TSI squeal noise problem on acceleration

**coastie** · 11-07-2009, 11:48 AM

It is from the waterpump magnetic clutch upon acceleration. I have DSG but it is related to the waterpump pulley on acceleration not the gearbox.

**coastie** · 23-07-2009, 09:03 PM

Vehicle has now been officially inspected by the volkswagen dealer for the second time and again I have been advised this is a known operating noise for which there is no repair available.

They used an air compressor to blow around the supercharger/waterpump pulley and claim the noise is now gone but they expect it to return. Have driven the vehicle and noise is gone. Dealer suspects it will return, he likens it to a noisy air conditioner clutch and the metallic slip they can get when full of dust.

Not happy with response from VW but the noise is gone for the moment. When it returns I will be back on the VW Tech for a solution. I even mentioned the replacements made by Burwin and the suggestion about lubricating it from WA but they would not budge on the NO FIX available and we won't do any more.

**cktsi** · 25-07-2009, 12:47 AM

Unfortunately my comfortline 118 TSI started developing this problem monday of last week. I called Five Dock VW who encouraged me to take the car in, but they said that this is a known issue & "feature" of the car.

I'm not going to accept that answer.

I'm also glad to hear Dermot's answer. It really does sound as simple as lubricating a belt or some kind of part to make the noise go away. Whilst replacing the water pump may make the sound go away, I get the feeling it will just return without some good ol' lube.

Hopefully if enough of us 118TSI owners complain, VW will realise there's a systemic issue and will do a recall of some kind.

**Paul_OH** · 25-07-2009, 01:12 AM

This has been discussed a little here:
http://www.golfmkv.com/forums/showth...&highlight=tsi

The more I listen to it the more I think it is the S/Charger belt slipping momentarily upon the magnetic clutch engaging. For some reason though if I ease on the throttle to full boost it is silent however if I stomp it then it squeaks.
I'm still not too bothered though if a fix is found I'll be lining up to get it sorted.

cheers,

Paul

**GTom** · 25-07-2009, 01:37 AM

I'll put my hand up for another GT owner who has the noise.

Like Paul haven't really let it bother me as it happens rarely and before the supercharger (or while it is about to kick in)

**guliver_twist** · 25-07-2009, 11:48 AM

I think I have started noticing this on my car as well... It seems to happen around the 1800/2200 RPM mark... Its not very loud but can be heard..
also I don't accelerate hard when I hear it..
I do hope VW releases a fix..

**coastie** · 25-07-2009, 03:06 PM

Well I've just done 250km's since the dealer had a go at fixing it and you can guess what has happened.

Not as prominent as it was but I can still make it happen on some acceleration. I suspect it will progressively worsen to the point where it happens all the time upon acceleration. Mine didn't matter if I stomped it or applied it gently just the movement of the accelerator down would cause the squeal.

Back to the drawing board for VW. Being a "feature" or "known operating noise" was not featured when I bought the car. Perhaps an addendum to the advertising material. TSI the squeak included.

**cktsi** · 25-07-2009, 08:14 PM

Originally Posted by Paul_OH

This has been discussed a little here:
http://www.golfmkv.com/forums/showth...&highlight=tsi

The more I listen to it the more I think it is the S/Charger belt slipping momentarily upon the magnetic clutch engaging. For some reason though if I ease on the throttle to full boost it is silent however if I stomp it then it squeaks.
I'm still not too bothered though if a fix is found I'll be lining up to get it sorted.

cheers,

Paul

It does sound like something to do with the belt suddenly engaging whatever pulleys are engaged when the supercharger clutch comes "on" hard during moderate to heavy acceleration. I like the theory someone had about it actually being a pulley.

Hmmm... unfortunately it will bother me more than most cos I have the sunroof open a lot. I like hearing the whistle & whoosh of the supercharger!

I can do without the chirp !!

Well Coastie, I think it won't be as bad as you make out. It will probably be like what the rest of us experience - only under heavy load. For those with a DSG (like me)... that'll be most of the time if you leave it in "D"

**coastie** · 27-07-2009, 10:02 AM

Dealer says it is the dust in the pulley/clutch on the waterpump slipping when the supercharger is just starting to boost causing a "millimetre of slip" and thus the noise. When they used the compressed air to remove the dust the noise went away although temporary. They are standing by the normal operating noise no known fix statement.