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Old February 6th, 2014, 05:42 PM   #1
mswierse
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Default 3.8L reliability?

Quick question... looking at another jeep, it's an 08 Sahara. Is the 3.8L a solid motor? The 4L ed heat, but I don't know much about kj's.

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Mark

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Old February 6th, 2014, 06:09 PM   #2
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Yes they are reliable. Some do burn oil though.

They feel like pigs though, especially with the auto, but if you pull side by side to a TJ with the 4.0 thr JK will pull away from it.

Also the auto can be geared super low due to its super high overdrive.
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Old February 6th, 2014, 08:15 PM   #3
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Ive got an 08 jk unlimited with 103xxx miles. It seems to be very reliable. At this point I think I'm doing half a quart every 2k miles.
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Old February 6th, 2014, 09:21 PM   #4
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Thanks for the replies! I attached a picture of the one I'm looking at. Hope to know more tomorrow

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Old February 7th, 2014, 06:41 AM   #5
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I've got no complaints so far with mine, with an auto, about 100K, doesn't really eat oil up. Of course, the magnuson helps me enjoy it more.
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Old February 7th, 2014, 06:46 AM   #6
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I've got no real complaints with my 3.8 though it does eat oil. Not the fastest but gets the job done
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Old February 7th, 2014, 06:48 AM   #7
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Biggest problem is not necessarilly power
Its the mushy transmission
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Old February 7th, 2014, 07:02 AM   #8
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6spd ftw. might be part of the reason i dont mind my 3.8
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Old February 7th, 2014, 06:07 PM   #9
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my 6spd in my 08 rubi was junk, would pop out of first gear alot , glad i got rid of it, the auto in my 2010 seems seems pretty good, although the exhaust manifolds crack like crazy on the 3.8's
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Old February 7th, 2014, 06:56 PM   #10
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Superchips=totally different trans feel
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Old February 7th, 2014, 07:01 PM   #11
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Watch the lower intake gasket for coolant leaking. My 07 has 72k and I just replaced it. Exhaust manifolds are good so far. Runs ok with 6 speed, but I could always use more power.
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Old February 7th, 2014, 07:14 PM   #12
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My friend has a caravan 3.8l with over 200k on it. He abuses that thing bad too.
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Old February 7th, 2014, 09:38 PM   #13
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Was looking at a 6spd, but drove and auto today and really liked it. Hoping to get it tomorrow.

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Old February 8th, 2014, 11:37 AM   #14
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That dark green looks nice. I have 70,000 miles on my 2010 and it does not burn oil (yet). Yes more power would be nice but in low range it will serve you well.
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Old February 9th, 2014, 06:39 AM   #15
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I'm really excited! Pick it up Monday :-)

Thanks for the input
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Old February 10th, 2014, 06:30 PM   #16
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I've got a 2008, has just over 107,000. I've had the superchips flashpac on it, definitely helps a lot. I use synthetic oil only, change it every 5-6K, burns about a 1/4 quart every 3,000 miles. No complaints.

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