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Old 04-16-2008, 08:42 AM   #1
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Default Always blowing heat

My 96 SSEi has the auto climate control. When you shut it off, the fan shuts off, but it still throws heat at the floor. Getting warm out now, don't need any more heat! Any directions you can point me in?
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Old 04-16-2008, 09:29 AM   #2
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Sounds like your airmix actuator took a dive. Not an easy fix unless you are a contortionist. I have a working one I can snag out of my parts car if someone can verify that 1993 is the same as the 1996...which I think it is.
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Old 04-16-2008, 09:42 AM   #3
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Until you have the time to replace the actuator, you can do a redneck fix. Remove the glovebox, and working through a hole in a dash support, pop the lever out of the motor, hook up a wire and manually control the door in front of the heater core. willwren'* redneck airmix door fix
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Old 04-16-2008, 10:31 PM   #4
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I assume when you shut the heat off, it shuts a door so there is no more airflow? I actually need to remove the dash and replace it with the one I took out of my crashed Bonny, so getting at it is no problem. I also need an airbag control unit, is a 93 the same as my 96?
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Old 04-16-2008, 11:05 PM   #5
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i doubt it since one is OBD-1 and the other is OBD-II.

the airmix actuator is a door that controls the mix between hot and cold air.
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Old 04-17-2008, 07:48 AM   #6
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Is it the actuator that also shuts the door to stop airflow? The problem is the air won't stop flowing out the heat ducts when you shut it off.
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Old 04-17-2008, 08:20 AM   #7
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So the blower stays on after you shut the car off? If this is the case, then it is the blower control module that has gone bad.
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Old 04-17-2008, 10:23 AM   #8
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Default Re: Always blowing heat

Quote:
Originally Posted by smallengineguy
My 96 SSEi has the auto climate control. When you shut it off, the fan shuts off, but it still throws heat at the floor.
Had to go back to the first post, I think he means turning off HVAC (probably when moving) heat still vents out at the floor just from force of outside air.
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Old 04-17-2008, 10:49 AM   #9
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Quote:
Originally Posted by smallengineguy
Is it the actuator that also shuts the door to stop airflow? The problem is the air won't stop flowing out the heat ducts when you shut it off.
No, the actuator only regulates temperature by controlling the volume of air that flows through the always hot heater core. The flap controlled by the air mix actuator is called the A/C temperature valve in the diagram below.

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Old 04-17-2008, 12:05 PM   #10
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The system is designed to ALWAYS allow a small amount of outside/fresh airflow at the floor vents even when it is "OFF". So, my first question to you is, do you get cold and hot air when the system is "ON" and you change the temperature? If the answer is yes, try lowering the temperature setting before you turn it "OFF" and see if that works. If you have hot only, no matter what temperature you set, then, like the others have mentioned, I would suspect that your airmix actuator is broken.
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