Hello Everyone,

I am having issues with the A/C in my 95 SR.
For a while now my AC will work for a short while after I turned it on and then it wouldn't be cold anymore. Now when I turn it on I get no cold air. Went to autozone and the guy there told me to just add some refrigerant. I don't know much about AC but I thought you have to check the high and low pressure first. Is the autozone guy right? Can I just go ahead and add a can of refrigerant and see what happens or are there other steps I need to take first so I don't make my situation worse?
Hopefully its something simple to fix and not an electrical problem or something.
On a little side note, presuming if I have a leak, has anyone used the refrigerant with the sealant and did it work?

Hopefuly one of your knowledgeable minds can help me out.
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Thanks,
Mike