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Old 02-17-2014, 06:40 AM
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transmission

I was messing around with my 02 and lost all gears in 2L the other day, was able to drive (limp) it home in 4H. Trying to determine extent of repairs I'm lookin at....transmission, transfer case, rear or front dif.... or all of the above? And looking for suggestions on upgrades as I'll be replacing some if not all the above!

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Old 02-17-2014, 08:17 AM   #2
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Pull the cover off the rear diff and check for damage and go from there. Was it making any noises while limping home?

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Old 02-17-2014, 08:22 AM
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No noise....thanks will check it out!
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Old 02-18-2014, 10:59 AM   #4
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Pull the cover off the rear diff and check for damage and go from there. Was it making any noises while limping home?
A little off topic but I have an 05 Rubicon with the 6 speed manual. Tranny wise running through the gears is fine but reverse is a pain. In wants to jump out and makes a grinding noise. I was told maybe a linkage problem but im not sure. Just want a few other ideas
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Old 02-18-2014, 02:12 PM   #5
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I too have the 05 6 speed. There is a TSB based exactly on your condition. This happens during a missed shift. This will not correct itself. Many have tried fluid swaps and so forth. Some help but for the most part it will continue to get worse until it won't go in at all. As for the no gear in 4wd-l, does it work in 2wd? If it does then it won't be your rearend. The two main things you speak about that lead me to believe it could be a transfer case or linkage. You say no gear in 4wd Low But you limped home in 4wd High. This basically narrows it down to the transfer case because the rearend and transmission would show the problem in 4wd Low or High. Now this could be as simple as some sort of shifter cable problem, where it will not allow it to engage back into 4wd Low after slipping out into neutral but would allow it to go into 4wd high or 2wd. I hope this helps.
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Old 02-18-2014, 03:40 PM   #6
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I too have the 05 6 speed. There is a TSB based exactly on your condition. This happens during a missed shift. This will not correct itself. Many have tried fluid swaps and so forth. Some help but for the most part it will continue to get worse until it won't go in at all. As for the no gear in 4wd-l, does it work in 2wd? If it does then it won't be your rearend. The two main things you speak about that lead me to believe it could be a transfer case or linkage. You say no gear in 4wd Low But you limped home in 4wd High. This basically narrows it down to the transfer case because the rearend and transmission would show the problem in 4wd Low or High. Now this could be as simple as some sort of shifter cable problem, where it will not allow it to engage back into 4wd Low after slipping out into neutral but would allow it to go into 4wd high or 2wd. I hope this helps.
So is it likely that I will have to pull the tranny and fix the linkage or is there maybe another way? What exactly did you do?
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Old 02-18-2014, 04:26 PM   #7
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From what I found. The scyncros were damaged. Replacement of them and the internal linkage is most likely. I currently have the vehicle at Woodstock Transmission in Bessmer Alabama. I am currently away for business in another state. I am not sure what all needs to be replaced. There is a plethora of information about this transmission in different articles. The technical bullitin has a reccomended specific proceedure to follow to repair this condition. I am following that along with a full inspection of internals that will include replacement of anything needed. I have also decided that I will fill the trans with Royal Purple fluid as it seems to do good in our transmissions.
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Old 02-18-2014, 04:32 PM   #8
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Could be your transfer case linkage needs adjusting which is a pretty easy fix. I lost all 4WD the other day because of it.

If it does end up being the linkage I would highly recommend looking at a Novak Shift Cable to replace it. Much better design and shifts like butter afterwards.
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Old 02-18-2014, 04:37 PM   #9
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From what I found. The scyncros were damaged. Replacement of them and the internal linkage is most likely. I currently have the vehicle at Woodstock Transmission in Bessmer Alabama. I am currently away for business in another state. I am not sure what all needs to be replaced. There is a plethora of information about this transmission in different articles. The technical bullitin has a reccomended specific proceedure to follow to repair this condition. I am following that along with a full inspection of internals that will include replacement of anything needed. I have also decided that I will fill the trans with Royal Purple fluid as it seems to do good in our transmissions.
Alright thank you very much

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