Golf 1.6 FSI - ECON Button not working

**willdudeuk** · 09-03-2021,06:38 PM

VW quoting crazy money for it!!

£76.94 including the VAT.

**Crasher** · 10-03-2021,09:46 AM

ECP sell a Mahle branded sender (this is part of the Mahle, Hella, Behr "premium line") for less but beware of really nasty cheap ones https://www.eurocarparts.com/search/236440030

**willdudeuk** · 11-03-2021,11:58 AM

Well I manged to source an OEM part with seal for a £10! It was in an unopened bag from TPS.

But after removing the old one and fitting the new one (they do look different, the newer one has a longer cylindrical part than the older one......)

Still no joy.....guess I need to get it regassed....and then see....

But I am concerned it's just going to leak out all the gas again.....

Anyways replacing the sensor can be ticked off the list (condensor / radiator thing is also a new part but not genuine / aftermarket from ECP.....EIS Germany one).

What should I be doing next to solve this issue?

If after regas.....and it does same thing again....what should I be looking at? Compressor? Or pipework?

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**Crasher** · 11-03-2021,01:59 PM

A competent and trained regas technician will do a vac and leak test before recharging. HOWEVER the compressor used has a party trick... EVEN when fully charged, with no codes and the compressor running it still may not work. This is due to the compressor being a constant drive modulated displacement unit and the modulator failing

**tditaff** · 14-04-2021,11:45 AM

@willdudeuk where did you source the TPS sensor from?
My AC has just stopped working so thinking of changing the pressure sensor - VCDS shows 0 in pressure meas block.

**willdudeuk** · 14-04-2021,12:41 PM

Managed to source one on an online auction site.

didn’t solve my problem though.

haven’t had it regassed and tested for leaks so don’t know what the issue is yet.

**Crasher** · 14-04-2021,12:41 PM

If it is showing zero it is probaly telling the truth AND could also be the cause of the leak.

**willdudeuk** · 14-04-2021,01:26 PM

What measuring block shows the pressure for the ac system?

**tditaff** · 14-04-2021,03:31 PM

Within the HVAC control module, I used the advanced measuring info screen and you can choose to see whatever info you require.

After searching on a few forums it seems that the pressure sensor can be the cause of quite a few faults/failures. Will order one and once fitted, continue investigations.