What are the pressures just before the A/C begins to blow warm? The compressor will be disabled if the pressure reaches 425-450 PSI.
I wonder if the system is over charged, you are seeing 350 psi with an ambient temp of only 85 degrees? That is the pressure I see on a 110 degree day.
Yeah I think I’m in agreement and at the point of taking it to the shop. It was enjoyable to at least learn a few things in my research. Thanks for the help and guidance. Much appreciated!
It’s illegal to knowingly vent refrigerant into the atmosphere. If you don’t have a Robinair (or other) refrigerant recovery equipment, go to a shop.
As for your problem (low low-side and high high-side pressures), it points to an expansion valve.
I had a similar problem in an older Toyota (I was actually showing a vacuum on the low side)
Also, it goes without saying to replace the receiver/drier or accumulator anytime you open up the system.
Took the car in yesterday to have it inspected. They believe air was in the system so they did an evac and replace the Freon. Seems to be blowing freezing air. Shall see and hope it holds up