Screech

[Troy stanton]

So I have a 2008 cr170 Audi tt
I have a loud screech coming from the turbo area
I can unplug the turbo actuator and the noise goes completely
I can also cycle the ignition 10 times and the noise goes completely
When I’m driving and the screech happens, I feel a lack of boost / power
Any ideas
Thanks

 

[Dannyboy]

Sounds like either a sticky turbo vanes/ actuator or your turbo may be past its best.

 

[Troy stanton]

Sounds like either a sticky turbo vanes/ actuator or your turbo may be past its best.

Hello Danny
I thought that however given the fact it’s on and off, and the turbo seems fine when I cycle the ignition, I have a feeling it’s actuator related

 

[Nevada_TDI]

I am a member of the " it sounds like your turbo is tired" group.
After you cycle the key 10 times, how long does it take for the noise to come back?
When the screech happens, you lose boost?
Do you have access to Vag-Com? You can cycle the actuator while parked with the engine running ( of course ) and see if starts to screech without a load applied to the turbo.

 

[ghohouston]

Sounds like a pre turbo exhaust leak, or possible turbo failure. Hard to say.

 

[Troy stanton]

It comes on after the car cools back down / the next day
I know the turbo isn’t broken because when it has no noise, I have full boost, surely a broken turbo would be constant
No access to vagcom

 

[BobnOH]

Actuator only opens and closes the vane assembly. Could be a sign of imminent death or it could be fine. They spin at a redicuosly high rate, don't take much to make a shrill squeak.

 

[Troy stanton]

Well I’ve just fitted an actuator
No change
That leaves turbo

 

[csstevej]

Yeah I’m with the bad turbo group……the loud screech happened to me shortly before the shaft snapped in half.

 

[Troy stanton]

Yeah I’m with the bad turbo group……the loud screech happened to me shortly before the shast snapped in half.

Did you get round to replacing the turbo? How long is the job and what can I expect to pay for a good turbo? Thanks

 

[csstevej]

Yes I did , my car is a 2000 vw new beetle though.
I did the work myself , new remanufactured turbo Garrett VNT 15 , and new oil supply line from one of our reputable vendors on here.
I pulled IC piping and flushed them out.
I pulled the GP’s out and spun the engine with rags over the holes to see if any oil was injested…GP’s were bone dry and no oil came out.
All an all I probably spent $1000.00 US dollars and about 8-10 hours of labor.

 

[Troy stanton]

2.0 tdi screech from turbo area

youtube.com

Here is a link of the sound
Thanks

 

[csstevej]

After listening to the video…..sounds like you may have a boost leak……I’d be looking for a loose pipe , split pipe etc……