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Old 09-24-2007, 02:51 PM   #1
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Hard shifting Manual Transmission????

94 wrangler with a 2.5 liter, manual 5 speed

over the last few days, it seems like my transmission has gotten extremely hard to shift,,,,,with 1st and reverse gear being the hardest most of the time....

it always worse from a dead stop...once I'm moving , the gears seem to shift good going up in the gears and shift decent going down in gears....every now and then, it just feels like I'm pushing into a wall..I "giggle" the shifter and push harder than normal and it will finally pop into gear...it never tries to pop out of gear

and sometimes they shift perfectly


any help would be appreciated

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Old 09-24-2007, 03:30 PM   #2
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slayer,

I'm not sure my explanation will be exactly correct. Somebody will correct me if I'm wrong, but I think I have your answer. I have experienced the same thing - in numerous vehicles with a manual transmission.

I believe it's because if the synchros aren't meshed right when you're trying to get it into gear, you'll experience this. All you need to do is drop it into second gear (or another gear) and just bump the jeep forward the smallest amount, then try to drop it into first (or reverse). It should drop right into the gear you need.

Hope this helps.

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Old 09-24-2007, 10:09 PM   #3
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let me guess. You just passed the 75,000 mark a short while back? I'm not sure if the 2.5 uses the same trans as my 4.0 did. I'd have to check, but with most pre '02 manuals (namely the lifted ones on bigger tires without a re-gear) the syncros get warn down. from the factory they have a beautiful taper on them. (cone, starts at about a 2" and widens to almost 3" over an length of 2.5") after your wrangler has seen some abuse, this collar shortens significantly. Essentially the small end of your syncro ends up being as big around as 2.75" do to the reduction in length.


I had to replace two sets of them in two separate YJ's. It'll shif ok if you rev match, and 2-3 of you gears will mesh fine if you row through them, the others will feel like there isn't even a gear there. It sucks, I know. I had a shop tell me it was my slave cylinder and clutch the first time it happened. I asked them to look at the syncros, when I picked it up they said that it was fixed and the syncros showed no wear, but the slave, master and clutch were all worn and had been replaced. I got back on the road and within 5 miles knew they had lied. when I got it back the second time, it came with a box of shredded syncros. They also cut a nice hole in my frame where they broke out a nut pocket... they're under new management now.
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Old 09-25-2007, 06:59 AM   #4
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I would check the fluid for the clutch. Sounds like the exact same symptoms that I experienced when the clutch wouldn't hold fluid because the slave cylinder was going bad.

Just FYI, the 2.5L has the AX-5 and the 4.0L has the AX-15 transmission.
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Old 09-25-2007, 09:27 AM   #5
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Quote:
Originally Posted by jeeperman View Post

Just FYI, the 2.5L has the AX-5 and the 4.0L has the AX-15 transmission.
I didn't know. I've never had a 2.5
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Old 09-26-2007, 06:15 AM   #6
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got in it this morning and fvelt like I would never get it to go into first...it finally poped in...left the driveway and all gears shifted perfectly the rest of the way to work...

I think the strange part is that the "hard shifting" just showed up out of no where!!!!

over a period of 2 or 3 days the shifting just got hard....

where is the fill hole for the transmission??? and what is the recommended oil to put in it??

my first wrangler, and i've only had it about 5 months..so I see I need to start doing a lot of reading!!!
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Old 09-26-2007, 06:28 AM   #7
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Quote:
Originally Posted by slayer View Post
got in it this morning and fvelt like I would never get it to go into first...it finally poped in...left the driveway and all gears shifted perfectly the rest of the way to work...

I think the strange part is that the "hard shifting" just showed up out of no where!!!!

over a period of 2 or 3 days the shifting just got hard....

where is the fill hole for the transmission??? and what is the recommended oil to put in it??

my first wrangler, and i've only had it about 5 months..so I see I need to start doing a lot of reading!!!
There is a resovoir under the hood, near the firewall, that is marked "clutch". It takes brake fluid. Let us know what you find!
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Old 09-26-2007, 10:09 AM   #8
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just went out and checked...the resovoir appears to be empty...I will go by and get some DOT3 brake fluid when I leave work today...

after I fill up the resivoir,,,what would be my next steps????

this Hydrulic cluth is new to me....

thanks for the replies up to this point
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Old 09-26-2007, 02:02 PM   #9
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The cup runneth over

Once you have filled up the reservoir you should be set.

There will be no need to bleed the master/slave cylinder. Mostly because you can't. Starting in 1994 the master cylinder, lines, and slave cylinder are all one piece from the factory. Presealed and prefilled. No "user servicable parts" inside. Sucks

I am having the same problem. A mechanic buddy of mine explained that the clutch might not be being fully disengaged when you push in on the clutch pedal because you are missing the fluid that provides the power to the throwout bearing. Or, in my case because the clutch plate fingers have fatigued and are no longer strong enough push the pressure plate free of the clutch disk.
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Old 09-27-2007, 08:50 AM   #10
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Back in Business!!!!!

filled the clutch reservoir and all is good!!!! didn't take hardly any to fill it up, but this morning it acted like a new transmission thru all gears...

thanks for all the replies and input!!!!
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Old 09-27-2007, 09:18 AM   #11
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Quote:
Originally Posted by slayer View Post
Back in Business!!!!!

filled the clutch reservoir and all is good!!!! didn't take hardly any to fill it up, but this morning it acted like a new transmission thru all gears...

thanks for all the replies and input!!!!
Glad you are back on the road! If you experience this again, you are more than likely going to have to replace the slave cylider, which sucks!
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I like "prick".

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Old 09-27-2007, 07:57 PM   #12
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Not a bad idea to drain and refill the gear oil in your tranny either...no telling how the PO drove it or where. I did this to mine and it shifted a lot better...I believe it had water in it as well.

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