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Unread 11-08-2013, 12:01 PM   #1
Snottus
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1999 XJ Cherokee 
 
Join Date: Oct 2007
Location: Norway
Posts: 22
XJ transmission problems

Hey,


Model: 1999
Make: Jeep Cherokee 2.5 TurboDiesel
Transfer case: NP231, with Tom Woods SYE-kit
Transmission: AX-15 5 speed manual
Various other upgrades, such as RE 3.5 liftkit, 32x11.5 tires...

So, the other day I was out for a drive, when all of a sudden I was unable to down-shift from 5 to 4. I tried the clutch several times, but it just wouldn't get into gear.
After some effort, with the clutch and accelerator, I was able to get it in gear and finish my drive, but I now have serious trouble getting my car into gear.

Whether cold or warm (engine) the problem remains the same - at random intervals, it's almost impossible to shift gears, and from time to time, the car will contine driving, even though I have the clutch pressed in. I have to shift it to neutral for it to stop. This behavior isn't persistent though, only happens occasionaly.

Getting it into reverse is also a hassle, angry grinding noises errupting, as if I wasn't using the clutch at all.

So, does anyone have a good tip for me? Or a link to a solution?

Any and all assistance/help will be greatly appreciated!


Thanks,
Harald

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Unread 11-10-2013, 06:40 PM   #2
ECL
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1998 XJ Cherokee 
 
Join Date: Dec 2005
Location: Easton, Pennsylvania
Posts: 276
Sounds a like a clutch slave cylinder issue. I suggest you start by bleeding the clutch. We have to do this to my son's 1990 YJ every few months. He has the the AX-5 & internal slave cylinder. The vent tube connection on the slave cylinder is a little loose. It weeps fluid when pushing the clutch in (bottom of bell housing is always wet) and allows a little air to be sucked in on the return. It's a hassle but not worth taking out the transfer case and transmission to fix it....yet.
Your AX-15 should have an external slave cylinder (I'm guessing because I'm not familiar with how it mates up with your diesel) but the same principle should apply. Look for leakage. If the cylinder is leaking externally (or even just leaking by internally), you should be ale to change it without dropping the whole drive train.
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Unread 11-11-2013, 07:08 AM   #3
Snottus
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1999 XJ Cherokee 
 
Join Date: Oct 2007
Location: Norway
Posts: 22
Oh okay, I'll check that out, thanks man!
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Unread 11-15-2013, 02:31 PM   #4
Snottus
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1999 XJ Cherokee 
 
Join Date: Oct 2007
Location: Norway
Posts: 22
Is it possible to remove and give the slave cylinder an ovehaul without draining the transmission?
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Unread 11-16-2013, 06:58 AM   #5
maimedsk8er
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1996 XJ Cherokee 
 
Join Date: Sep 2011
Location: guelph, ontario
Posts: 240
The clutch plate itself could have lost one of it's balancing springs. Upon under vehicle inspection it may seem fine but if one of those fell out it will make shifting very difficult.
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Unread 11-16-2013, 10:06 PM   #6
holysirsalad
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1999 XJ Cherokee 
 
Join Date: Dec 2011
Location: Kingston, ON
Posts: 306
Slave is external on a '99 AX-15, but if you're having these kinds of problems you should drain the transmission anyway. Bound to be chunks of metal in there.
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