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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
.