a pain. There will be two hoses in a clamp. Take the clip out and set the hoses aside. Don't take them completely out.

There will be a tube running from air intake. Simply remove it from the air box and set aside.

When removing plugs take your time. When removing boots it's hard to misplace them on wrong plug because the boot simply won't reach other plugs orbit will but barely and awkward. If you want number your boots and set aside.

When installing plugs insert gently and hand tighten. Don't cross thread. If you can't put plug in by hand and there is resistance it's not in correctly. Use a small amount of anti seize on plug threads and some dielectric grease inside the boot and plug back on spark plug carefully. That's it!
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Unread 03-19-2013, 06:56 PM   #10
LJameson
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1990 YJ Wrangler 
 
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Although the 3.8 isn't a powerhouse, it's a very long lived motor. Its common to have them come into the dealership I work at with 250,000 miles and running perfectly strong.

In the JK, the only common problem I see with them is the left side exhaust manifold cracking. Other than that we really don't have problems with them.
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