TSI squeal noise problem on acceleration

[Paul_OH]

Interestingly on my GT I had intermittent chirp or squeak between 10K & 20K km but in the last 10-15000km or so it hasn't made a noise, FYI I'm now at 37000km.

[ctan]

Hey coastie, I am curious if the water pump replacement has fixed the squealing noise. That is about a month ago when it was replaced.

[silvaxt]

jumping in a little late here but my experience is of a 5000 kms old 118 TSI that delevoped the much talked about "squeak" - just as the SC kicks in. Took the car for a drive with one of the guys from the service department at Essendon and he comfirmed the noise came from the water pump / supercharger clutch assembly - known issue. Anyway the pump has been replaced under warranty with a revised version so I hope thats that. Other than that, the car has been great

[coastie]

Hey coastie, I am curious if the water pump replacement has fixed the squealing noise. That is about a month ago when it was replaced.

Yes no more noise, the car is great 2300km further since the replacement. It has just had its first birthday and I still feel like I'm driving a brand new car. The car has over 25000km.

[coastie]

I dont mind the Squeak either.
".....explain to the customer that this noise is normal and that no damage to the solenoid clutch will occur after the warranty period."
(from the VW Technical Service Handbook)

Just hypothesising but if there is a release of noise then there is a loss of energy and frictional loss creates wear as indicated by the noise. Consider that your tyres made a chirping noise due to slip on the road each time they took off. (not that that has ever happened) We all know that this is wearing the tyres faster than if they were to grip and not make any noise.

[MIRSAD]

According to German magazine Auto Bild and some forums new pump is not fixing squealing noise as it was expected.

This is translation from Auto Bild:

Google Translate

[Cossor]

Can appreciate concern re this clutch. got me worried too.
Hope my MY11 build will be better.
However, clutch MUST have some slip on engagement.
Consider dry clutch system in DSG. Quite possible also makes slight noise on engagement, but not audible, due to being inside housing.
Do not know design of clutch, but consider it possible magnetic system used to disengage, rather than engage.
In which case, if magnetic area made from ferrite (Ceramic) this is extremly hard surface. EG, chirp not due to metal on metal 'spalling'

[Stoney!]

Haha, agree totally, the more sounds thre better!!! Go Golf!!!

Stoney!

[prise]

My TSI is making the noise occasionally with the colder weather so I had a look at what the VW erwin database had to say about the noise for my VIN last weekend. Bottom line is that it is a recognised fault, they have made a production change and there is a part replacement you can get done under warranty if you can demonstrate the noise to the dealer. My last car (Mazda 6MPS) had a diff harmonic at a specific road speed and Mazda decided to do nothing and tell all the owners it was a normal characteristic of the car so it's good to see VW being proactive in this instance.

Here's an abridged version of what they had to say:

Description:

Clear, brief, high frequency squeaking noise.

Technical background:

As the water pump builds up with solenoid clutch, the one piece anchorage plate on the outer pulley starts to vibrate. The volume of the noise depends on the operating conditions.

Production Change:

Improved water pump with solenoid coupling from engine no.

CAV* 154 174

Measure: (I've omitted the bit about stationary testing as it can't be performed with DSG's which most of us have)

1. Constant speed in 2nd or 3rd gear at 2000-2200 rpm
2. Brief acceleration (1 second)
3. Repeat a few times

With engine codes BMY, BLG, BWK, CAV* fit the water pump with solenoid coupling with part number 03C121004 J.

[Guest]

My TSI is making the noise occasionally with the colder weather so I had a look at what the VW erwin database had to say about the noise for my VIN last weekend. Bottom line is that it is a recognised fault, they have made a production change and there is a part replacement you can get done under warranty if you can demonstrate the noise to the dealer. My last car (Mazda 6MPS) had a diff harmonic at a specific road speed and Mazda decided to do nothing and tell all the owners it was a normal characteristic of the car so it's good to see VW being proactive in this instance.

Here's an abridged version of what they had to say:

Description:

Clear, brief, high frequency squeaking noise.

Technical background:

As the water pump builds up with solenoid clutch, the one piece anchorage plate on the outer pulley starts to vibrate. The volume of the noise depends on the operating conditions.

Production Change:

Improved water pump with solenoid coupling from engine no.

CAV* 154 174

Measure: (I've omitted the bit about stationary testing as it can't be performed with DSG's which most of us have)

1. Constant speed in 2nd or 3rd gear at 2000-2200 rpm
2. Brief acceleration (1 second)
3. Repeat a few times

With engine codes BMY, BLG, BWK, CAV* fit the water pump with solenoid coupling with part number 03C121004 J.

That TPI has been out for about 2years now!
Also the new water pump is still not fixing the noise on some
They are testing a new compound at the moment

[prise]

Just as well it's not bothering me then!

[darkfriend]

Hi all,

Bought my 118TSI in March 2010. Had read this thread and asked the dealer at the time if the problem had been fixed. Dealer brought out the head mechanic from the service department who assured me the problem would not be present in the new TSIs. Picked up the car in June. Build date Feb 2010.

Have had the chirp from 2600kms. I am a little annoyed!

[prise]

The chirps been gone for two weeks now - missing it already!

[coastie]

It may return just not as loud, mine comes and goes depending on the temperature.

[Stoney!]

Yeah my chirp has gone too also missing it...

Stoney!