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Throw out bearing rattle on takeoff?

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Old 12-20-2009, 07:54 PM
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beary58
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Default Throw out bearing rattle on takeoff?

I just bought an 03 with 28000 miles. I've noticed that the throw out bearing rattles a little when I take off. I read this is normal for the C5, but why does it do it?

I've owned a dozen cars with clutches, but this is a first. Normally I would pull the tranny and put a new one in, but that doesn't look like fun in a C5.

Just tell me its OK and I will trust you guys.

Beary
Old 12-20-2009, 08:02 PM
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lucky131969
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Originally Posted by beary58
I just bought an 03 with 28000 miles. I've noticed that the throw out bearing rattles a little when I take off. I read this is normal for the C5, but why does it do it?

I've owned a dozen cars with clutches, but this is a first. Normally I would pull the tranny and put a new one in, but that doesn't look like fun in a C5.

Just tell me its OK and I will trust you guys.

Beary
How do you know it's the throwout bearing causing the noise?
Old 12-20-2009, 08:16 PM
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beary58
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Good question. Originally I thought is was the engine lugging because the sound is coming from that part of the car. But when I told someone else about it (C5 owner), he said it was a known problem with the bearing. His is an automatic, but knows a lot of C5 owners.

Beary
Old 12-20-2009, 08:20 PM
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rbrtclk
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THROWOUT BEARING!!!!! Normal, dont worry unless it gets VERY LOUD.
Old 12-21-2009, 10:00 AM
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Oldvetter
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Are you sure this is not the "marbles in a can" sound that some C5s make? They mention it in the video that came with the C5. It is due to tolerances in the drivetrain (splines rattling).
Old 12-21-2009, 10:35 AM
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Originally Posted by Oldvetter
Are you sure this is not the "marbles in a can" sound that some C5s make? They mention it in the video that came with the C5. It is due to tolerances in the drivetrain (splines rattling).
It's in the torque tube and is most noticeable feathering it out of first gear as you let out the clutch. More noticeable if you let it lug. Both of my C5 6 speeds have done this.
Old 12-21-2009, 10:44 AM
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dougbfresh
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Normal, mine does it too.
Old 12-21-2009, 04:50 PM
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beary58
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Hey thanks guys, that is the only real concern I had on the way it drives. Otherwise this is one sweet driving car.

Beary
Old 12-21-2009, 05:53 PM
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Redneck Slim
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That could be the normal T-56 rattle.

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