I bought my 2014 Sentra SR in 2019 and the first summer I had it, the A/C worked great and then kind of started slowly not working as well. Last summer, it basically stopped working and I have just been dealing with, but I'm needing to get this figured out. A friend of mine replaced the expansion valve and it worked for a few days, but is now not blowing cool air. Do I just bite the bullet and replace the compressor and condenser or should I try replacing the compressor control valve? Any guidance would be appreciated!