1,2 TSI Clicking noise from the dash (relay sound)

[ipdialup]

Hi,

Thanks for this, and yes i couldn't quite believe it when the dealer told me it was a characteristic of the car.

What engine code is your 1.2TSI, I think it should be CBZB, which doesn't appear on the layout posted.

I'll have to pull the cover from the fuse box on my car and take a picture to post here, so see what relay's are populated in the panel.

I'm wondering if it's possible to replace the relays with silent ones if such a thing exists?

I also own a skoda yeti with the 1.2TSI engine, and I get no click's from inside this car when driving along, I'm wondering if that's because the fuse box is under the bonnet on this car.. or Skoda engineered the relay/switching system better?

Be good to get to the bottom of this, even if it does mean swapping a couple of parts.

If you sound proof the relays (i.e. surround them in sound proofing) would they suffer from overheating?

Thanks,


Andy.

 

[iandjm]

Hi,

Have any of you gor the 1.2tsi with Stabilility? If so has your car got rear disc brakes?

Cheers

 

[ipdialup]

Hi,

Yes I have the ESP program on my TSI SC Sport, and it has rear disc brakes.

I didn't like the look of the Drums behind those nice 17" alloys so specced ESP to get rear discs

Do you think this might have something to do with it?

Thanks,


Andy.

 

[iandjm]

Hi,

Yes I have the ESP program on my TSI SC Sport, and it has rear disc brakes.

I didn't like the look of the Drums behind those nice 17" alloys so specced ESP to get rear discs

Do you think this might have something to do with it?

Thanks,


Andy.

Hi Yes, ESP requires discs I believe. Im glad to hear that you have them. Looks like the borchure is wrong.

Cheers

Ian

 

[ipdialup]

Now back to the relay clicking problem..

I notice you have a 1.6 FSI rather than the 1.2 TSI.

I take it you don't get relay click's from under the dash while engine speed transitions 2000rpm.

 

[iandjm]

Now back to the relay clicking problem..

I notice you have a 1.6 FSI rather than the 1.2 TSI.

I take it you don't get relay click's from under the dash while engine speed transitions 2000rpm.

Hi,

Yes mine is the old vw 1.6 DSG. I get no noises like that at all. The car runs beautifully

 

[znww5]

Re: relay clicking. I have the 1.2TSi, complete with relay clicks, and it occurred to me that maybe there are solid state relays out there which could be substituted?

They have no moving parts and therefore no way of making a clicking noise. Maybe some car electrical guru could indicate whether such devices have reached the car industry yet?

 

[hstjern]

Hi,

Thanks for this, and yes i couldn't quite believe it when the dealer told me it was a characteristic of the car.

What engine code is your 1.2TSI, I think it should be CBZB, which doesn't appear on the layout posted.

I'll have to pull the cover from the fuse box on my car and take a picture to post here, so see what relay's are populated in the panel.

I'm wondering if it's possible to replace the relays with silent ones if such a thing exists?

I also own a skoda yeti with the 1.2TSI engine, and I get no click's from inside this car when driving along, I'm wondering if that's because the fuse box is under the bonnet on this car.. or Skoda engineered the relay/switching system better?

Be good to get to the bottom of this, even if it does mean swapping a couple of parts.

If you sound proof the relays (i.e. surround them in sound proofing) would they suffer from overheating?

Thanks,


Andy.

I'll send the friendly mechanic I meet a note to see what has to say about soundproofing and overheating. And also if he can clarify a bit about the "these parts has gone threw a few revisions".
I can't imagine our cars being that different from vw polo or other cars so would be interesting to see if they suffer from the same problem.

Worst case i'd say give seat a ring and say tell them that you aren't happy cuz the car simply has "too much character"

 

[NetworkMan]

The guy just rang me and gave me an in-depth explanation of the problem and told me that it was the relay for the cooling of the turbo that gave the clicking noise

The following is for nerds/anoraks only!

I've just been reading the VW self study guide SSP443 describing this engine which AFAIK is so far only available in German. There are two almost independent cooling systems, the main one for the engine and a second one for the intake air intercooler and the turbo. This second one uses an electric pump, rather than the conventional engine driven pump. Probably when the turbo boost increases, the intake air temperature increases and the cooling pump is switched on via the relay making the click. I don't think I'll bother about the sound myself; it's not really a bother.

 

[ipdialup]

Hi,

I'd forgotten I started this thread

It's a shame they didn't think about positioning this particular relay under the bonnet away from the passenger compartment, I've got used to the clicking noise now.

Interesting that they chose to have a different cooling circuit for the turbo / intercooler, rather than drive if from the main engine cooling circuit, I guess this seperation would also enable the cooling system for the turbo to run on once the engine is stopped to prevent heat soak into the turbo after a drive??

They could have made the actuator system on it drive of temperature of the water in the cooling circuit rather than engine speed / throttle position though, which would make it less tick-tack as the engine transitions 2,000rpm.

Thanks for the info.


Andy.

 

[znww5]

Not bothered by the clicking personally, but that's very interesting. It would also explain the faint whirring noise you can hear for a while after shutdown. This must be the secondary circuit's electric pump circulating coolant - in fact with the bonnet up you can hear the water feeding into the coolant reservoir if you listen carefully.

I wish there was more information around on this interesting little engine!

Thanks for the info !

 

[altinnovation]

My music is so loud I don't even hear the engine

 

[NetworkMan]

Hi guys,

They could have made the actuator system on it drive of temperature of the water in the cooling circuit rather than engine speed / throttle position though, which would make it less tick-tack as the engine transitions 2,000rpm.

They could have made the actuator system on it drive of temperature of the water in the cooling circuit rather than engine speed / throttle position though, which would make it less tick-tack as the engine transitions 2,000rpm.

I gather from reading that they use the temperature of the intake air. That is the temperature of the air between engine and intercooler. It says temp of water in this circuit can be 100 degrees C different from engine coolant temp. They do indeed say that the pump can run after engine stop though most turbo cooling during running is from oil rather than water.

It's a very fancy engine. They have separate thermostats for cylinder block and cylinder head. Also during warmup the special engine driven pump is run in a mode without actually pumping anything at all.

 

[ipdialup]

"I've just been reading the VW self study guide SSP443 describing this engine which AFAIK is so far only available in German"

Any chance you can post an english translation

I'd love to Don the anorak and have a good read of how it all works!

 

[NetworkMan]

Any chance you can post an english translation

My German is not really up to that task!

I just muddle through as well as I can and get some help from pasting into Google translate.

I found it here:- http://www.vwclub.bg/~dragocl/pdf/SSP/

 

[znww5]

Thanks for the link - my German goes about as far as ordering a coffee, but we can all look at the pretty pictures

 

[ipdialup]

Thanks for the link..

Time to brush off the GCSE level german...

 

[CandyWight]

Mine is also the 1.2 tsi - I don't find the noise a problem - I think I would worry now if I didn't hear the noise! I like that little bit of character in her!

 

[Fusster]

There is a tpi released for this noise No 2026431/2.
The fix is basicaly to relocate the relay to under the bonnet by the battery.
If you want rid of the noise contact your dealer and it can be sorted for you under warranty.
For info the relay is for the aux water pump (i think someone did say this )

 

[ipdialup]

Hi,

Thanks for that very useful info, any idea's what's involved in the modification?

I feel I will be getting in contact with my local Seat dealer very soon

Thanks,


Andy.