[sharc_biker]

Our 2013 Audi Q5 2.0 TDI suddenly started letting out a loud whining sound while driving in the city and we were able to drive it back home keeping the revs under 1.5K rpm. This whining sound was not audible when idling and hence my first suspect was the turbo. The vehicle has clocked around 1,02,000 kms on the Odo. Since there isn't an Audi ASC in my city, I took the vehicle to an FNG who coordinated with an Audi ASC mechanic on phone for an initial diagnosis of the issue.

This is a video of the whining sound. When the EGR valve connector is disconnected, the revs are restricted to 1.5k rpm and the sound dies down a bit.

https://www.youtube.com/watch?v=EdHm...ature=youtu.be

This is a video of the turbo in action:

https://www.youtube.com/watch?v=hbL0KYV0S-w

Here is an image of the turbo which doesn't show any visible damage to the turbo core/fan and it even rotates freely when rotated manually.



The Audi ASC who was on call with the FNG and the saw the videos said it is a blown turbo. The FNG who is experienced with Skoda cars says it could be a blown turbo or a faulty EGR valve as he had a similar case with an Octavia which turned out to be a faulty EGR valve. But he needs to take the turbo, EGR and Manifold out to confirm. There is no fault indication in the vehicle's MID. None at all. The ASC mechanic is of the opinion that the internal floating ring bush around the shaft is worn out and is fouling with the turbo body. This at higher rpm is causing the whining sound.

Is it a blown turbo?
Could it be a faulty EGR valve?

If it is a turbo, is there an aftermarket option? I found the model on Garrett Turbo's website an I have requested for a quote.
(ASC mechanic estimated 1.5L + for the turbo replacement)
Can only the turbo core be replaced?
Will the Turbo rebuild kits available on ebay (https://www.ebay.com/itm/Turbo-rebui...-/223168920170 )do the job?

[vishy76]

This seems to be a blown turbo. The noise you are getting is also commonly known as the police siren in Volkswagen owner groups which a busted turbo is infamous for making.

Your best bet would be to get a new turbo core rather than changing the whole assembly. Audi will push for complete turbocharger assembly replacement but you can source the core for a fraction of the amount and get the job done at an FNG.



Also keep an eye out for a drop in oil levels. If the turbo has damaged seals on the intake or exhaust side, it might be leaking oil which is eventually burnt in the exhaust or the combustion chamber giving out black smoke.

[sharc_biker]

Originally Posted by vishy76

This seems to be a blown turbo. The noise you are getting is also commonly known as the police siren in Volkswagen owner groups which a busted turbo is infamous for making.

Your best bet would be to get a new turbo core rather than changing the whole assembly. Audi will push for complete turbocharger assembly replacement but you can source the core for a fraction of the amount and get the job done at an FNG.

Attachment 1978892

Also keep an eye out for a drop in oil levels. If the turbo has damaged seals on the intake or exhaust side, it might be leaking oil which is eventually burnt in the exhaust or the combustion chamber giving out black smoke.

Thank you for the quick reply. Any idea where the turbo core can be sourced from? A couple of FNGs I spoke to say it is hard to come by. The turbo model number on the Q5 seems to be the same as that of the A4 2.0 TDI.

The vehicle hasn't been driven after this issue (except to the FNG) and so far the oil levels seemed fine. Will keep an eye on that.

The model number is:

Part number: 818987-1
OE Part number: 03L145721BV100
Model: GTC1549VZ

[dhanushs]

Looks like you have a blown turbo. The bush is shot, changing the core assembly alignment making it touch the casing. Hence the sound.

Lot of reliable turbo repair guys in Bangalore. I remember a dedicated shop for turbo's in JC Road Bangalore, where you get a brand new turbo at a fraction of the cost from the company.

[sagarpadaki]

Originally Posted by sharc_biker

Thank you for the quick reply. Any idea where the turbo core can be sourced from? A couple of FNGs I spoke to say it is hard to come by. The turbo model number on the Q5 seems to be the same as that of the A4 2.0 TDI.

The vehicle hasn't been driven after this issue (except to the FNG) and so far the oil levels seemed fine. Will keep an eye on that.

The model number is:

Part number: 818987-1
OE Part number: 03L145721BV100
Model: GTC1549VZ

Few options that i can think of:

1. Get turbo core imported from a seller. Members who source parts from abroad can guide you to the relevant online stores. You will need a knowledgeable person to perform this replacement. Blackworks , Bangalore are one who comes to the top of my mind
2. Get the whole turbo replaced. Again importing it will definitely work out cheaper than changing it at the Audi service.
3. Get a turbo from a totalled Audi which has the same turbo. Your location says Mysore. I am not sure if there is a second hand market like Russel market in Bangalore, where you can scour and get a unit. You need to do due dilligence if you go this route. Take a competent mechanic if you are prefer this route.
4. Get the turbo repaired from JC road, Bangalore. There are few good competent shops who can do it.

[shaheenazk]

Originally Posted by sharc_biker

This is a video of the turbo in action:

There seems to be oil leakage as well. It can be seen in the last few seconds of the video. Have it examined.

[ajmat]

Heres is what happened to my neighbours turbo. A Vane got damaged
https://www.team-bhp.com/forum/banga...ml#post4423370 (Multi-brand Car Servicing & Repairs - Bay 6 Motorworks (Bangalore))

[speedmunster]

It is definitely a blown turbo. I do not know of Mysore or Bangalore but I can recommend you a reliable company in Hyderabad who rebuilds turbochargers with new cores. I can DM you his details and phone number if you are interested. Just let me know.

Cheers.

