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Old 05-09-2000, 09:45 AM   #1
RacerinLSL
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Member#: 1174
Join Date: Mar 2000
Chapter/Region: RMIC
Location: Denver, CO
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2011 Subaru WRX
Black

Exclamation Help Quick!!

Hey guys,
This morning the top half of my clutch pedal went dead. The clutch is still fully engaging and disengaging, but all on the bottom few inches of peddle. The peddle is literally halfway to the floor right now. I can pull it up with my toe, but as soon as I depress it, it does not come all the way back up again. Clutch fluid is fine. What gives???
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Old 05-09-2000, 09:52 AM   #2
newscooby
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Location: In an airplane, such is life..
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2000 MkIV GTi&23 LSV
Red cars PWN me

Post

Check to see if your slave cylinder is leaking. I have the EXACT same problem with my All-Trac Turbo and it seems the slave cylinder has developed a leak and can't build enough pressure to return the pedal completely. Nothing to worry about if the clutch still disengages fine. You just have to keep adding fluid.

Mike
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Old 05-09-2000, 09:53 AM   #3
rao
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2005 Legacy GT
98 BMW 540i LS2/T56

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It sounds like the clutch master cylinder has or is failing.
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Old 05-09-2000, 10:23 AM   #4
RacerinLSL
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Black

Exclamation

OK now the pedal is back, what is going on?
If it IS the master cyl. would the pedal suddenly be back?
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Old 05-09-2000, 10:27 AM   #5
rao
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98 BMW 540i LS2/T56

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Because it hasen't totally failed yet. If this keeps happening, then it is only a matter of time before the cylinder will stop working.
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Old 05-09-2000, 10:44 AM   #6
RacerinLSL
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Black

Exclamation

Thanks for your help.
Just called local dealer, can't get in til tommorrow and they cn't give me a time "drop it off in the morning and we'l look at it." Damn service departments!!
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Old 05-09-2000, 03:25 PM   #7
Travis R
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Location: Austin, TX
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'07 Mazda CX-7, '91
BMW 535i & '06 Ninja 650R

Lightbulb

That's the same thing that happened to my car a while back, and it's been happening again lately. The first time was about 8 months ago. The dealership did the usual "give it to us and we'll see if we can make it happen" kind of thing. I ended up getting a new flywheel, pressure plate, and clutch disk all under warranty. But I don't think that was the real problem. I thought that air in the clutch hydraulic system made sense, but what do I know? It seems to happen the most on cool, humid mornings. I have to pump the pedal about 8 to 10 times to get it back to normal, then it's fine the rest of the day.
Does anyone know the proper way to bleed the clutch? I don't feel like playing with the Subaru goofballs again.
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Old 05-09-2000, 03:27 PM   #8
rao
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It's not that hard to bleed the clutch, but you wil need help. The clutch line is only about 15" ling, but it forms a semi-circle. You bleed it just like you would bleed a brake line. Open the fitting and attach a tube to the fitting and run it to a container. Add fluid depress the clutch, close the fitting, repeat until no air comes out of the fitting.
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Old 05-10-2000, 01:06 AM   #9
RacerinLSL
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Black

Talking

Got to take my car in at 12:00 noon.

Just heard from the dealer,
air pockets in hydrolic fluid was causing the problem. No biggie. How did the damn air pockets get there in the first place. No work has ever been done on my car.?? Oh well, it's not the master cylinder at least.
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Old 05-10-2000, 08:57 AM   #10
Travis R
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BMW 535i & '06 Ninja 650R

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Thanks rao, I figured it would be pretty similar to bleeding the brakes. But when you push the clutch pedal down, it pushes against the clutch lever and releases the clutch, then when you open the bleed valve, the clutch lever pushes the slave cylinder back in. You now have your clutch engaged with your foot to the floor. I'm concerned that the clutch master cylinder will stay down and you will be SOL. I guess it comes down to the design of the clutch master cylinder. If there is an internal return spring it will probably come back on it's own and take another "gulp" of fluid from the reservoir to allow you to continue bleeding the system.
Anybody have an exploded diagram of the '99 RS clutch master cylinder?
Travis
(with off-and-on clutch pedal issues)
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Old 05-10-2000, 09:21 AM   #11
rao
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98 BMW 540i LS2/T56

Post

You can always use a vacuum system (you can get them from super cheap to real expensive) if you are concerned about that - though I don't think you will have that problem.
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