Hello. I'm literally in a fog. Steam/vapor pours into the car when the heat is turned on...ever since the alt belt broke and I replaced it, after a brief period of the car running too hot (less than a mile). No sign of leakage under hood. Any guidance on getting to the heater from the interior would be appreciated ... I'm assuming I've got a leak there. Further thoughts on what I do once I get there would also be welcome. Thank you.