Clutch Pedal Frozen Need tech help - JeepForum.com
 
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post #1 of 10 Old 09-08-2009, 04:23 PM Thread Starter
for-play
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1991 YJ Wrangler 
 
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Clutch Pedal Frozen Need tech help

While shifting several months ago the clutch pedal locked up. Not a fluid type lock up but it felt like metal on metal. There was no play and I was damn near standing on it and it didn't move. I wiggled the pedal with my toe and it seemed to come undone and work right.

Move to today. Sitting in the drive through, depress the clutch and feel a couple of clicks in my left foot, transmitted through the pedal. Move up in line, try to push in the pedal, no joy, pedal locked up, jeep in first, trying not to crash into the car ahead of me while ripping it out of gear. I'm stuck there for a few minutes with the rigid pedal, can't put it into gear. I fool with it for a few minutes more and it starts to work.

I limped it into work and when I parked the pedal was frozen again. While having a co-worker sit and tap on the pedal, it eventually came free again. I had my hand on the master cyl and could feel something snapping and clicking in there, then it would lock up.

Any ideas what is broken? I will be doing a parking lot repair in the morning.

Help!!

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post #2 of 10 Old 09-08-2009, 04:28 PM
Mean Max
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That's exactly what my '91 did! The spring inside the master cylinder broke about 1/3 of the way from one end. The break left a sharp point that would dig into the side of the OE plastic cylinder & bind the pedal up as hard as a rock.

You need a master cylinder. Try Auto Parts Fast at RockAuto for a low price on a new one.

After replacing it, open up the old one & post up a pic of the spring if you can please. I never got a pic of mine.

Here's a write-up I did on master cylinder replacement.

Clutch master cylinder replacement

Max


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No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
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post #3 of 10 Old 09-08-2009, 07:31 PM Thread Starter
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Max,
I just got done swapping out the master and bleeding the system. I read your mc post before I posted the question and with your directions I was done in 40 minutes from the first turn of the wrench to the last drop of fluid. It sucked that I had to do it in a gravel and seashell parking lot.

When I got home I stripped the old mc down and the spring was broken into three pieces. It was obvious by looking at the bore that the tips were digging into the sides exactly as you described.

I am 240 lbs and couldn't move that little piece of wire!!! It was like someone had bolted the pedal in the up position.

Tomorrow at work I will post the pics or links to them anyhow. Feel free to use them and add to your tech thread if you like.
Thanks for the reply.
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post #4 of 10 Old 09-08-2009, 07:39 PM
buckshot500
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Dang Max!!!!

You got yet another one dead balls right!

Way to go.

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Well after I drained the oil, I ran water through the engine to clean out the gunk. (the guy who owned before me obvioulsy didn't know how to maintain the engine).

90YJ98XJ
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post #5 of 10 Old 09-08-2009, 08:41 PM
Mean Max
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Quote:
Originally Posted by for-play View Post
Max,
I just got done swapping out the master and bleeding the system. I read your mc post before I posted the question and with your directions I was done in 40 minutes from the first turn of the wrench to the last drop of fluid. It sucked that I had to do it in a gravel and seashell parking lot.

When I got home I stripped the old mc down and the spring was broken into three pieces. It was obvious by looking at the bore that the tips were digging into the sides exactly as you described.

I am 240 lbs and couldn't move that little piece of wire!!! It was like someone had bolted the pedal in the up position.

Tomorrow at work I will post the pics or links to them anyhow. Feel free to use them and add to your tech thread if you like.
Thanks for the reply.
Glad you got it going! At the time it happened to me, I couldn't even find 1 person that had ever heard of such a thing! But since then I've seen it around here a few times. Please do post the pics, I would love to be able to use them in the future to help explain what goes on when the spring breaks!
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Dang Max!!!!

You got yet another one dead balls right!

Way to go.
LOL! Thanks Buckshot! I guess even a blind squirrel gets a nut every once in a while, huh?
Max


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Quote:
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Max has a picture of every Jeep part ever made.
Quote:
Originally Posted by Benderff View Post
No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
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post #6 of 10 Old 09-09-2009, 08:41 AM Thread Starter
for-play
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Max,
Here are the photo links. Apparently I cannot post them as pics.

EDIT: Amazingly my synchros seemed to "heal" themselves overnight. No more 3 to 4, 4 to 3 grind and no double clutch into second. It is like having a new tranny. The stroke of the pedal has improved as well, it starts at the top now, not three inches down.


Piston assembly as removed from master cyl bore


Parts in relation to where they broke



Last edited by for-play; 09-09-2009 at 09:07 AM.
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post #7 of 10 Old 09-09-2009, 08:54 AM
Mean Max
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Originally Posted by for-play View Post
Max,
Here are the photo links. Apparently I cannot post them as pics.





Clicky-free!

Thanks for posting those!

Max


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Quote:
Originally Posted by UltimatE View Post
Max has a picture of every Jeep part ever made.
Quote:
Originally Posted by Benderff View Post
No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
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post #8 of 10 Old 11-24-2009, 08:59 AM
clean6xj
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thank you thank you thank you. (searched everywhere to find this thread.) Same problem. Clutch pedal locking up sometimes. I started to notice a clicking noise (from dashboard area) when depressing the clutch. Must be the broken spring. Much better than a worn throw-out bearing.
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post #9 of 10 Old 09-22-2013, 04:55 PM
SteveEarls
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Got a YJ a month ago and driving around today, I got stiff pedal twice. Then just as weird as it shows up, its gone. And I have the light metallic rattling an dash. Im a tech but still new to yj's. My first is and still is, is my 2000 tj. These yjs are flimsy and delicate. Lol thanks again for good advise.
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post #10 of 10 Old 10-07-2013, 09:34 PM
SteveEarls
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Thank you guys!

Just wanted to put a word of thanks out to you guys. Im a tech but this is my first yj. Had the stiff pedal twice and looked it up. Heard the rattle in the dash. Looked it up here, dead on. Thanks for such a good resource. well damn. Have a pic but it wont dl from my phone. Same **** tho.
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