Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84 exptools; site ihu1g.UUCP Path: utzoo!decvax!mcnc!akgua!whuxlm!whuxl!houxm!ihnp4!ihu1g!rls From: rls@ihu1g.UUCP (r.l. schieve) Newsgroups: net.auto Subject: Re: Problem with heater/defroster... Message-ID: <682@ihu1g.UUCP> Date: Thu, 22-Aug-85 16:27:11 EDT Article-I.D.: ihu1g.682 Posted: Thu Aug 22 16:27:11 1985 Date-Received: Sun, 25-Aug-85 03:42:53 EDT References: <494@busch.UUCP> Distribution: na Organization: AT&T Bell Laboratories Lines: 44 > > > I just purchased a 1974 Mercury Comet from my brother to get me to work > and back. It runs great and has only 39,000 miles. The problem I have > got is with the defroster/ac/heater. For some reason whenever you have > the temp indicator on "heat" steam comes out of the uppper vents and fogs > up the windows. When you turn on the defroster it gets worse - so bad > you can't even see out of the window to drive. This morning I turned the > temp indicator to "cool" and it seemed to slow down the steam coming out > of the vents. What gives ??? Any help would be appreciated. Also, the > passenger side floor board is wet quite a bit of the time. I can't tell > if this directly related to the heater/defroster problem or not. > > Thanks in advance, > > Joe Guilliams > ..!ihnp4!we53!busch!djg > The Anheuser-Busch Companies; St. Louis, Mo. > -- Sorry for posting to the whole net but a direct response did not get there. I have another suggestion as to what your problem may be before you take apart your heater core. I don't know why I didn't think of it yesterday, but a common problem with cars that have air conditioning is that the water drain for the cooling core gets plugged. As I said yesterday the AC also does some dehumidifying. The water that it pulls out of the air is dumped out of the bottom of the fiberglass shroud that covers the cooling core at the firewall of the car. You may have noticed a puddle of water under a car with the AC running that has been sitting in one place for awhile. The drain itself is often a small rubber tube out the bottom of the fiberglass cover for the AC stuff at the firewall. If this gets plugged you may experience the same problems with your windshield fogging. See if the drain is open before you dig into your heater core. Good Luck Rick Schieve ...ihnp4!ihu1g!rls