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I guess this site is more technically oriented so help me figure out what this noise is. I can only hear it after engine is warm. Intermittent at idle. Fan not running. I can only hear it inside the car. I tried to listen with engine compartment open but cannot hear it from there. I have a sound clip video but you have to crank volume up or have good speakers to hear it. It is like a grinding/squealing. Passed by dealer to listen to it briefly. Didn't think it's from belts. Where do you think it's coming from?

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In your profile is marked Carrera 2005 as car which of course is no a DFI. Anyway, i would take a look, depending on the specific gearbox or clutch, or the sound does not come from that area. There is more info needed on car-gearbox-options, etc.

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Make certain your stereo is turned OFF and see if the sound goes away.

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Did you ever discover what this was? I have the same noise as the one posted....

I have changed the belt and thought it solved the issue but seems to come back intermittently now. I checked all guides and followings with the belt off and I noticed a very, very slight play in the water pump....

I have a feeling that it is the water pump on its way out - any other suggestions from prior experience/problems anyone?

p.s. it is also a 3.6 DFI 2010.

Edited by gerryfrost

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I had a similar noise on my 2009 C4s and it was the water pump too. Alas water pumps don't last long even on the 9A1 engine.

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