The AC of my Maxima 2000 is cooling intermittently, sometimes it works from the first time I turn it on, others it takes more than 10 minutes to start cooling and some other times I have to turn it on and off several times in order to get it cooling. When it starts cooling it does it very well and it never stops until I turn it off and shut down the car. The fan works always fine.

I think that it may be an electronic issue but I don't really know where to look. Any idea of what may be happening? Thanks