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Weird clutch issue, please help.

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Old Apr 8, 2007 | 12:52 AM
  #1  
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From: McHenry IL
Default Weird clutch issue, please help.

So tonight I was out messing around in the vette, and I decided to put it on competitive driving mode and see what happens. What I did was I was rolling in second gear at around 30 mph and I pushed in the clutch and hammered it. I popped the clutch and the car got loose as expected and a little sideways. I noticed that the active handling kicked on as I let off, but right when I pushed the clutch it I noticed it went almost to the floor and was engaging off the floor too. I slowed down and tried a slow takeoff and the clutch was still almost stuck to the floor and the pedal wouldnt go back up. It was like a different clutch. When I got home a few minutes later I got under the dash to look at the pedal and it was visably lower than the brake. So I grabbed it and pulled it towards me and it seemed to pop back up into place. I drove it right after that and the clutch still seemed to engage near the floor and it seemed like I was riding it too much but it wouldnt disengage like normal. After a few more minutes of driving it seemed to be back to normal. Does the clutch have any functionality with the active handling?? I noticed my clutch fluid was closer to the lower mark then the higher one. Did I break something or was that the car trying to stop itself from spinning out? Please help.
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Old Apr 8, 2007 | 01:05 AM
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aaaaa
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Common,common problem. I got rid of my c5 mn6 because of this. Soon you will be assailed with advice to change the fluid.
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Old Apr 8, 2007 | 01:26 AM
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My c6 is a month old and only has 1300 miles.
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Old Apr 8, 2007 | 06:53 AM
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Originally Posted by C6Brian
...What I did was I was rolling in second gear at around 30 mph and I pushed in the clutch and hammered it I popped the clutch....but right when I pushed the clutch it I noticed it went almost to the floor and was engaging off the floor too....
The simple answer is that you overheated the clutch. Once it fully cooled down it regained pre-event normalcy.

You should take that incident as a warning that your clutch doesn't appreciate that particular treatment. And if done again, the clutch will behave the same way.

That might be called a "rolling burnout." Problem is, if the tires don't spin, the clutch must absorb the rev mismatch. So it spins the friction surfaces and they instantly overheat.

There no clutch behavior difference among the TC/AH settings on the console.

As a separate issue, anyone with a C5 or C6 M6/M12 whose car sees aggressive driving and a fair amount of wide-open-throttle ought to be maintaining the the clutch fluid. It breaks down when subjected to repeated high temps and causes pedal woes. Pedal woes during aggressive shifting will lead to tranny issues.

Ranger
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Old Apr 8, 2007 | 08:21 AM
  #5  
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
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Originally Posted by C6Brian
...I noticed my clutch fluid was closer to the lower mark then the higher one.
how much closer is the question. yes, you may need to add some fluid, top it off.

this next part confuses me.....
Originally Posted by C6Brian
...
but right when I pushed the clutch it I noticed it went almost to the floor and was engaging off the floor too..
my clutch always goes to the floor when i use it, unless i'm shifting really quick, and then i'll only press it about halfway to make my shift.

Originally Posted by C6Brian
...
I got under the dash to look at the pedal and it was visably lower than the brake. So I grabbed it and pulled it towards me and it seemed to pop back up into place.
did you notice anything mechanical that may have snagged the pedal, i.e. assist spring, floor mat, etc.

did you smell that smell ?? you know, that clutch burning smell, kinda like burnt rubber but lingers longer and is twice as strong.
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Old Apr 8, 2007 | 09:44 AM
  #6  
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From: McHenry IL
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Ranger,

Thanks for the info. I am new to the fluid clutch world. All the previous mustangs I had were cable clutch and the pedal action never changed no matter how hard I pushed it. That rolling burnout was after a long night of messing around so I probably overheated. Last night after this happened I did do some searching and I came across your posts on how to change the fluid and what to look for. I will be starting that today. My clutch fluid looked like a nice amber beer should look, and I only have 1500 miles.

Zig,

What I meant was the clutch went to the floor but never came back. It seemed like I lost all preasure in the system and it took a few minutes to come back. And, right after it happened it seemed all my pedal slack was gone and it would grab like a half inch from the floor. It was so different than stock it took me by supprise.
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