Faulty k04 turbo activator -Q What's the repair path ?

[AGB-S3]

Diagnosed with faulty turbo activator , cause of occasional loss of power and issues at full boost
ie works fine most of the time .. then has the occasional dip, n75 replaced not long back , no error codes etc
original 180K miles k04

Q What's the repair path ?

can these be refurbished , exchanged etc ?


Tnx -Graham


merseyside

 

[Tj 0785]

They can be refurbished on a exchange basis if your turbo isn’t cracked with it most likely be at that mileage try aet turbos

 

[AGB-S3]

Im assuming it ok, where would cracks be a issue , rotor or case ?

 

[Tj 0785]

They won’t refurb a turbo with a cracked housing so you would lose the exchange deposit if it was, mine was cracked when taken out but still worked fine as they were only tiny cracks

 

[Tj 0785]

It won’t let me upload my pictures of my cracked one but have a google of cracked ko4 housing they are not massive cracks

 

[AGB-S3]

catch22 , buying a refurbed unit indirectly, that's on receipt of yours ,

round what ££ is/was the deposit ?

 

[Tj 0785]

I’d didn’t replace mine I sold it with the engine so don’t know about prices all I can say is go with a reputable company my mate got a cheap turbo refund for his diesel a4 lasted 200 miles

 

[AGB-S3]

Tnx for the info , can see posted images , cracks round the control valve , makes sense , had this , occasional power loss for a while, after replacing the n75 nothing ever showed on the error codes , and 99.9 % of the time , ran/runs fine .. then a dip in the power after opening throttle ..finally, showed up on rolling road test , dip and some 'occasional' flutter at max rpm..