Clutch slipping in 4WD lo - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 13 Old 01-18-2017, 02:22 AM Thread Starter
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Clutch slipping in 4WD lo

I running a 2008 JK Rubicon with 35s & 6" skyjacker. Stock gears, tranny & drive shafts. Jeep just hit 70K miles and after changing my Diff oil today all the gears in both axles looked great. I decided to test out 4WD after the change and I noticed that my clutch is slipping only in 4WD LO. 2WD & 4WD hi is fine. I've had a gut feeling that my clutch may be going after not having the torque that I think I should have, but it hasn't slipped at all while driving in 2WD. It's been about a year since I had it in 4WD lo.

2 questions: Has anyone came across this problem & if the clutch needs to be replaced. Any suggestions? I'm looking for something robust.

thanks.
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post #2 of 13 Old 01-18-2017, 05:09 AM
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Skyjacker dosent make a clutch?

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post #3 of 13 Old 01-18-2017, 06:41 AM
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If it is slipping, the clutch is short lived for this world.


Here are the options offered by NorthRidge 4x4:


https://www.northridge4x4.com/scp/dr...lutch-flywheel


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post #4 of 13 Old 01-18-2017, 01:46 PM Thread Starter
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I agree, but why is it only slipping in 4WD lo. I'm wondering if it isn't the clutch. When I put the jeep in 4WD Lo. I can feel it engage and when I release the clutch I can feel torque. However, when I press the gas it just acts like its in neutral.

This only occurs in 4wd lo. everything else works just fine. My thoughts are 4WD lo is just too much torque on the clutch and that my clutch problem is about to show it's true colors ...

Can anyone think of anything i'm missing or had this similar problem?
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post #5 of 13 Old 01-18-2017, 01:57 PM
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Typically when a clutch is about to shit the bed, it slips in high gears first and then soon after your skipping in lower gears and immobile.

But the bottom line is that if the clutch slips at all, it's on the way out.

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post #6 of 13 Old 01-18-2017, 02:11 PM
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Does it move forward in 4wL? Does it just rev up real fast?

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post #7 of 13 Old 01-18-2017, 05:50 PM
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Quote:
Originally Posted by gt1guy View Post
Does it move forward in 4wL? Does it just rev up real fast?


Kind of like it's not in 4LO! The transfer case is likely in neutral and not 4LO.


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post #8 of 13 Old 01-18-2017, 05:53 PM
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Quote:
Originally Posted by Wannarun View Post
Kind of like it's not in 4LO! The transfer case is likely in neutral and not 4LO.


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Pretty sure anyone with 6" skyjacker on 35's is in 4wd all the time!
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post #9 of 13 Old 01-18-2017, 06:09 PM
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Re reading, I'm starting to think the above post is right. It's not moving at all in 4L? I'm betting the transfer case is in neutral, or not fully seated into 4L.

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post #10 of 13 Old 01-18-2017, 07:37 PM
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Yeah sounds like either the linkage is out of whack or the shift fork in the t-case is bent/worn. If the clutch was slipping in low range, it probably wouldn't even move in high. You were probably thinking about gear reduction backwards (there's more torque at the wheels, but less load required by the engine in low)
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post #11 of 13 Old 01-18-2017, 08:28 PM Thread Starter
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great feedback

All,

Thanks for the comments. I agree now that I think about it that clutch slipping normally starts with higher gears. As far as the jeep not going into 4WD lo ... I'll look into it tomorrow. It feels like it is going into gear ... but it also is acting like it's in neutral. I know that sounds confusing.

Any other ideas .. please let me know ... I'm open to anything.
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post #12 of 13 Old 01-18-2017, 09:50 PM
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Quote:
Originally Posted by staub2 View Post
All,

Thanks for the comments. I agree now that I think about it that clutch slipping normally starts with higher gears. As far as the jeep not going into 4WD lo ... I'll look into it tomorrow. It feels like it is going into gear ... but it also is acting like it's in neutral. I know that sounds confusing.

Any other ideas .. please let me know ... I'm open to anything.
You should be able to smell a slipping clutch easily. It doesn't take much slip to bring on the stink.

Reason I asked if it moves in low range was..A) If it doesn't move, as others have said, it might just be in neutral...B) If it just barely moves and revs up, that's the way 1st gear in 4low is normally. Top speed of 1st/4low is like 2mph.
I just bring this up because you said it's been a while since you've had it in low range.

If it turns out to be A or B, you have to report back so we can give you a hard time.

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post #13 of 13 Old 01-19-2017, 03:23 AM
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Because of the added leverage in 4 low, I would think the clutch would be much less likely to slip. The engine, clutch, and transmission barely feel any strain when you get moving in 4 low.

I agree with the above post, sounds more like something funny with the transfer case engagement to me.
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