TSI squeal noise problem on acceleration

[coastie]

Waterpump replacement is what they did for mine this week.

[Corey_R]

So just to clarify because I haven't read the entire thread but I am interested here...

The squeal is caused by the waterpump and replacements of that is the solution.

But this is different from the 'other sound' which is caused by the solenoid engagement the supercharger and there is still no solution for that issue.

Is that right?

[logger]

The "other" sound is considered normal so perhaps no solution in being sought.

The supercharger solenoid and clutch is attached and integral with the water pump. Both sounds emanate from this same area. One, the "Squeak/Chirp" is thought to caused by the clutch material, which I understand has been changed on the new waterpump. The second noise, the "clicking" sound, can occur on solenoid disengagement. "When the magnetic clutch is switched off, three leaf springs pull the friction plate back to the starting position. Due to the high forces, a normal “clicking” of the magnetic clutch can occur".

I am not sure how prevalent the second sound actually is on the MK6. It predates the CAV engine and occured on the MKV BLG. So one would think they had already made mods to the WP clutch, prior to the latest fix to minimise its occurrence.

The "Squeak/Chirp" seems to be more common. I get it on my car. But not the clicking.

It will be interesting to see if you get a new waterpump too Kriss.... and if they roll it out as a warranty fix for the rest of us who are effected.

[Corey_R]

Thanks logger

[RW1]

Just been advised by VW here in the UK that a resolution has now been found to the squeal problem. They have advised me to contact my local dealer asap who will fit new parts under warrenty - Did'nt say what parts but will find out tomorrow when I book the car in.

Yes it will be interesting to hear how you get on in the coming months.

In Germany and UK, factory build post pump change new Scirocco 1.4TSi's (about Wk04/2010 build complete onwards) are reporting the "chirp" earlier, as early as 300 miles from new!

Replacement pumps fitted with the new modified clutch are reporting at about 1,000 miles.

This is the CAV type engine with the new pump: 03C 121 004 J, a new version of "J" reputed not to squeak. (VW haven't changed the part number!)

I somehow think VW have not solved it yet!

C.

[POLARBEAR666]

Just been advised by VW here in the UK that a resolution has now been found to the squeal problem. They have advised me to contact my local dealer asap who will fit new parts under warrenty - Did'nt say what parts but will find out tomorrow when I book the car in.

Bet they are just giving you ear plugs... or maybe a can of WD40

[Guest]

Yes it will be interesting to hear how you get on in the coming months.

In Germany and UK, factory build post pump change new Scirocco 1.4TSi's (about Wk04/2010 build complete onwards) are reporting the "chirp" earlier, as early as 300 miles from new!

Replacement pumps fitted with the new modified clutch are reporting at about 1,000 miles.

This is the CAV type engine with the new pump: 03C 121 004 J, a new version of "J" reputed not to squeak. (VW haven't changed the part number!)

I somehow think VW have not solved it yet!

C.

03C 121 004 J is the new part number for the waterpump/scharger clutch and does not squeak we fit one to a car about 4 months ago and he still said its not making a noise no noise is good noise

[triode12]

It is probably just the friction material that they USED to use on the Golf GT and GT sport.

No mk5's suffer from the squeel as far as I am aware. Anyone know of any mk5's with the issue?

My MKV GT TSI with 23K kms on the clock is squeal less.

I wonder if VW's quest to cut costs with the MkVI has also cut quality and ultimately reliability as well.

[MariusGT]

08 gt sport tsi... Occasional squeal.

For some (maybe strange) reason it doesn't bother me. In fact it jut reminds me the s/c is switching away doing it's thing building rpm's/exhaust gas for the turbo.

I say again- Love driving with windows down stereo off... Just so I can listen keenly to the little 1.4 gem!!!

Im yet to hear if the "squeal" has any detrimental performance or other effect? Other than annoying some people?

[triode12]

08 gt sport tsi... Occasional squeal.

For some (maybe strange) reason it doesn't bother me. In fact it jut reminds me the s/c is switching away doing it's thing building rpm's/exhaust gas for the turbo.

I say again- Love driving with windows down stereo off... Just so I can listen keenly to the little 1.4 gem!!!

Im yet to hear if the "squeal" has any detrimental performance or other effect? Other than annoying some people?

Marius,
You are not referring to the normal SC whine/whistle (like a whistling kettle on the boil) do you? Mine does that as would all SC'd cars but doesn't squeal.

[MariusGT]

Marius,
You are not referring to the normal SC whine/whistle (like a whistling kettle on the boil) do you? Mine does that as would all SC'd cars but doesn't squeal.

Oh no- I know the myriad noises coming from the engine and the mechanical whine of the sc and whistle of the turbo are not what I meant-- it is a distinct short sharp squirrel squark noise when the s/c kicks open..

[Frankenstrat]

Here's a link to YouTube with the chirruping noise in evidence in this clip. You may want to read the comments by Mirsad1999.

[logger]

08 gt sport tsi... Occasional squeal.

For some (maybe strange) reason it doesn't bother me. In fact it jut reminds me the s/c is switching away doing it's thing building rpm's/exhaust gas for the turbo.

I dont mind the Squeak either.

... I'm yet to hear if the "squeal" has any detrimental performance or other effect? Other than annoying some people?

".....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)

[Olaf the Golaf]

118 TSi manual and at about 1200kms i've developed the squeak.

Will be contacting my dealer later today to try and get it sorted.

[MariusGT]

Thanks for that logger..

I didn't think it was the sound of a suffering engine- more a quirk of the unusual engineering.

So how many sounds have we got going on now?

chirp/squark, hiss/whine, whistle, fluffy fart (dsg!)

go golf!!!!