Poor AC Diagnosis Help VCDS

[kashtyaatsi]

After reading a few AC threads I still can't determine if my problem is the RCV. My AC isn't really delayed it's mostly just poor performing and sometimes it can cut in and out. Under 80F outside and the AC doesn't have a problem, but once it hits the 90's it just can't keep up. Took some readings from vcds and I'm hoping someone would have an idea of the actual issue. Just recently had the system recharged as well. The car was fully warmed up when the test was taken.



IDE00025 Coolant temperature 75 °C
IDE00198-ENG100282 Refrigerant pressure-MUX Kaeltemitteldruck 14.2 bar
IDE00965 Compressor shut-off condition Compressor active: no shut-off condition is present
IDE00967 Compressor current: specified value 0.820 A
IDE00968 Compressor speed 1000 /min
IDE00969 Compressor load 8.1 Nm
IDE00970-ENG103807 Coolant fan activation: actual value-MUX Lueftersteuerung 56.0 %
IDE00971 Coolant fan activation: specified value 60.0 %
IDE00982-ENG103939 Temperature downstream of evaporator-MUX Temperatur nach Verdampfer 19.0 °C

 

[needsmoarturbo]

Yes I would say just go for the rcv. Go with a rkx brand. Your reading shows that it is trying to put max current of ~820 mA to the valve. It's the most likely thing that causes the ac to work some times and not others..

 

[mikerob97]

Please keep us posted on whether changing out the RCV helps. My JSW does the same thing. Below 90F, seems to keep the car cool. Abover 90F, just does not keep up.

 

[kashtyaatsi]

If no one else has any other ideas I will probably go ahead and replace it since it's the cheapest and easiest thing. Hopefully that's the issue.

 

[Golfer12]

In my golf for 6 months it had warm air finally ordered the rcx on ebay had r13 recharged
And it worked like a charm worth every penny

 

[kashtyaatsi]

Got the valve put in and it fixed the problem. Evap temps now reading 0°C