A4 (B7 Platform) Discussion Discussion forum for the B7 Audi A4 produced from 2005-2008.5

EGR problems

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Old Jan 3, 2020 | 09:43 AM
  #1  
Adam Cordell's Avatar
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Default EGR problems

Hi folks, I'm new around here, having be we owned an Audi until recently. I'm driving an A4 2.0TDI from 2006.

As ever, whenever I buy a second hand motor it works for a short time before it needs to be repaired. I'm relatively handy, so I'm doing the work myself cos it's not too challenging.

I had codes for P2100 / 2 / 8 for Throttle body, which I changed and it removed the codes and works well.

I also had a code P0404 which relates to EGR, which I took off, cleaned thoroughly and replaced. But the code came back. There is a squeal coming from the housing of the EGR valve, sounds electrical when the ignition is in the on position, is this normal? When I turn it to the off position, it sounds like it's crunching gears, 3 times in succession before shutting off.

Should I replace the EGR valve too? Is this most likely the issue?
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Old Jan 3, 2020 | 09:48 AM
  #2  
Adam Cordell's Avatar
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Hi folks, I'm new around here, having not owned an Audi until recently. I'm driving an A4 2.0TDI from 2006.

As ever, whenever I buy a second hand motor it works for a short time before it needs to be repaired. I'm relatively handy, so I'm doing the work myself cos it's not too challenging.

I had codes for P2100 / 2 / 8 for Throttle body, which I changed and it removed the codes and works well.

I also had a code P0404 which relates to EGR, which I took off, cleaned thoroughly and replaced. But the code came back. When I turn the ignition to the on position
(before starting the engine) there is a constant squeal (loud whine) coming from the housing of the EGR valve, it sounds electrical, is this normal? When I turn it to the off position, it sounds like it's crunching gears, 3 times in succession before shutting off. While driving I have loss of power, very little acceleration but it seems to sit okay at idle. It seems to be a little intermittent, too as not all these symptoms appear all the time.


Should I replace the EGR valve too? Is this most likely the issue?

Many thanks in advance,

Adam
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Old Feb 4, 2020 | 01:53 PM
  #3  
MrNobodyi's Avatar
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Hey,
I had same issue with EGR, so i just programmed it out instead of replacing. But i don't remember squeal and i have same car as yours.You sure the sounds are from EGR?
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