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Help, Clutch Pedal Sticking to floor at High RPM's

This is a discussion on Help, Clutch Pedal Sticking to floor at High RPM's within the General Help forums, part of the LSx Technical Help Section category; My clutch pedal sticks to the floor at high RPM's. But when I drive normal it doesn't have any problems. ...

  1. #1
    WS6 Lover transam207's Avatar
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    Exclamation Help, Clutch Pedal Sticking to floor at High RPM's

    My clutch pedal sticks to the floor at high RPM's. But when I drive normal it doesn't have any problems. Can someone help me out and let me know what it sounds like the problem is. When I race or full throttle my car the pedal sticks to the floor and is almost impossible to shift into the other gears, but once it sticks to the floor I can pull it up with my foot and pump it up a little and then it will work just fine again. I re-bleed the hydraulic system, and drilled out my hydraulic line, but dont know what else to do. Not this last winter but the winter before, I replaced the master, and slave cylinders, and replaced the clutch. But can someone please help me out. Thanks!

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    TJEA Retirement Home Dr.Crash's Avatar
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    should be all you need to know


    Sticking clutch pedal write-up

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    WS6 Lover transam207's Avatar
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    Quote Originally Posted by Dr.Crash View Post
    should be all you need to know


    Sticking clutch pedal write-up
    If I already replaced the parts about a year and a half ago, can the parts be bad again? They can go that dang fast. I did everything on that thread except replaced the master and the slave, but like I said I replaced them a little over a year ago. But maybe they need replacement again! Any other suggestions???

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    WS6 Lover transam207's Avatar
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    Thanks but i did do everything up to replacing the master/slave cylinders. Do you think I will have to replace them again If I already replaced them a little over a year ago? Any other suggestions on what I could try???

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    TJEA Retirement Home Dr.Crash's Avatar
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    i would try bleeding it again. if you just replaced everything, then it must just need to be bled. maybe there is something blocking the line. did you get all of the shavings out when you did the drill mod?

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    I tried to do the drill mod once it was all removed, but once I got it out and started drilling there was no restriction what so ever, so I am thinking that the previous owner already did the drill mod on the line. But I will try re-bleeding it again.

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    Thanks but I believe I fixed the problem. It was the master cylinder. But I just now have to re-bleed the system for the 4th time in 3 days.

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    TJEA Retirement Home Dr.Crash's Avatar
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    what was wrong with it?

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    Quote Originally Posted by Dr.Crash View Post
    what was wrong with it?
    I have no idea. It must of been just a bad part. My Hydraulic/Brake Fluid was black as hell, and I think it ruined my Master cylinder. I did all the steps up to the Master Cylinder and nothing fixed it. Now I can go high RPM's and shift into the other gears, but I still have a little problem with the 3rd gear, but there might still be a little bit of air in the line still.

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    Mine was the slave cylinder. And it is common. My problem was exactly like yours at the start and got worse. What makes this difficult is all of these other things can help. Flushing and new fluid improves fluid density and helps compensate for a slave or master cylinder that is bleeding through. Then if both are failing changing one helps.
    Last edited by BowTied; 03-29-2009 at 06:30 AM.

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    Quote Originally Posted by BowTied View Post
    Mine was the slave cylinder. And it is common. My problem was exactly like yours at the start and got worse. What makes this difficult is all of these other things can help. Flushing and new fluid improves fluid density and helps compensate for a slave or master cylinder that is bleeding through. Then if both are failing changing one helps.
    Huh, mine could be the slave unit (thats why it still sticks a little in 3rd), but it is one hell of a time to get to the bleeder valve on these cars. Did you drill through your floorboard to get to the bleeder valve?

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    No. But I was changing my clutch, flywheel, and drive shaft. So we had the car up pretty good.

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    Quote Originally Posted by BowTied View Post
    No. But I was changing my clutch, flywheel, and drive shaft. So we had the car up pretty good.
    Oh...ok maybe I'll end up having to do that too. If this 3rd gear problem is the slave cylinder then I'll be doing the same thing you did. Cant Wait!!

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    Quote Originally Posted by transam207 View Post
    Oh...ok maybe I'll end up having to do that too. If this 3rd gear problem is the slave cylinder then I'll be doing the same thing you did. Cant Wait!!
    they make a speed bleeder so you can blled your slave from the engine bay. its not to expensive and i recomend it to anyone i can. ask mark from KYSpeed, he has the hook up on these!!!! Good luck

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    If they are rather inexpensive it would be a good plan. Even up good it takes w a while to bleed, probably 15 minute or so. And depending on your set up it takes a while to get the car up...I had it up like 2 feet.

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    Thanks guys for all the help. I appreciate it all.

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