A6 Allroad 2010 3.0 tdi egr problem

[Terry Wright]

Hi all.  I'm hoping there's someone out there who's a bit of a guru with EGR systems.

I've had my A6 allroad 2010 for about 15 months.  The day after buying it (privately), the yellow engine light came on.  I happened to be near a dealership at the time and took it in.  The scanner showed it was exhaust gas recirculation - low flow.  They said it needed a new EGR valve and it would cost about 2.5k.  Erk!  Was miles from home and they said it was okay to drive so I took it home (no dealership here).  Had the local diesel expert check it out - they took out and cleaned the valve, cleaned all the associated piping and put it back together.  This seemed to fix it but about 4 months later the warning light started coming on again (intermittently).  They pulled it apart again and everything still seemed clean.  Car went to an auto electrician for some sort of reset, but it made no difference.  I bit the bullet and bought a new egr valve (uk eBay - 120 pounds) and had that installed, and it was okay for a couple of weeks then the light started coming on again.  Very reluctant to just leave it with a dealership, and it would be a logistical nightmare to get it to them anyway.  Has anyone got any ideas?  Any advice would be greatly appreciated.  Thanks.

[Envy]

There are other threads on the Tinterweb reporting that the fault can be born from build-ups on the intake side too. Also swirl flap actuator. 

Link below to one thread of interest

http://www.a5oc.com/forums/audi-a5-s5-tech/20616-egr-insufficient-flow.html

 

[Steve Q]

Welcome to the forum Terry, you'll find the members on here are a friendly and helpful bunch 🙂

Tom is right in saying it could be the swirl lap actuator. 

Cheers

Steve

[Terry Wright]

Thanks for the help.  I'll investigate that swirl flap actuator and check if the mechanic cleaned out the intake manifold side too.

[Steve Q]

6 hours ago, Terry Wright said:

Thanks for the help.  I'll investigate that swirl flap actuator and check if the mechanic cleaned out the intake manifold side too.

Not a problem Terry, please keep us posted on how you get on 🙂

cheers

Steve

[Guest BMW_Mania]

On 5/22/2018 at 8:39 AM, Terry Wright said:

Thanks for the help.  I'll investigate that swirl flap actuator and check if the mechanic cleaned out the intake manifold side too.

Update please 🙂

[Terry Wright]

Sorry I hadn't posted earlier.  I got so fed up with the egr problem, I eventually had it deleted on the cpu.  The chap who did it didn't think it was necessary to physically remove the egr valve so that is still on there.  For no extra, he remapped the engine.  Supposedly have about 240kw and 600 nm now.  It does feel pretty rapid.  This was done about 3 months ago. Actually sold the car to a mate a few weeks ago and have since been having drastic seller regret.  On the plus side, I bought my old mgf back from him at the same time, so I get my jollies somewhat differently now.