It's not that I can't shift into 3rd at all, I just can't downshift into 3rd

. So no highway races for me for a while...ha haha. I'll drive around a little more and see if I can get past the problem without having to never downshift into 3rd. Does anyone know what could cause my car to be overheating? I just changed the thermostat and it's still past the the halfway mark.