Hi I have a 91 honda civic 4doors, I paid a mechanic to change out a leaking radiator. Radiator is now fixed, but my ac did not cool. I asked him and he said that the ac freon was empty. My ac was working and cooling very good before he changed out the radiator. I also had r12freon. He changed it over to r134a. It worked for a week cooling but not as cool as before with r12, but no problem. Now the ac is not cooling again. Is this a leak or has my freon clogged up? Or what is going on I can't handle not having ac with a baby.. please someone help me out or advise me what to do. I don't have a lot of money to take it to a shop... :(