Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: Notesfiles $Revision: 1.7.0.8 $; site convex Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!ihnp4!inuxc!pur-ee!uiucdcs!convex!tmorris From: tmorris@convex.UUCP Newsgroups: net.auto Subject: Re: Problem with heater/defroster... Message-ID: <82600005@convex> Date: Thu, 22-Aug-85 13:28:00 EDT Article-I.D.: convex.82600005 Posted: Thu Aug 22 13:28:00 1985 Date-Received: Sun, 25-Aug-85 05:44:03 EDT References: <494@busch.UUCP> Lines: 27 Nf-ID: #R:busch.UUCP:-49400:convex:82600005:000:1413 Nf-From: convex.UUCP!tmorris Aug 22 12:28:00 1985 Hi guy ! What you have is a classic case of LEAKING HEATER CORE , a dread and difficult to cure disease. Your heater core is a miniature radiator located , as I near as I remember on mavericks and comets, under the dash on the passenger side . When the temperature is turned to hot , water fron the cooling system (approx. 180 degrees ) circulates thru this little guy to dump heat into the passenger compartment. As you select defrost or heat , a system of cables and doors directs the flow of heated air to the desired location. Your problem is that the built-up acids in the ole cooling systems have eaten the aluminum walls of this core for lunch ! Since it lives on the passenger side , that floor will get wet. When you fan-force air thru the core when 180 degree water is circulating thru the pipes , you get lots of steam. Check your radiator for lost coolant (it probably won't be much --- alittle goes a long way when making steam ). I have seen these get so bad that there was 2" of coolant on the passenger side floor ! I've fixed a couple by adding stop-leak to the cooling system , but don't recommend it as a permanent repair. Go ahead and replace the heater core , and put some new hoses on it while you're there. You mat get lucky and find a leaking hose instead , but if you do , hop in the car and drive to Vegas immediately ,for you are a lucky man indeed ! Ex-mech-now-a-tech .