203k miles. Ok so I bought the car 2 years ago and the ac never worked. I discovered it was because there was no refrigerant in the system.
So 3-4 weeks ago I pulled a vac for an hour and held it for an hour and it didn't drop. At that point I recharged the system with 32 ounces. I used a 20 oz can of ac pro and 12 oz can that had uv dye in it. The compressor kicked on and all vents blew cold. I did notice the ac clutch makes a scraping noise for a few seconds after the compressor is turned off and I was told this is due to the springs getting worn out causing the air gap to be smaller and grinding against the pulley.
I drove 30 miles yesterday in 97 degree weather and the ac almost froze me out of the car, and then 3/4 way home the drivers side vents started blowing less cooler than the passenger side. Today it's still doing the same thing.
What should I do next? Get a uv light and start checking for leaks? The compressor has an oily gritty black dirt film on the entire body, but it's not wet anywhere and it's not wet underneath the compressor. The 2 hoses running off the compressor also have this black gritty dirt film but it's not wet. The rest of the lines on the ac system appear to be clean.