my car temperature

Hello, how do I write to see if you can help me I have a 92 carolla toyota when I am at the normal temperature rises to half turns on the electro and begins to lower everything normal sometimes it goes down more than normal because it takes away the basement the problem begins when I turn on the air conditioning begins to rise the temperature it reaches half Super hot engine and now when I grab a long climb up more than half I turn off the air and start down