1991 Jeep Wrangler - Clutch pedal has lost pressure

Can't push clutch pedal in - JeepForum.com

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Dec 11, 2010 - 7 posts - ‎3 authors
Driving home last night and the clutch pedal falls to the floor. ... Forums > TJWrangler Technical Forum > Can't push clutch pedal in ... Comes back up but then Ican't push it back in at all, even trying to stand on it, won't budge. Clutch locking up?
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Oct 5, 2010 - 22 posts - ‎7 authors
With the engine off, i can push the clutch in, and shift through all the gears ... to move - the clutch isn't disengaged even with the pedal fully depressed. .... Also, trying to bleed the system, can't find the bleeder screw. .... 1991 Jeep Wrangler Stuck In Gear? jeffasel, YJ Tech Forum, 5, 10-19-2010 09:42 AM. Getting difficult to push clutch pedal down, HELP
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Check the clutch fluid level. If it's low, add some (takes brake fluid). There is a bleed valve down on the clutch slave cylinder on the bellhousing. Open the bleed valve and have someone push the clutch pedal slowly to floor, and hold. Close the bleed valve, and repeat until fluid comes out in a steady stream when the pedal is depressed. Your pedal should have pressure now, and the clutch should be working.
If no fluid is forced out the clutch master cylinder, into the line, and to the slave cylinder when clutch is pressed, then you may have a bad clutch master cylinder. If fluid does come out the bleed valve, but still no pressure on the pedal, it may be a bad slave cylinder.
Post back for more. Would like to know what you find out, and what the problem was, OB. Good luck.

The clutch should go to the floor =) But if it's not disengaging the clutch disk, there's definitely a problem between the pedal and the clutch disk. I'm guessing you have a hydraulic clutch?

1. Fill master cylinder reservoir with DOT 3 brake fluid. Raise and support vehicle. Attach bleeder hose to bleeder screw on bleed line of slave cylinder. See Fig. 1 (attached in link) . Place other end of hose in glass container 1/2 full of brake fluid. Loosen bleeder screw while holding bleeder screw fitting.

2. Have an assistant depress clutch pedal to the floor. Tighten bleeder screw and release clutch pedal. Repeat bleeding procedure until fluid entering container is free of bubbles. DO NOT allow reservoir to run out of fluid during bleeding. Refill clutch master cylinder reservoir.

CAUTION: DO NOT allow bleed line to bend or flex when loosening
bleeder screw.

FIG1: http://anubiscycle.com/fixya/91wranglerslaveassy.png

pump up clutch pedal really fast about ten times....leave it held to floor....open bleeder on slave cyl... repeat untill you have good pedal....may need to adjust master cyl. rod on clutch pedal to get more travel....good luck....Lee

Air in the system. The shave is between the engine and trans and even a small leak won't show up. Look in the rubber piece on trans with a light and see if you see any fluid. If you see any then the slave is starting to fail.

Your clutch system works the same as brakes do. The necessity to bleed tells you that there is a malfunction permitting air into the system. Check where the pedal rod goes into the firewall under the dash, the line itself, and the slave unit (some are inside the bellhousing...look for fluid dripping from bottom to verify if leaking) Not unlike brake master, they can also internally bypass. If you find no leaks, change master. Bleed system and you should be fine

It's possible the master cylinder could be it, if it were the slave cylinder you'd be losing clutch fluid.. Are you losing the fluid too?

yes it could be also check the fluid level!

slave cylinder needs replaced