Help wanted with broken ac

Best to vacuum the system down for an hour with a vacuum pump, that boils any moisture out of the system and removes it.

Then refill the system with the proper type of freon for your system. Lots of them have been converted to 134 freon. Can tell by the additional fittings at the fill ports.

Look in a manual and see how many oz. of freon it is supposed to take. Fill on the low pressure side only, with the car running, full on AC controls, and doors snd Windows closed. Fan on high.

Put a thermometer in the AC vent and see if you can get it to cool down to 50° degrees.

Remember these are older systems are less efficient than the new cars, so be a little patient.