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  #13  
Old 12-08-2014, 02:42 PM
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Re: transmission overdrive slip/chatter

so after more research, my next guess is my propeller shaft cv joint is bad. i do have leakage from the joint where the shaft hits the diff and there is a little bit of play when i try to move it back and forth. i have no idea what it entails to fix, but i'm guessing its not something i'm going to tackle myself.

is it possible to get a low mile shaft from a junk yard and throw it in, or get the cv joint from a store and do the repair that way?

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  #14  
Old 12-08-2014, 08:57 PM
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Re: transmission overdrive slip/chatter

Yes, rockauto has both cv joints for sale. Not that difficult to change. You can simply remove the whole shaft and testdrive to see if the noise is gone. 6 bolts on each side.
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  #15  
Old 12-08-2014, 11:57 PM
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Re: transmission overdrive slip/chatter

so just test it without a shaft at all? should i cover the ports at all?
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  #16  
Old 12-09-2014, 04:20 AM
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Re: transmission overdrive slip/chatter

No, not necessary to cover anything. There is no open connection with diff nor t-case. I have driven for a while like this, when i was waiting for the parts to arrive.
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  #17  
Old 12-10-2014, 08:34 PM
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Re: transmission overdrive slip/chatter

pulled out the front shaft and the chatter is gone. felt like quite a bit of play in it where it hit the xfer case. i'm gonna take the front drive shaft out of father in law's jeep, which is in my shop right now, to see if it's gone with another shaft in it.
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  #18  
Old 12-19-2014, 11:51 PM
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Re: transmission overdrive slip/chatter

kinda at a loss at this point. put a different drive shaft in and the problem continued.

i went to the dealer today to pick up mopar fluids to flush the diff again, but my pinion seal is leaking. so i'm guessing i should get that changed before dumping 70 bucks worth of oil in the diff?

i'm just not understanding why this problem only manifests itself above 50 mph. below that, i can put all the torque i can on the drivetrain and it doesn't do anything wierd. i have noticed that it does seem to pull to the right when the drive shaft is in, but it doesn't when it's out. could it be possible that the left axle is pushing harder than the right and it's slipping to jive with everything else? keep in mind, that both cv axles shafts were changed last year, and i'm starting to wonder if i installed the correct ones.
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Old 12-20-2014, 06:03 AM
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Re: transmission overdrive slip/chatter

If there is a lot of play on the T-case output for the front prop shaft, then the chain inside the T-case is streched. If it stretches too much, then the chain can start skipping teeth and making weird noises. Also the chain can touch the lower casing and wear away the aluminum.
Regarding the drive shafts, there is a difference between drive shafts for open diffs and drive shafts for quadra drive diffs. One is longer then the other. Now that you mention the pulling to the right, i would have a look at the drivers side drive shaft. Put the driver side on a jack and turn the wheel. If the shaft is properly connected, the Vari lok inside the diff should lock after a few turns and the drivers wheel should lock, or at least have a heavy resistance to it. If it doesn´t, then most probably the drive shaft is too short and not inserted into the splines of the diff.
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  #20  
Old 12-31-2014, 12:12 PM
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Re: transmission overdrive slip/chatter

Video clip of the sound my drive train makes when losing traction in the rear and the driver front has torque transfered to it. 2 seconds into video u can hear the popping. This is after I did another front different flush. I didn't see any noticeable problems on the visible gears. but I can't tell if the cv axle shaft is messed up.

http://youtu.be/FhjaXCanF9E
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  #21  
Old 01-02-2015, 03:47 AM
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Re: transmission overdrive slip/chatter

I can not make anything out of the video. Did you check the T-case fluid and/or change it?
If the T-case fluid is ok, i would pull the drivers side shaft again and check the splices.
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  #22  
Old 01-02-2015, 08:16 PM
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Re: transmission overdrive slip/chatter

the popping is about 2.5 seconds into the video. sounds like a mini gun going off.

the transfer case fluid was changed when tranny was changed. but next check is to take the axle shaft back out and check it. hopefully if it was slipping teeth, it just rounded out the shaft itself. I can't see getting the diff fixed being an easy job.
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  #23  
Old 01-03-2015, 04:41 AM
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Re: transmission overdrive slip/chatter

If you don´t find anything on the drive shaft, i would focus on the T-case. If the chain is stretched too much, it will skip teeth and make strange sounds. This will happen as soon as it needs to transfer more torque. The chain can be changed, the T-case needs to be split for this.
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  #24  
Old 01-05-2015, 02:12 PM
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Re: transmission overdrive slip/chatter

http://youtu.be/Y3KmlOJZmYQ

Better video of the sound it's making. just changed the cv shaft, still doing the same thing. thats the sound when its trying to get traction in the front.

I ended up put the new shaft in cause the new one was a 1/4 to 1/2 inch longer. The splines on the side gear looked ok from what I could see.

Transfer case then? How hard is it to open the case to get to the chain?
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