[sharc_biker]

Originally Posted by dhanushs

Looks like you have a blown turbo. The bush is shot, changing the core assembly alignment making it touch the casing. Hence the sound.

Lot of reliable turbo repair guys in Bangalore. I remember a dedicated shop for turbo's in JC Road Bangalore, where you get a brand new turbo at a fraction of the cost from the company.

I have spoken to a couple of turbo repair guys in JC road Bangalore. One said he could do it. He too said the shaft is misaligned and will try to change the bushes and see. If not, the turbo core needs to be replaced and quoted 34000 for the new turbo core. But I am not sure how reliable he is. Please let me know if you know any reliable turbo guys. Thanks!

Originally Posted by shaheenazk

There seems to be oil leakage as well. It can be seen in the last few seconds of the video. Have it examined.

Yes. The mechanic said its not a big deal since the oil drop occurred at redline rpms. I think it will be rectified when the turbo is repaired. Will keep track of it.

Originally Posted by ajmat

Heres is what happened to my neighbours turbo. A Vane got damaged
https://www.team-bhp.com/forum/banga...ml#post4423370 (Multi-brand Car Servicing & Repairs - Bay 6 Motorworks (Bangalore))

I got a quote for a new Garrett Turbocharger with a 3 month warranty against manufacturing defects for 84000. But with a 5 week waiting period.

Originally Posted by speedmunster

It is definitely a blown turbo. I do not know of Mysore or Bangalore but I can recommend you a reliable company in Hyderabad who rebuilds turbochargers with new cores. I can DM you his details and phone number if you are interested. Just let me know.

Cheers.

I wouldn't mind sending it to Hyderabad if there is a reliable company to repair and rebuild with new cores. Please do share his contact details. Thank you.

[evil_grin]

Originally Posted by speedmunster

I can recommend you a reliable company in Hyderabad who rebuilds turbochargers with new cores. I can DM you his details and phone number if you are interested. Just let me know.

Cheers.

Would you please share the name of the company and address here? DM helps one person. Post helps anyone who lands on this page.
I too am in Hyderabad and have a car that has a turbo. At some point of time in the future it will be helpful for me as well.

[speedmunster]

Originally Posted by evil_grin

Would you please share the name of the company and address here? DM helps one person. Post helps anyone who lands on this page.
I too am in Hyderabad and have a car that has a turbo. At some point of time in the future it will be helpful for me as well.

I agree. The company is Star Diesel. The owner's name is Afzal Khan. His number is +919000016661. I had changed my Innova's high pressure fuel pump from there and at that time got to see a lot of turbos being rebuilt.

Cheers.

[samish_g]

Originally Posted by sharc_biker

I got a quote for a new Garrett Turbocharger with a 3 month warranty against manufacturing defects for 84000. But with a 5 week waiting period.

The whistling sound hints at a problem with the turbo. But before concluding, would would recommend the following checks.

a) Is there any white smoke during acceleration?
b) Is there any play (axial or vertical) in the turbine shaft?

Were you able to contact any ASC in Bangalore and get a quote? (Assuming you are from Mysore). IMHO, it is better to get it done at an ASC.

[eldiablo]

Hey,

My 2007 Octavia is losing power intermittently w.r.t the turbo. I was recommended a turbo replacement after it showed signs of wanting to give up, with evident oil leakage.

My car has been going to one Mr Abhishek Karkare for the past five years or so. He's good with what he does and suggested that the core be replaced, instead of the entire setup.

I spoke to him after reading your post. He is of the opinion that the turbo core replacement should do the trick. However, the chassis number is required to be assured that it is the right fit considering the model and the age of the vehicle.

He also mentioned that a new turbo can also be sourced.

Should you be interested in having a word, I can share his contact details. He's located at Kiwale (Pune).

Regards.

[RodeoSport]

Honestly I would not bother with a core etc etc.

I see that you are based in Bangalore, Google StellarTurbo or reach them on their instagram handle.

Binoy should be able to sort you out a new turbo relatively quickly.

PS the 140 hp and 177 hp turbos are interchangeable and same price

[abhayankara]

Hi Sharc_biker,
I am not sure how far this would help you.
This is about my Skoda Laura 1.9PD which had a turbo failure 2 years back at 1,06,000 kms. We were returning from Chickmagalur after attending a wedding and suddenly started hearing a high-pitched whistle sound, I stopped and checked but could not notice anything. But after starting journey back I could not drive above 50~60 kmph. Incident happened near nelamangala when we were ~90kms away from home, somehow managed to drive and reached home safely.
Next day I took the vehicle to Skoda ass and asked them to diagnose. They confirmed that it was a turbo failure and quoted me ` ₹1,80,000 (When I asked for the brake up they had included all the relative components of turbo + turbo). I took the vehicle back without repair and started looking for other alternates, that is when I met Mr.Sayedh who has a shop in JC road. When I contacted him and gave the part part number to check for the availability, he confirmed he had that part in stock but before that he shared a mechanic contact and asked me to confirm again if turbo was the issue.
With his recommendation I contacted Venkatesh(mechanic) near sarakki signal, after a short trail run he confirmed it was turbo failure and told he would first disassemble turbo later we will decide to source the entire turbo or go for rebuild. By evening Venkatesh confirmed that core had gone bad, and we can go ahead with new core (turbo rebuild).
Sayedh had two makes of core of which I choose one which costed me ~ ₹15,500 including rebuild labor cost. Other one was around ~12,500. Later Venkatesh assembled turbo back and he charged me only 3K for the labor. Now my car has clocked close to 35k after the rebuild, I have no issues with the pick up or the vehicle.

Sayedh - 9845207865
Venkatesh - 9448064257




New core