This heat is unbearable and my car AC is driving me crazy. It blows ice cold when I am driving on the highway, but the second I stop at a traffic signal, it starts pushing out warm, humid air. As soon as I start moving again, it goes back to cold. I was worried it was something expensive like the compressor failing. I found a really helpful explanation of why this happens specifically in our climate, it talks about things like the cooling fan or a dirty condenser being the culprit. You can read more here if you are having the same issue, it breaks down all the common reasons from low refrigerant to sensor problems. Before I take it to a shop, has anyone else dealt with this and found a simple fix that worked?