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Does my C4S have the flu??

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15 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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YOUR RESEARCHDoes my C4S have the flu??

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Check prior

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sounds like a throw out bearing to me, get it checked prior to the warranty ending

Does my C4S have the flu??
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Leading evidence: 'Check prior' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check prior' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Check under warranty in any case

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Suggestion

Should get the sound checked under warranty in any case.

Does my C4S have the flu??
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Check prior

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Performed · outcome unconfirmed

sounds like a throw out bearing to me, get it checked prior to the warranty ending

Does my C4S have the flu??

Check under warranty in any case

No successful repair reported for this finding.

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Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion

Should get the sound checked under warranty in any case.

Does my C4S have the flu??
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15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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POST 1 / ORIGINAL POSTEROriginal post

Sorry people but I had to grab your attention somehow.I am a noephite.I purchased a 2004 C4S cabriolet and I love this car. It has 8 mos.left on the warranty and I want to know if there is a 'problem' or , if what I hear is 'normal'.When the car has been driven for ,say 15 minutes, if I am in first on at a red light ( and on a hill).when I let the clutch out-therfe is a distinct rattling sound. Similarly,if I park my car,turn off the engine,then start it ( in neutral)-the same sound. Can anyone tell me if this is par for the course??I would really appreciate any feedback. Robert (in Montreal)

POST 2Original post

sounds like a throw out bearing to me, get it checked prior to the warranty ending

POST 3Original post

Is it a sound that sounds almost like you are about to stall? J

POST 4 / ORIGINAL POSTEROriginal post

It doesn't dound like I am about to stall-its just a distinct rattle.

POST 5Original post

Does it ever happen when the car is fully warmed up? Could also be a loose muffler baffle.

POST 6 / ORIGINAL POSTEROriginal post

Sorry about the 'dound'-too much wine tonight-I meant 'sounds'. By the way,what is a 'throw out bearing'

POST 7 / ORIGINAL POSTEROriginal post

Yes-in fact it happens mainly when it is fully warmed up.

POST 8Original post

The throw-out bearing is part of the clutch assembly, it functions when the clutch is disengaged. Otherwise it freewheels. Should get the sound checked under warranty in any case.

POST 9Original post

Sorry, can't help you here since I've never driven my C4S for >15 minutes Only kidding, I think. But, the rattle should be thoroughly checked out - certainly doesn't sound normal. Enjoy your car!!

POST 10Original post

Robert, Can you "repeat" the sound on demand? If so, it would be great to post a sound bite. For the record, my MY00 C2 often "clunks" when going into first gear - but it is not a rattle. -td

POST 11Original post

its likley the dual mass flywheel, and its normal

POST 12Original post

My 02 C4S does not rattle - this doesn't sound normal. Could it be an exhaust rattle?

POST 13 / ORIGINAL POSTEROriginal post

It only rattles a) when warmed up ( driving for 15 min.or more and only from a standing stop when I go into first and just at the end of disengaging the clutch or b) same as above -even more if I am on a hill ( going up of course abd from a standing stop. c) after being warmed up-if I turn off the engine,then start it again-from neutral-I still hear the sound. Otherwise I don't hear it. Are there any doctors in the house with a degree who can give me a professional diagnosis?

POST 14Original post

I tend to agree this is the most likely, some probably rattle more than others or not at all. There are a couple of long springs in the flywheel that are being compressed under the conditions you describe. Try to locate the sound, if it is central or more right or left to rule out other possibilities.

POST 15Original post

I've had two rattles in my C4S. Both come on when warm, and either one can be the source of your rattle. One is the cat. It is a rattle that is continuous at idle once the engine is warm, becomes less obvious as you rev up the engine. The other was the clutch throwout bearing. Negligible rattle when engine first starts up cold, more obvious when warm. Easy to check. Step on the clutch. That engages the bearing and should make the rattle disappear, only to reappear when you release the clutch. Your rattle could be one or the other, both, or neither. Regardless, have the dealership check it out. The C4S does not rattle "normally".

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