Audi a6 c7 3.0 tfsi kompresor problem

[Kokos]

audi a6 c7 3.0 tfsi squeaks something when the car warms up and then only at idle, when you add a little gas, it stops beeping so hard. I can clearly hear this squeak in the vicinity of the alternator on the right side of the car. the belt guide roller replaced where the alternator is driven, the guide roller where the compressor drive is replaced and the one-way clutch replaced, the alternator roller and still squeaks. Can anyone help or could it be the alternator? When it is turned off, it still squeaks, wheezes, so what can still turn like a car turned off, only probably in the middle of the alternator, the rotor, because on the alternator wheel, what is the belt, there is a one-way wheel, such a clutch in it, hm massacre. Could it be air, not air tightness?
Sorry for my English.
https://youtu.be/Jcbx_LAEbDg

[Valpo A7]

Remove the oil filler cap and see if it goes away. If it goes away then you probably have a bad PCV.

[f4m0u5]

agree with valpo, my wifes q5 just had a very similar if not identicle sound and when removing the oil cap it went away( oil cap was also very hard to pull off)

just replaced the pcv and the noise is gone

[Kokos]

cork test done, after unscrewing the sound disappears. what exactly will i need my ctua motor code. Thank you for your help

[Valpo A7]

This is probably the best video to watch to see what needs to be done.

https://www.youtube.com/watch?v=xOT5cIt_Btc

[f4m0u5]

This is probably the best video to watch to see what needs to be done.

https://www.youtube.com/watch?v=xOT5cIt_Btc

this video helped me alot!

u can also call fcperuo and give them vin so you get correct part!

[Valpo A7]

OP is from overseas so calling FCP may not be an option for him. Might be able to email and get the info needed

[f4m0u5]

OP is from overseas so calling FCP may not be an option for him. Might be able to email and get the info needed

good catch!