ac question

[86subaru]

on my wife's 88 turbo full time 4wd a/t wagon, she says a white fog comes out the vents and then shortly after the ac will not blow cold air, twice now i have added , is there a easy fix ? it is r-134

[subyrally]

unless youve had it retrofitted, its an r-12 system. the white fog might be condensation, and the core might be freezing over preventing the cold air from blowing out. i think.next time it does that, check to see if there is reduced air flow or if yo can tell if the condensor core under the dash had frozen.

[86subaru]

yes it has been changed over from r-12 to r-134 , if it is freezing up then why after you let it set over night and turn on the ac it does not blow cold air?+ when i put a gauge on it ,it reads low