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heater won’t turn off

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=46446
Printed Date: May 15, 2024 at 1:50 PM


Topic: heater won’t turn off

Posted By: 94linc
Subject: heater won’t turn off
Date Posted: December 31, 2004 at 12:27 AM

I just got registered and have looked around the site a bit, enough to think I'm really not at the right place for what I need.  But I'm in this deep so I'm gonna go ahead and ask my question anyway.  My problem is in the ballpark at least.  I have a 1994 Lincoln Town Car and yesterday the heater fan decided it would not turn off.  No matter what I do.  The led indications work normally as far as increasing and decreasing the temp and changing from floor to ac to defrost or vent whatever.  And when I push the OFF button, it says OFF, but the fan is still blowing away. I'm thinking maybe there's a set of relay contacts stuck together somewhere or the output logic that controls that relay is stuck in the on state.  But I don't know where anything is physically on this car nor do I have a schematic -- so I could use some help.   I sure would appreciate any advice/suggestions or comments anybody might have. Thanks! 




Replies:

Posted By: hayman
Date Posted: December 31, 2004 at 1:39 AM

I would get a service manual of some sort for it with wiring diagrams!




Posted By: Falcon 1
Date Posted: December 31, 2004 at 8:35 AM
I would remove your heater controls and take a look at the back of them. I have replaced a couple of controls on Ford products. If you look at the back of the controls sometimes you will notice the contacts have actually melted because of heat.

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Do it right the first time, only a doctor can bury his mistakes.


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