2003 A6 C5 1.9TDI mystery loose pipe

[daveyboy1967]

I was having a nose around under the bonnet earlier and found a loose pipe (photos attached). I have no idea what it is or where it goes, it's got a braded cover and is situated near the turbo pipework. Can anybody help identifying this please? The car is running completely normally by the way.

Thanks in advance,

Dave

[daveyboy1967]

I forgot to say, it obviously looks like it's been deliberately blanked off by someone other than Audi but what is it and what purpose would blanking it off serve? I'm a little concerned I may be causing damage to the engine in the long term running it like this thanks to someone's half assed repair/mod.

[daveyboy1967]

After a lot of research tonight I'm thinking someone in the past has deleted the EGR valve, anyone able to confirm this may be the case?

[cliffcoggin]

That sounds plausible. What is the other end of the hose connected to?

[daveyboy1967]

I didn't have time to strip things down and check yesterday as I'm working nights for a couple of shifts now. Now I know what I'm looking for though I should be able to tell if the EGR valve is missing a pipe without too much faffing about.

[daveyboy1967]

I think we can definitely say my EGR valve has been deleted, and it's so obvious now that it's funny. I've been intending for quite a while to try to find a missing fixing trim for my engine cover as shown below.

 

 

However it now turns out that what I was missing was an EGR valve!

 

 

Taxi for Dave please!