sorry if I'm intruding but I comincierei to check the pressures ,which pressures you to both the low and high
I had the same problem on my Volvo, have fixed by replacing the radiator fan under warranty.
The symptoms were exactly those described.
if you connect the pressure gauges and check the pressures you notice if the fan cool enough the condenser cio? if the high-pressure arrava 20 and normal that you have a problem cooling the high-pressure should not exceed 14 max 15 bar if off the fans you get to 20 and the compressor goes into stall correct me if I'm wrong
Those cars are very sensitive to the amount of gas in the air conditioner, and a difference, even minimal, can? give it to malfunction.
In addition, there are versions that mount 750g and versions that stick in 850, you can verify the label located on the box the cabin air filter located on the battery compartment. If you put 850 in the car, that mounts to 750 up too much pressure and it goes into the block, the climate.
Also you must tell me if you have the manual climate control, with knobs or the digital one with lcd display. In the second case, it could be another problem then I solve it like above, I will illustrate how to solve.
have you checked the compressor ? see with pressure gauges pressure if the compressor at the minimum speed to pump the gas usually are their
Tried 950 gr and ? worse then ? been loaded to 750 gr all ok, the problem was that he was 100 gr in ir? ...
also check the sensors-pressure gas to me on an audi to become crazy, changed the sensor, everything is ok