Drivetrain Questions and info regarding transmissions, clutches, etc.

Another Clutch Problem

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Old Sep 3, 2009 | 06:09 PM
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Another Clutch Problem

Hello Everyone,

When I press on my clutch it goes soft until it gets halfway then it becomes harder to push and makes a whistling sound. So I took it to the dealer yesterday to see where the problem is. They just called me and said that the problem is mechanical and they would have to pull out the transmission to see what's causing it. They quoted me $380 for just pulling out the transmission . Isn't that too much? Is there a cheaper way to have my clutch checked?

Also, Does anyone know what can be causing the problem?

Thanks in advance
 
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Old Sep 4, 2009 | 12:49 PM
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It seems the you indicate that the pedal had been fine until it dropped as described above. Assuming that the dealer checked the hydraulics system for the presence of air and overall function and they were fine, it is likely that this is an issue with your stock pressure-plates SAC-mechanism. The stock plate uses a ratcheting system that is intended to maintain a consistent engagement point throughout the life of the clutch.
It's possible that the SAC-mechanism miss-adjusted or that it hung-up leading to improper function.

Did you notice any other issues with the clutch over the last few days? Had the clutch engagement point gotten high, relative to pedal travel? Let me know and I will be happy to assist you further. Thanks,
 
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Old Sep 4, 2009 | 01:00 PM
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Thanks a lot for your response. yes they told me that the hydraulics system is fine. I'm not sure if the engagement point changed but what I noticed is that the pedal has a different feel sometimes. Also, I have had the sticky clutch problem described in this thread
https://g35driver.com/forums/drivetr...h-problem.html
and it git resolved when the dealer changed the master cylinder under warranty.
Can the bad master cylinder be the cause of this new problem?

Thanks again
 
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Old Sep 4, 2009 | 01:13 PM
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Do you have access to the car as we speak? If so, I suggest getting in and pumping the pedal 10 to 15 times to see if pressure builds back up allowing the pedal to have normal resistence. If it does then this is more than likely a hydraulic issue. If on the other hand, nothing changes, then it's more than likely the SAC-plate. Have you noticed any fluid leaks under the car at all? Have you checked the fluid reservoir? Is the fluid low? Is it dark or discolored? Let me know if you need anything else. Thanks,
 
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Old Sep 4, 2009 | 01:43 PM
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No I don't have access to the car right now because it's at the dealership. But no I haven't noticed any leaks at all. According to the dealer, it might be a clutch plate or a throw-out bearings problem. Can any of these cause such a problem?
 
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Old Sep 4, 2009 | 02:06 PM
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The plate is what I referenced above. Yes, this could easily be the issue. I doubt that it would be a bearing but anything is possible. If you want to send me some pics of the parts when they are removed you are welcome too. I would then be better able to assess the issue. And, if you need another clutch as a result of this issue just let me know and I will be happy to work with you...we manufacture 7 different single-disc clutch options for this application.
 
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Old Sep 10, 2009 | 04:44 PM
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Update

So I had the dealer pull out my transmission to check my clutch assembly. What they found out was that the transmission collar was the cause of the problem. I think it had holes in it or something like that. Which burnt up my clutch. So they are going to replace that part of the transmission along with the whole clutch assembly under the powertrain warranty
 
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Old Sep 10, 2009 | 05:08 PM
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Hani, I am a bit perplexed. You reference a transmission collar and the only thing that comes to mind would be the carrier that the bearing is pressed onto. Is this what they replaced? Though I am not trying to rain on your parade I can't imagine how this could in any way cause a noise or lead to inconsistent pedal relative to engagement. I could be wrong but I am very interested in what they find. See if you can find out a bit more about this. Pics would be great too!
 
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Old Sep 17, 2009 | 03:22 AM
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Well, from what I understood is that the problem with the carrier is what caused the damage to both the throw-out bearings and the flywheel. So the carrier didn't make noise or lead to the problem with the pedal but the bad bearings and flywheel did. Anyways, I picked up my car yesterday and the clutch is working perfectly now
 
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