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Old 06-09-2014, 12:50 PM   #1
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6 speed transmission "clunking"

Hello all, so I had the unfortunate occurrence of having a connecting rod (i think) punch through one of the cylinder walls of my jeep And with the amount it would cost to fix it and the state that it is in, its time to move on. I was looking at a 06 wranger with a v4 in it at a used car dealership today and I am going to go back and test drive it and take it to another garage, but without even moving it I noticed something weird. When I take the shifter, and i go across the gears (not actually engaging them but just moving it back and forth) I hear what sounds like a clunking at each end. It almost sounds like something is rocking back and forth, but I can't tell. Also, what do people think of the V4's? I know they don't have allot of power to them, and I know they aren't anywhere close to a strait 6, but, in terms of longevity and reliability, how do they fair? Also, its got 120K miles on it, but it looks like it is in mint condition (like not even a scratch except on the hook where it looks like a small branch may have fallen on it) and he wants about 12K. It seems a little low to me.

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Hunter Schade

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Old 06-09-2014, 12:58 PM   #2
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First off, there is no such thing as a v-4, it is a straight 4 or a straight 6.
As for your question, it has a lot less power, no additional gas mileage bump and is also a reliable engine, but probably not as reliable as the almight 6.

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Old 06-09-2014, 01:08 PM   #3
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Originally Posted by K.wag View Post
First off, there is no such thing as a v-4, it is a straight 4 or a straight 6.
As for your question, it has a lot less power, no additional gas mileage bump and is also a reliable engine, but probably not as reliable as the almight 6.
Ahhh, okay, as you can see i'm still new to jeeps :P. Thank you for the correction.
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Old 06-09-2014, 02:41 PM   #4
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The six speed is trash. 06 may not be "as" bad but there are still an ungodly amount of technical service bulletins or TSB for short. It's kind of a half a** recall that they don't want to have to eat. The clunking is normal and you have to give it time Inbetween shifts or risk losing Synchros early. I know for sure the 06 nsg370 had throw out bearing issues at around 10000 miles, as well as shift rail assembly issues shared with the 05. It's a Mercedes truck transmission and it's so odd that not many make it past 70,000 miles before taking a dump behind the 4.0 6 cylinder. Not to sway you away from what could be a good deal, it's just given my short lived experience over the last year of ownership there has been nothing but let downs where this tranny is concerned. Just recently it's gotten really hard to shift between 5th and 6th after 15-20 miles of highway driving. And there's no fix short of replacing the fork shift rail assembly. Too much money for this hunk of junk.
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Old 06-09-2014, 02:46 PM   #5
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second gear is really fragile in the 6 speed trans.
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Old 06-09-2014, 05:33 PM   #6
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second gear is really fragile in the 6 speed trans.
Same with 3rd through reverse. If it has ever been ground in reverse, EVER then it will most likely pop out right away every time and possibly pop out after a 1/4 mile of backing up. Don't ask, I tested after it popped on me one morning after sitting there all night. Backed into my spot then shut it off, never touched the shifter and it wasn't even what you could call a slope.

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