I have a 2012 GTR and the AC started blowing warm air. I had the system recharged, and that seemed to help a little, but it still would run cold and then warm.
I found out one of the previous tuners (either SP Engineering or Doug Ross) had put too much oil in the system and tool much coolant as well.
My current shop thought this may have caused an issue with the AC compressor. So I changed that out, but I'm still having the same issue. It will blow cold and then it will blow warm. Sometimes on start up it blows warm, and after I stop and restart the car, it will blow cold. Other times it blows cold as soon as I start to drive it.
Any thoughts on what might be causing this?