Heater Core on 89 Town Car with Automatic Temperature Control

#11

Chris Nagorka wrote:

Quote:

Hello All:

1. Yes, the ATC sensor was brand new from the the L-M dealer. It made no
difference, once it cools down it doesn't warm back up. Here's the acid
test: on an incredibly cold day, let the ATC start to cool down the
output air, then open the passenger side door and leave it open. The
sensor inlet is right by the glove box door; one would think freezing
cold air going into it would make it warm the heater back up, but it
doesn't.

2. I didn't see that the metal brace on the bottom of the dash came off;
it disappeared behind the radio, etc.

3. I thought about the cable idea to make it manual but just never got
to the point of doing it. I figured it would be tricky to work out the
geometry so the temp control slide moved (reasonably) its full amount to
work the temp blend door. But, since a newer one won't work (I didn't
know it was an electric motor) I'll go back to the drawing board. BTW,
is the same plenum used in Crown Vics and Marquis of the era? If so, a
salvaged cable assembly might be the way to go.

Chris

Hey Chris,

The Lincoln ATC systen is really pretty simple. If you want to try to fix it, Check
out the Tech articles at www.lincolnsonline.com . There's a good rundown of the ATC
self-test and code descriptions. Also, post your problem on the Forum. You will get
some good input, there's a pretty good bunch of guys over there.
The way you describe it I would suspect the ATC controller. A problem with the blend
door actuator will "usually" cause something like only cold or only hot air, or only
somewhere in between. It will usually set a code in the controller (A hard fault will
cause flashing lights on the display). Much easier to fix it right than to modify the
system.
Tom

#12

Hello:

Remember that in 1982, the ATC system was totally vacuum/mechanical-
there wasn't anything electronic in it. I had a '94 Town Car with ATC,
and it worked much better. If you turned the temperature on the digital
display up or down all the way, it locked out, so to speak, so you could
manually override the system.
Thanks for the tips, though- I'll go over there and take a look at the
postings.

Chris

#13

Chris Nagorka wrote:

Quote:

Hello:

Remember that in 1982, the ATC system was totally vacuum/mechanical-
there wasn't anything electronic in it. I had a '94 Town Car with ATC,
and it worked much better. If you turned the temperature on the digital
display up or down all the way, it locked out, so to speak, so you could
manually override the system.
Thanks for the tips, though- I'll go over there and take a look at the
postings.

Chris

Oh Yea, I remember that system. I had forgotten about that one. I thought it was like

the system in my 84 MK VII. Darn, now I've got to research the details of this system
to satisfy my curiousity.
Hope to see you on LOL.
Tom

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Heater Core on 89 Town Car with Automatic Temperature Control

Ford Vehicles Discussions About Ford Cars (alt.autos.ford)

Re: Heater Core on 89 Town Car with Automatic Temperature Control - 02-12-2005 , 10:57 AM

Attn Tom A.:Heater Core on 89 Town Car with Automatic Temperature C - 02-12-2005 , 02:30 PM

Re: Attn Tom A.:Heater Core on 89 Town Car with Automatic TemperatureC - 02-12-2005 , 03:52 PM