Greetings! My name is Mark and I live in Tampa Bay Florida. I have just aquired a NB. This is my 1st VW. I grew up in a family of GM brand. I am a car nut. I have a collection of classics. I have always been my own mechanic. This NB air problem has me stumped. The fellow that I got her from had the Expansion valve, computer and both fans replaced, still no cold air. The compressor was not engaging, but after I bought her, I added 1 can of r-134. The second I hooked up the can, the compressor kicked on and the entire system seems to function fully, except, only hot air comes out still. Any suggestions?