TSI squeal noise problem on acceleration

[rosslm]

I am looking at buying a TSI 90 however with the Comfort package you still get the Trendline seat trim so I have had to take another look at the TSI 118. Had a good test drive today, the demo had about done 3500K, windows down I did hear the so-called squeal once but I have to say I didn't find it to be loud or even annoying. I would describe it a bit like a whip sound probably less than a second. I am sure a fix couldn't be to far away. Compared to myriad turbos I hear waste gates popping, cracking and farting generating all manner of strange sounds this was tame.

[Tommy]

Hiya

I've been told that the screech comes from the supercharger clutch. VW at this stage states that this is normal and a known "characteristic" of the car. If this is so, why is this not advised at the time of purchase? They know if they did that they'd lose more than a few sales... This is an issue for sure... a very annoying one.

I was told that whilst testing my car at the workshop the other day, the DSG completely failed. I was at first told that this too was "normal". I now wonder what damage may have been done to my car while I've been driving it around with a faulty DSG? I believe that the DSG is around $14 000 to replace, don't know if this includes labour. My calculations put repairs to my car in the region of $30 000. This is incredible considering that my car is only 3 months old and VW kept saying that nothing was wrong with it.

VW why won't you admit defeat and give me a new car? Its been in your damned workshop for 15 days now with no end in sight. This car is a lemon, purely and simply....

[Guest]

The super charger and water pump are the same clutch!!!

[Guest]

Coastie i dont really understand your problem? Would you rather wait for a long term fix? So noise is than gone for good? or just a short term lube or replacement? So the noise then comes back. My bet is they will have a replacement part with a different material for friction lining so noise is forever gone.

[guliver_twist]

How far away is the longerm fix?

[Tommy]

Hi There

I just had my DSG replaced under warranty and it seems to have made the supercharger screech disappear so I'm wondering if this is just a coincidence or if the noise is related to the transmisison in some way?

[guliver_twist]

Hi There

I just had my DSG replaced under warranty and it seems to have made the supercharger screech disappear so I'm wondering if this is just a coincidence or if the noise is related to the transmisison in some way?

Should not be...as mine is manual and exhibits the squeak..

[Paul_OH]

Back to the MkV, I just returned from a 3200km driving holiday and upon return nary a squeak to be found. I can't make it happen no matter what I do, strange and eerily quiet!

[rosslm]

Here is a good overview of the technology, I suggest the electromagnetic supercharger clutch may have been changed slightly since the original GT 125KW where it doesn't seem to be as problematic. Or a slight change of design or possibly a batch of clutches causing noise problems in Golf VI TSI 118. I suspect it is in the dynamic supercharger range from approximately 2000-3500 RPM that this noise would be annoying as it can cut in and out depended on load variation at a steady speed

see

http://www.volkswagen.com/vwcms/mast...echnology.html

click TSI twincharger link

next click More efficiency link and [1] The interplay of turbocharger and compressor [2] Dynamic compressor control

then click More Power link and [1] The individual components [2] Processes when pulling away

I have read some posts where the compressor can be heard at idle, this may be the case after hard driving where the motor management system is anticipating the need for charge at idle speed, normally at idle the supercharger is off

this will give a good overview of the technology

hope this helps

[cktsi]

see

http://www.volkswagen.com/vwcms/mast...echnology.html

click TSI twincharger link

next click More efficiency link and [1] The interplay of turbocharger and compressor [2] Dynamic compressor control

then click More Power link and [1] The individual components [2] Processes when pulling away

That's a really cool link!

And yes... even on the website, when I press the accelerator hard in the Flash presentation I get the squeak, so it must be a feature!!



(just joking)