AC is just blowing hot. I heard it go out when I turned the car on. When it went out it wasnt blowing at all. a few days later, it started blowing, but not cold air. Any ideas?

 

1) Check to see if compressor turns on with AC in high position
2) If compressor turns on or does not turn on, it may be low or out of coolant
3) If it turn on, you can feel the top line to see if its cool. If it is, then maybe an AC flap controller is malfunctioning
3) Climate control unit malfunction
4) cabin temp sensor not working
5) Relay or fuse blew
6) Also a good time to check you electric fans (one in cabin and the one stuck to front of radiator)