I have a 1989 mustang that i drive in phoenix, az where the temp right now is about 110-112. My car seems to get very hot very quickly when i drive. There is a sound coming from the thermosthat like water boiling. Its a new thermosthat. Its a new thermosthat and a new radiator. what can be the problem? what should i do? Should i run the can without a thermosthat at least for just the summer or no? What other problems can it be?