Last year the car started to blow the air a little warmer. I went to Walmart picked up one of those cans with the little gauges on it. The gauge said I was low so I filled it up. I had ice cold AC until this month. It started blowing hot again so I said I’ll just recharge it, the problem was when I bought the same can and put it on the gauge said that my system was overcharged. I went online and a lot of people were writing that you need a proper AC manifold gauges.
I got those today, plug them in and according to the paper it came with my system was low on refrigerant. I was about 30 PSI low side and high side was 200 PSI. The manual said for 83 deg. 40-50 on the low side and 175-200 on the high side.
Started to put the refrigerant out the low side started going down instead of up. So when I saw that I stopped filling it. I was at around 20 PSI on the low side and 210 on the high side. I revved the engine and then the low side went to 90 PSI and the high side came down to 125 PSI.
Any ideas what this could be?