Okay, I do not get it. My 88 90q a/c blows strong and cold with one problem, It will not shut off!! The only way I can get rid of cold air is to turn the heat on, the switch seems to have no effect at all. The light in the switch works, so I know that it is contacting and releasing. I pulled the fuse designated for a/c and it still seemed to be on. I am very confused. harrison