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Old 09-25-2013, 07:41 PM   #1
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Clutch issue...new Jeep. A bit lost...

What's goin on everyone?! Just picked up my first Jeep the other day. It's a 1990 Wrangler 4 cyl 5 spd. It's gonna take some work, but I'm in it for the long haul. I'm gonna be buying some land soon, and I'm looking to make this my little cruiser for out there. It actually looks like I should be able to get her goin in no time, as soon as I figure out this issue with the clutch...

There is absolutely zero resistance in the pedal for the first 90% of travel. You can tap the pedal with your foot, and it will bounce around. Once you actually press it ALL the way down, there is a bit of pressure for the last 2-3 inches of travel. I've tried bleeding the clutch like the manual says (bleeder screw coming out of the passenger side of the tranny). Went through about 3 full fills in the reservoir. I could hear something releasing inside the tranny whenever I loosened the bleeder screw.

Have I not bled the system enough? Or possibly the master cylinder?

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Old 09-25-2013, 09:46 PM   #2
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I'd bet the master cylinder. Are you getting decent pressure when you're bleeding it? It should put out quite a bit.

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Old 09-26-2013, 09:19 AM   #3
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Jokerchief, paging Jokerchief....

RastaP, welcome the Forum, the Hobby, the Obsession that is Jeep. I have a 91 w/the 2.5L/AX5 and recently battled some clutch issues (successfully, I might add!!!).

There's gotta be a leak somewhere, right guys? Check the hose for cracks, splits, etc. Check the the firewall in the engine bay or on the inside of the cab where the clutch goes through the firewall. If it's leaking, it's broke. $40 at autozone. Easy fix. Replace it and bleed it.

OR if it's leaking fluid from the bellhousing/bottom of tranny (like here:Click image for larger version

Name:	bell.JPG
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ID:	379633) your slave cylinder's shot and YOU GET TO DROP YOUR TRANSMISSION AND CHANGE IT!!!! WWOOOOOHHHOOOOOO!

Let us know what you come up with, we're here to help
-JDub
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Old 09-26-2013, 09:39 AM   #4
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Your all over it JWBooth. Great advice above. If there is no fluid missing it just needs to be bled or the master is bypassing internally.

These YJs are old and the internal slave cylinder clutch setups are finicky but work well after some new parts.

Read all and take a look and let us know what you find.
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Old 09-26-2013, 01:32 PM   #5
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Thank you guys for the responses, and great advice! I can already tell I'll make myself right at home around here. So, with some more inspection, this is what I've found:

There is a small amount of fluid on the firewall beneath the master. Also a bit of fluid underneath the tranny. I cleaned it off, and I'm going to head down and grab a new master cyl. now. If this doesn't solve the problem, I bet I'll find some more fluid down there, and I can start my Jeep hobby off with a tranny rebuild lol.

Also, JeepRich, yes there was plenty of fluid coming out of the bleeder when I opened it. Is this a good sign in terms of the slave?
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Old 09-26-2013, 04:30 PM   #6
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Question for the RastaPasta Mon: Was the master reservoir low/nearly empty when you first checked it?

Before my slave went out completely- over the course of a few days- it got progressively worse/weaker until the clutch was useless. I could start/turn the engine over in gear with the clutch mashed to the floor and Jeep would creeeeeeeeeep forward real slow. The slave died a slow death. Eventually I could bleed it a couple of times and get all kinda clutch pressure for a sec but the fluid was running out the bottom of the transmission as fast as I put it in and at that point I knew I was screwed!!!!
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Old 09-26-2013, 04:43 PM   #7
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One more thing mon, if the clutch/master/slave is F'd up you wouldn't necessarily need to rebuild the tranny. Y'know, unless you cooked the synchro's shifting w/o the clutch or if it was screwed to begin with. You just gotta drop the tranny or move it back far enough from the block to remove the busted slave and install the new one. Replacing the slave itself is ONLY a 15 minute job!!!





Buuuuuuut it takes somewhere between 3 hours and 3 days (in my case at least... yeah, really) to finally get to the damn thing to change it. Keep us posted.

-JDub out like tight rolled jeans
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Old 09-26-2013, 04:59 PM   #8
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Thanks for the responses, JW! The master was full when I got it.

I think the master was the issue. I've pulled the old one out and installed the new one. I'm just waiting for a buddy to slide through so help bleed the system. Buuut, when I pulled the old master out, the shaft had a ton of play in it, and the piston looked shot. I compared it to the new one, and it definitely seems faulty.

I'll report back with results soon. Keeping my fingers crossed.

Also, good to know that the slave is a simpler job than I had anticipated. Now I won't cry if the master doesn't solve the problem...
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Old 09-26-2013, 06:54 PM   #9
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you can gravity bleed it by yourself. open the bleeder till it drips and keep the master full, in a few minutes close the bleeder and you should be good.
I changed my clutch a while back and gravity bleeding worked good.
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Old 09-26-2013, 07:45 PM   #10
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She's up and runnin'! Just got back from a quick around-the-block test, and everything seems okay!

So now, the fun part...

I'm going for a "pre-runner"-esque type of build. I'll be grabbing some land in northern california, and need a reliable piece to get basically anywhere that I need to...

What's my next step, Jeep og's?
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Old 09-27-2013, 09:32 AM   #11
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Good to hear you're up and run'n!!!!!
Click image for larger version

Name:	jackazz.JPG
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ID:	382361
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Old 09-27-2013, 11:35 AM   #12
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Quote:
Originally Posted by JWBooth View Post
Good to hear you're up and run'n!!!!!
Attachment 382361
Lol, thanks much, man!
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Old 09-27-2013, 05:01 PM   #13
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SPOKE TOO SOON! Went out to take her for a little spin this morning, and checked out the tranny for leaks before I took off. Saw a couple drops, so I took her around the block and lost pressure. Got back a couple minutes later, and no fluid in the master. Lots of fluid coming out of the passenger side of the bottom of the tranny.

Should be the slave, ya?
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Old 09-30-2013, 09:57 AM   #14
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Well hell RastaP... yeah, I'd say your slave is done. That's exactly where mine was leaking when the slave completely went, and it happened quick.

And, sorry it took me a couple days to repost, haven't touched a computer all weekend, hope you got it figured it out.
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Old 09-30-2013, 10:35 PM   #15
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Quote:
Originally Posted by RastaPasta View Post
Thank you guys for the responses, and great advice! I can already tell I'll make myself right at home around here. So, with some more inspection, this is what I've found:

There is a small amount of fluid on the firewall beneath the master. Also a bit of fluid underneath the tranny. I cleaned it off, and I'm going to head down and grab a new master cyl. now. If this doesn't solve the problem, I bet I'll find some more fluid down there, and I can start my Jeep hobby off with a tranny rebuild lol.

Also, JeepRich, yes there was plenty of fluid coming out of the bleeder when I opened it. Is this a good sign in terms of the slave?
If you have that much pressure I'm guessing its probably the slave. You absolutely need a good trans jack if you're doing it yourself. I tried a cheap attachment from harbor freight a few years back and almost smashed my leg when the jack tipped.

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