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Clutch pedal stays on the floor

This is a discussion on Clutch pedal stays on the floor within the Manual Transmission forums, part of the Drivetrain category; I have a 98 Z-28 with a 6-speed. Recently, I find the clutch will stay on the floor and has ...

  1. #1
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    1998 Camaro Z28

    Clutch pedal stays on the floor

    I have a 98 Z-28 with a 6-speed. Recently, I find the clutch will stay on the floor and has to be pushed back up. I can't shift when its like this. Sometimes, the pedal comes up, but not right away. Fluid level is ok.

    I called Selman Chevy in Orange CA and the tech thought it was the pressure plate and recommended a new clutch, throw out bearing, etc. My daily driver mechanic thought it might be the master/slave cylinders.

    Any ideas on what's going wrong? Any recommendations on a good clutch guy near Anaheim?

    Thanx

  2. #2
    Junior Member AirMarcus's Avatar
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    01 Z28

    Mine never stuck to the floor, just faded when I left the pedal down and it was hard to pull out of first after about 15 seconds. Also it was impossible to hit third when getting on it. Not any more. Search my posts and see the tremendous help I have recieved and some may help. If I had this kind of help when I had Stangs in high school, I would have been able to drive them more than working on them. Thanks to all! Also my fluid had a lot of black sooty material in it. I was told this was from the master cylinder wearing internally.
    Last edited by AirMarcus; 01-25-2007 at 11:26 AM. Reason: add.

  3. #3
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    1998 Camaro Z28

    Thanx

    Thanks for the info on the clutch master cylinder. I checked out that install university site.

    I think I will try that first.

  4. #4
    Member 89LX's Avatar
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    2000 Z28 M6

    Clutch Master Cyl

    Clutch Master Cyl going out will cause exactly those problems (been there...done that). The early cylinders were inferior to the latter years and tended to go bad as early as 40K. The 2001 & 2002 were suppose to be more reliable but I read of them going sour early as well (just not as many). Good luck

  5. #5
    Formulatastic yellowv's Avatar
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    98 Formula /93 Z28

    It's the slave. I had the same problem on my 99 WS.6. Changed the clutch and slave and left the stock master and never had another problem. The clutch disk was actually fine. There is a reason the redesigned the slaves in 01.

  6. #6
    Crusader DarknessLS1's Avatar
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    2001 Trans Am

    i would say replace the master cylinder first before u even think about swapping the clutch or slave cylinder from personal experience.

  7. #7
    Member 89LX's Avatar
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    2000 Z28 M6

    Ditto

    Me to if given a choice.

  8. #8
    Senior Member JonB's Avatar
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    Ok so whats the verdict on this we seem to have 3 different recomendations, clutch, slave or master. I have the same problem in my 01. Only on wot runs and the pedal usually comes back about half way then stops and I have to pump it to get it back.

  9. #9
    Member 89LX's Avatar
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    2000 Z28 M6

    Clutch Master Cyl

    I can only tell you that I had the exact same problems and changed the Clutch Master Cylinder. According to the GM Service Manual for the 2000 Camaro Vol 2:
    ..Inspect the clutch hyrdaulic line for leaks and damage
    ..Inspect the reservior for fluid
    ..Inspect master cylinder for leakage
    ..Inspect the clutch release bearing on the actuator for binding
    ..Check to see if the master cylinder has fallen off the clutch pedal
    ..Inspect the clutch diaphragm for weak or broken spring
    It also says to inspect the master cylinder but does not tell you what to look for except leakage and no instructions for checking proper operation. I guess they figure if the other stuff checks good the master cylinder must be the problem (they do say to replace it). Can't promise it will fix it for you but having previously the same problem and what others have done I am reassured it will fix your problem also.
    2000 Z28 M6, SLP Lid, SLP Bellows, SLP UD,
    P&P Maf, TB By-Pass, PS Shorties, LS6 Intake, FAST 78mm TB, Hooker CB, Hurst Billet, Front Tower Brace, small 218/218....527/527....114 cam.
    337rwhp/348rwtq

  10. #10
    Senior Member JonB's Avatar
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    2005 GTO

    Anyone have any recomendations on what brand Clutch Master Cylinder?
    GM, ram adjustable, McLeod adjustable(a bit more than id like to spend on a street car).

  11. #11
    Member 89LX's Avatar
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    2000 Z28 M6

    Pn 12570277

    I got my GM Part #12570277 from WS6 (search in Google for site) for around $159. They have always shipped at once and no probelms. Came pre-bleed and serviced.

  12. #12
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    1998 Camaro Z28

    I tried and and it worked

    I ended up going for the master replacement. After seeing the posts, talking to some trany guys localy, it seemed to be the best next step.

    Sure 'nuff, my problems with the clutch are gone!

    Looking back on this, I realize the master had been weakening for a while.

    In early summer, shifting wasn't as crisp, and I was thinking of installing the Hurst shifter. Then, in August, I started getting gear clash shifting quickly from 1st to 4th.

    Now I realize, all the above were symptoms of the master cylinder failing, like in a brake system. I would still like a Hurst shifter, but things are ok now.

    At one point, before the pedal started staying down, I was ready to rebuild the trany!

    It certainly was better to do the $300 repair, instead of the $500 (slave cylinder) or $1000 plus for rebuilding the transmission.

    Thanks to all for your input!

  13. #13
    Junior Member AirMarcus's Avatar
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    01 Z28

    Did you check to make sure the bolt at the end was tightened well? Mine took a bit more for me to be comfortable.

  14. #14
    Senior Member JonB's Avatar
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    I just ordered my new master. Hopefully thats all it is I'll post up my results next weekend when I change it.
    05 PBM GTO
    Cold Air Inductions CAI,
    Relocated IAT with omega,
    Slp Predator tune,
    Flowmaster axle back with H pipe,
    Custom tuned TCM.
    BC Racing coil overs


    Sold 01 z28

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