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Old 08-06-2014, 10:49 PM   #1
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Transmission sticking

Quick question. I have a 1993 yj with a 2.5L and a 5 speed ax5. The tranny shifts fine other than grinding a little if I don't shift slowly. The problem lies though, when the tranny gets hot (after 15 miles or so). After the tranny heats up, it is hard to get out of gear. I first noticed this just in 2nd gear but now it seams that it is doing it in most gears. Sorry for my ignorance, but I'm not much of a mechanic. Especially on trannies. Do I need a complete rebuild or just replace some parts? Thanks in advance, Jason.

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Old 08-06-2014, 11:44 PM   #2
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I'm sure someone who has experience with the ax5 will chime in... Do you know when the clutch fluid or tranny fluid was changed last?

My logic behind that is if the clutch fluid gets moving around you may loose pressure or something kinda like brakes since they're both Dot 3. For that you could try pumping the clutch a bunch and then seeing if it's hard to get out of gear. Then the fluid makes since to me because you're driving around then the pump stirs up a bunch of gunk. I don't know if either of those are right but they wouldn't hurt to change out

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Old 08-07-2014, 12:05 AM   #3
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Some times the clutch line swells from prolonged use and needs to be replaced because it's old, a fluid change can sometimes cure issues. Redline mt-90 is what I use, synchromesh also does good.
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Old 08-07-2014, 09:02 AM   #4
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Some times the clutch line swells from prolonged use and needs to be replaced because it's old, a fluid change can sometimes cure issues. Redline mt-90 is what I use, synchromesh also does good.
.

x2 on the redline here. I have it in both the YJ & MJ
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Old 08-07-2014, 10:32 AM   #5
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Yeah i would start with a fluid change and check all your mounts and then move onto the master/slave if the problem is still there. After that its the clutch components. I dont think synchros go bad all at once.
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Old 08-07-2014, 11:25 AM   #6
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Thanks guys. I will start with changing fluids. It has 108,000 miles on it, but only approx 2,000 of them are mine. I haven't changed the fluids and I'm not sure if the PO did or not. Thanks again!!
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Old 08-07-2014, 11:38 AM   #7
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I have about the same mileage on my ax5 and after doing the above mentioned work the trans feels great. Forgot to mention, check out your master cylinder fluid level.
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Old 08-07-2014, 12:11 PM   #8
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Yeah i would start with a fluid change and check all your mounts and then move onto the master/slave if the problem is still there. After that its the clutch components. I dont think synchros go bad all at once.
Bad synchros would only make it difficult to get in to gear, not out. Just so there is not misunderstandings
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Old 08-07-2014, 12:28 PM   #9
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Bad synchros would only make it difficult to get in to gear, not out. Just so there is not misunderstandings
Makes sense, just curious what does whistling mean.. like whistling Dixie? Lol
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Old 08-07-2014, 12:35 PM   #10
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Makes sense, just curious what does whistling mean.. like whistling Dixie? Lol
I guess you're on a smart phone app, there's sort of emoji things on the forum we use sometimes, the emojis dont show on phone apps
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Old 08-07-2014, 12:56 PM   #11
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I guess you're on a smart phone app, there's sort of emoji things on the forum we use sometimes, the emojis dont show on phone apps
Yep just started using it to upload photos. Thought maybe it was some WF term I was missing lol
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Old 08-07-2014, 02:34 PM   #12
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Bad synchros would only make it difficult to get in to gear, not out. Just so there is not misunderstandings
Worst case its your synchros. Mine does the same thing and that's my problem. A small chunk (tooth) of synchro came out when I last drained and flushed so watch for that. I need a tranny re-build.
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Old 08-07-2014, 02:47 PM   #13
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Worst case its your synchros. Mine does the same thing and that's my problem. A small chunk (tooth) of synchro came out when I last drained and flushed so watch for that. I need a tranny re-build.
I said the synchro cannot in any way shape or form make it difficult to shift out of gear. Worst case scenario, the mainshaft or needle bearings are severely worn causing the gear to not be on the same plane as the syncronizer hub, but you would have a very difficult time getting into gear in the first place. Most likely fluid issue, super dirty check balls that stick to the detents in the shift rails, or some clutch related issue (you shouldn't need the clutch to get out of gear though).
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Old 08-07-2014, 05:13 PM   #14
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Quote:
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I said the synchro cannot in any way shape or form make it difficult to shift out of gear. Worst case scenario, the mainshaft or needle bearings are severely worn causing the gear to not be on the same plane as the syncronizer hub, but you would have a very difficult time getting into gear in the first place. Most likely fluid issue, super dirty check balls that stick to the detents in the shift rails, or some clutch related issue (you shouldn't need the clutch to get out of gear though).
Right. My point is to check for any chunks coming out with the fluid just in case. Also, might help others that are searching for shifting issues.
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Old 08-08-2014, 12:36 AM   #15
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Thanks everyone. I appreciate all the feedback. I plan on changing fluids this weekend and hopefully that will fix my problem. Not sure if I just didn't type the right keywords or not, but I couldn't find anyone having the same problem when I searched. I'll change up my wording and see what is out there. Hopefully fluids do it though. Thanks!!!!
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Old 09-16-2014, 08:46 AM   #16
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So what happened? Did you get it fixed?
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Old 09-17-2014, 09:51 AM   #17
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Sorry I did not give an update guys. I replaced the tranny fluid with synchromesh. Completely fixed the problem. Thanks for all the input!!! Y'all saved me a lot of money.

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