I haven't drove my 93 SE since the beginning of the summer, today I started it up, and the AC wasn't work, all it does was blowing out warm air. I checked the pressure in the system, it came out to be around 20psi, is that normal?
I know my system is R134a, can I just recharge it myself, what pressure am I suppose to charge to?
Thanks in Advance

 

how did you test the a/c pressure?? sounds like you have a leak, I'd have it checked theres a pressure swithc on the compressor and if there isnt adequate pressure in the system the a/c will not operate.
Good luck

 

I took a R134a pressure gauge to the low side service valve.

Can I charge the AC through the low side like other R134 cars?
Thanks