Hats off to you sir, this is some serious work!
By the way - does the cool air start to blow instantly after you turn on the AC, even in very hot conditions?
My AC sometimes takes literally 5 minutes to start blowing cold air, espacially when the outside is awfully hot and the car sat overnight on the parking lot.
I asked the dealership to check - they added little bit of refrigerant and measured the pressures - all was OK and they were not able to find a problem. They changed the pressure switch "for preventive purposes" but no help. Could it be that the whole AC system is just worn out after 15 years of service?
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