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Car is blowing hot air

Tiny
LEERICHTER
  • MEMBER
  • 2000 MERCURY SABLE
  • 200,000 MILES
I have a 2000 mercury Sable and it started to blow hot air I have opened the glove box and located the actuator and when the ac is turned on it seems to make noise what could it be
Saturday, July 28th, 2012 AT 1:15 PM

18 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
First, check the pressures of the ac system for operation then we can talk about mode doors.

Roy
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Saturday, July 28th, 2012 AT 1:26 PM
Tiny
LEERICHTER
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  • 10 POSTS
Ac system is fine 65/195
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Saturday, July 28th, 2012 AT 1:28 PM
Tiny
ASEMASTER6371
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Blend door motor is a common failure. Can you hear the door moving?

Roy
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Saturday, July 28th, 2012 AT 1:52 PM
Tiny
LEERICHTER
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No distinct sound just a kind of hum
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+2
Saturday, July 28th, 2012 AT 1:56 PM
Tiny
ASEMASTER6371
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Sounds like your issue.

Roy
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Saturday, July 28th, 2012 AT 2:00 PM
Tiny
LEERICHTER
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  • 10 POSTS
What is, and how do you fix it
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Saturday, July 28th, 2012 AT 2:06 PM
Tiny
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It is a blend door motr, available at a parts store and it is held by 3 smal bolts and an electrical connector. It is very tight to acess.

Roy
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Saturday, July 28th, 2012 AT 2:28 PM
Tiny
LEERICHTER
  • MEMBER
  • 10 POSTS
I got a new actuator and plugged it in and it does not work ether this car has a circuit board next to the actuator and the plugs are connected any idea as to why it is not working
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Saturday, July 28th, 2012 AT 4:40 PM
Tiny
LEERICHTER
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Fuse is good to
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Saturday, July 28th, 2012 AT 4:42 PM
Tiny
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You said it was humming?

Plugs? It has 1 connector.

Roy
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Saturday, July 28th, 2012 AT 4:44 PM
Tiny
LEERICHTER
  • MEMBER
  • 10 POSTS
Humming was something else door actuator will not move at all it is electric with a plug that plugs into the side of it
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Saturday, July 28th, 2012 AT 4:47 PM
Tiny
ASEMASTER6371
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The blend door is a small square box with 1 small connector and a round shaft the engages a shaft in the heater housing.

It is at the glove box to the left low on the housing.

Is this the same unit you got>>

Roy
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Saturday, July 28th, 2012 AT 4:51 PM
Tiny
LEERICHTER
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YES plugged a new one in and it will not move ether this is a computer controlled ac system
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Saturday, July 28th, 2012 AT 4:59 PM
Tiny
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Automatic climate conteol?

Roy
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Saturday, July 28th, 2012 AT 5:00 PM
Tiny
LEERICHTER
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Yes
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Saturday, July 28th, 2012 AT 5:08 PM
Tiny
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Different system that does not use that at all. Whatever you got is wrong as this box is for manual air systems

you need a shop with a scan tool that can monitor the actions of the programmer to determine the failure.

Sorry for the confusion. It is not a common option for this model

Roy
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Saturday, July 28th, 2012 AT 5:13 PM
Tiny
LEERICHTER
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I assume you have never dealt with this before
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Saturday, July 28th, 2012 AT 6:03 PM
Tiny
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Yes, I have but without a scan tool, everything is a guess. Auto systems are computer controlled and you need to see values that are available in a scan tool.

Roy
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Saturday, July 28th, 2012 AT 6:27 PM

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