TDI Engine: Troubleshooting "Quack" Noise

Hello,

I'm new here and I already have a question.
My new TDI (currently 5,700 km, see signature below) has been making a squeaking noise from the beginning when releasing the clutch. It also makes the noise when quickly releasing the accelerator pedal with a gear engaged. Therefore, it's not related to the clutch.
In the workshop, they are at a loss. As a test, I suggested disconnecting the EGR valve (which I did), but that didn't solve the problem either.

I don't think it's coming from the turbo either, because a new one was installed at a mileage of 2,600 km (due to a complete turbo failure seemingly out of nowhere).

Ist das Geräusch normal?? Who has an idea?

Greetings.

Rudi.

Am I the only one with this "problem"?
I can't imagine that.
Has anyone heard of any of this before?

Hi.

. . . similar entries in the error database.

Take a look around a bit.

I don't know if this applies to the 130 hp version, but it might be helpful.

Hello,

I've already seen that. However, the noises I'm experiencing occur while driving, not when the car is stationary, as described there.

Despite that, we took the AGR suggestion into account, but it didn't work.

Regards,

Rudi.