Grinding Rubbing Noise when foot offf accelerator

Wrath · May 2, 2012

I've noticed this over the past few months but when doing between 20-30, if I take my foot of the accelerator quickly there is a rubbing/grinding noise that lasts for about a second. There isn't any problem with performance and doesn't come on when accelerating. The more sudden you remove your foot, the worse it is.

Any ideas?

D8UGF · May 2, 2012

Stab in the dark here Wrath as a noise could be anything I supose, at one of my many visits to Audi the technician told me that the noise I was hearing is the turbo spooling in the opposite direction to its normal direction between gearchanges, it is part of the design apparently. That is for a 2.0tdi 170 tho, not sure what engine your cars got mate.

Dougie

Wrath · May 2, 2012

D8UGF said:
Stab in the dark here Wrath as a noise could be anything I supose, at one of my many visits to Audi the technician told me that the noise I was hearing is the turbo spooling in the opposite direction to its normal direction between gearchanges, it is part of the design apparently. That is for a 2.0tdi 170 tho, not sure what engine your cars got mate.

Cheers Dougie. I've had a look on the internet and there's a few posts about it being the wastegate and a couple of other posts to say Audi techs advise leaving it alone and it isn't a problem. It just sounds awful and wasn't sure if it was a sign of something going wrong. My engines a 140 but can't imagine too much difference with the 170.

Nathan

seroquel · Jun 16, 2012

Hi Wrath

I have a 2.0tdi 170 which does exactly the same. The noise sounds like brake pads grinding on the discs. When I took it back to Audi the mechanic told me that all a4 diesels make this noise. I think i'm being fobbed off, but can't find anyone who will offer a diagnosis.
Just wondering if you have had anyone tell you what the symtoms might point to?
Let me know if you do.
Thanks
S

Stevie170 · Jun 9, 2013

Old post but I'm hearin the same noise and wondering if its a problem or just supposed to be there? Did any if you get good answers as to what te noise is or wether its normal or not ? Just had June at a German specialist garage and they said they cudnt hear anything wrong and no codes but te noise I hear sounds rough! And sometimes flutters in low gears

seroquel said:
Hi Wrath

I have a 2.0tdi 170 which does exactly the same. The noise sounds like brake pads grinding on the discs. When I took it back to Audi the mechanic told me that all a4 diesels make this noise. I think i'm being fobbed off, but can't find anyone who will offer a diagnosis.
Just wondering if you have had anyone tell you what the symtoms might point to?
Let me know if you do.
Thanks
S

Wrath · Jun 9, 2013

Still running and the noise still there. No lights on dash and everything else seems fine.

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Grinding Rubbing Noise when foot offf accelerator

Wrath

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D8UGF

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Wrath

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seroquel

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Stevie170

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Wrath

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