slow_low_eddie

1991 Acura Integra b18a1

Guy at advance told me my car takes 34 ounces of freon. I have put two cans of 12 ounces each into my car already. AC works good and all. My question is, should I put just about one more can of freon to complete the 34 ounces and have my AC a bit colder? Or should I leave it alone? I just don't want to blow the compressor or overcharge it.

Thanks.

kaycee_00

If you overcharge it the pressure sensor should stop it from coming on. If you can live with how cold it is now I wouldn't bother trying to get it exact just put about 3/4 of a can in and you should be ok.

silvertaxasteg

I assume the system was converted from R-12 to R-134a, since you're able to get the freon locally without any issues. Or, if you're not the first owner, you're sure that there was no 'drop in replacement' for R-12.

Keep in mind, converted systems don't use the same amount of freon as stock systems. You really need a set of pressure gauges to judge how much freon you need.

Very good reading here.

slow_low_eddie

Damn! This is awesome! Car was converted to R-134a. AC is cool enough for now. I will be taking it to a buddy's shop. Thanks!

fcm

34oz is the R12 refrigerant charge, a retrofitted system will take between 80%-90% of R134a refrigerant, as mentioned a set of A/C gauges is needed to be right on the button, however if your getting below 45*F out of your vents, do not do anything, if you overcharge the vent temp. will actually go up along with head pressure and that can damage things. 94