AC Help
 

Hello I recently purchased a 1992 RX7 Twin turbo my ac basically does whatever it wants it will turn on and it will not turn off it will also not change fan controls, when i turn the dial. Just wondering if any body knew what it might be. Also im trying to find out what kind of air filter the previous owner had put on this car here is a picture of my engine any help would be appreciated.

http://imageshack.us/photo/my-images/685/rx7engine.jpg/

I don't see a pic? Welcome to the forum btw!