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jose

Clutch Sound an coolant smell

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My 99' 996 C2 has a particular sound when I press the clutch, is increased when I accelerate the engine idling or running, "sounds like a old power steering pump". The clutch pressure is good. The sound look like is coming from the front side of the vehicle. What is it?

And to complete it has a coolant smell in air conditioning. I check the coolant reseirvor and in fact has decreased. I checked for any leaks near engine and front bumper and nothing! It is possible the heater core? Where to check?

I'll appreciate any help

B)

Jose

Edited by jose

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You will need to check for leaks with a pressure tester. Sometimes leaks are the cap or coolant tank and may be very small and hard to find.

The clutch noise can't really come from the front as the clutch is hydraulic - so all clutch action is transmitted in fluid. If the noise is at your feet then it is likely the clutch pedal return spring.

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Thanks Loren,

I can tell that is not in the pedal. The sound is more prominent when I open the windows. The only way to hear it is when pedal is pressed. I can't be outside and inside the car at the same time. So I can't define if it is comming from the front or rear. Let say that is comming from rear! It sound like worn pulley or powerstering without oil,you know! because when the car is accelerated with the clutch pedal down that sound increase. The sound dissapear after the pedal is released. :huh:

You will need to check for leaks with a pressure tester. Sometimes leaks are the cap or coolant tank and may be very small and hard to find.

The clutch noise can't really come from the front as the clutch is hydraulic - so all clutch action is transmitted in fluid. If the noise is at your feet then it is likely the clutch pedal return spring.

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Sounds like a faulty release bearing to me, concerning the coolant smell, as Loren says, use a pressure tester to find the leak.

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Thanks RFM,

Where exactly I can locate those faulty release bearing?

thanks,

Jose

Sounds like a faulty release bearing to me, concerning the coolant smell, as Loren says, use a pressure tester to find the leak.

Edited by jose

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Thanks RFM,

Where exactly I can locate those faulty release bearing?

thanks,

Jose

The release bearing (also known as a throwout bearing) is located inside the bell housing of the transmission, where it presses on the release fingers of the clutch pressure plate when pressed by the clutch release lever.

Regards, Maurice.

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It is possible to load a sound clip here? I would like to upload this problem, so experts can judge.dry.gif

I don't know much about transmission and clutch. I'm 100% amateur. B)

Edited by jose

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It is possible to load a sound clip here? I would like to upload this problem, so experts can judge.dry.gif

I don't know much about transmission and clutch. I'm 100% amateur. B)

Yes, just upload it like an image.

You can upload sound files in: MP3, WAV, WMV, MOV, MPG, or RAM formats.

  • Upvote 1

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Tune up your speakers here we go.

I load a 36sec audio I think this explains all.

I must add that this sound I have been noted increasing thru the years.dry.gif

It is possible to load a sound clip here? I would like to upload this problem, so experts can judge.dry.gif

I don't know much about transmission and clutch. I'm 100% amateur. B)

Yes, just upload it like an image.

You can upload sound files in: MP3, WAV, WMV, MOV, MPG, or RAM formats.

Memo.mp3

Edited by jose

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Anyone?

Tune up your speakers here we go.

I load a 36sec audio I think this explains all.

I must add that this sound I have been noted increasing thru the years.dry.gif

It is possible to load a sound clip here? I would like to upload this problem, so experts can judge.dry.gif

I don't know much about transmission and clutch. I'm 100% amateur. B)

Yes, just upload it like an image.

You can upload sound files in: MP3, WAV, WMV, MOV, MPG, or RAM formats.

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Again, check the clutch release bearing and pressure plate.

  • Upvote 1

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I will has to take it to my mechanic,

how much you estimate this job done?

Thanks for reply

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Antifreeze smell.......on my 02 C4 the antifreeze overflow deposits expelled antifreeze directly on exhaust pipe just before the left tailpipe tip. Could be smelling the antifreeze residue burning off the pipe. This continues long after the liquid is dissolved. I wire-brushed the residue off and it seemed to help.

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Thanks for reply,

I got your point but it also happens when the car is running anywhere, also on certain range of temperature. I opened another post called heater core removal. According to what we discussed there is very possible to be the heater core. I haven't physically removed the heater core but seems the most logical step to take. As occurs on certain temps.like from 69-74 on the panel it's that when mixing cold air from outside And heat from the heater core, if the heater core is leaking then when the heater core that use antifreeze this smell will be detected immdiately. And the heater core is only device that contain coolant in the A/C system.

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Anyone?

Release bearing is bad. You should replace the clutch while you're there.

Howard

  • Upvote 1

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Thanks for the reply guys. B) That will be a task for next summer. For now sleep, sleep, sleep this winter.

I'll post here my results later.

Thanks for reply,

I got your point but it also happens when the car is running anywhere, also on certain range of temperature. I opened another post called heater core removal. According to what we discussed there is very possible to be the heater core. I haven't physically removed the heater core but seems the most logical step to take. As occurs on certain temps.like from 69-74 on the panel it's that when mixing cold air from outside And heat from the heater core, if the heater core is leaking then when the heater core that use antifreeze this smell will be detected immdiately. And the heater core is only device that contain coolant in the A/C system.

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Well, The summer is ON and I bought the clutch, I got a SACHS clutch kit on ebay for $439, My mechanic estimate the labor for around 600.

Is this estimate right or should be less?

What's your opinion?

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I would say about 4 hours labor.

Thanks Loren,

I took the car to the mechanic today and the release bearing was bad :thankyou: , as you said guys, but an additional inspection reveal that the clutch pedal helper spring was also bad. I won't go for an additional 240's to replace it and wait 6 days for part delivery. I want to take it calm and DIY. B) Need your help.

Thanks in advance

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Just to update, this case is closed, I replace the clutch kit and the heatercore and all dissapear.

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