My ac doesnt work but the heat wont work that well either the heat will work on the lowest setting for the fan and it will only come out of the top by the windshield and the floor but that is it the AC came on for a second when the fan was set on low. But i dont know if it is the regulator or the blower motors i know it has two one for the heat and for the ac right. I have hooked up to it to check compression and everything was fine does anyone have some suggestions or has anyone had this problem before? Thanks in advance.