Question about 2000 Ford Taurus

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AC blowing warm air

I have a 2000 Taurus with EATC. The ubit started blowing warm air all the time. I was told the blend door actuator motor was probably bad. I changed the actuator assembly, the unit still blows warm air. looking at the control, the part that moves the door does not move at all.
Right now I think the door is half way, because the white rod with a square place in the back is straight. on the od one it is at a 45 degree angle. Please help.
Thank you, Frank Rhoney

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  • frankrhoney Oct 07, 2009

    I ran the diagnostic test and the only code that was diplayed was 051.

  • frankrhoney Oct 08, 2009

    Where is the thermostat located and is there a way to check it?




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In order to find the thermostat look at the top radiator hose follow it back toward the engine, you will a metal housing with about 2 or 3 bolts, unloose these bolts and replace the thermostat.
thanks,keep updated and please do rate the solution positively.

Posted on Oct 08, 2009

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Have you checked the "EATC Diagnostic Codes" yet? If not you should run the diagnostics's test.
To enter the self-test

  • Turn ignition switch to RUN position.
  • Push both OFF and FLOOR buttons simultaneously, then press AUTO within two seconds.
  • The test may run as long as 30 seconds while the display will show a dashed line in the center of the display window.
  • After about 20 seconds, a DTC will appear in the display.
  • Record all DTCs displayed.
If the EATC diagnostics show a code B1249 or codes 022, 024 or 025, it may be related to the secondary temperature blend door.

This is referred to as the "Climate Control Stratification Door".
This door also has issues with it distorting and binding.
This is also an issue Ford released a service bulletin about.


To replace this requires the removal of the "Instrument Panel" and the "Temperature Blend Door Actuator". The Stratification (Secondary) Temperature Blend Door is located inside the plenum and is attached to the main temperature blend door by an internal white nylon link.

Please remember that there are also other, simpler explanations for this problem. The primary one being a faulty thermostat. It is a good idea to check this before you do anything more costly.
I hope this helps.

Posted on Oct 07, 2009

  • david mcclellan
    david mcclellan Oct 07, 2009

    The EATC code 051 is for "solar radiation sensor open". Which really has nothing to do with the warm air issue.
    Just because that is the only code showing doesn't mean that a problem with the secondary temperature blend door doesn't exist.

    The exact TBM from Ford stats:

    "EATC System - EATC diagnostics may show
    a code B1249 or codes 022, 024 or 025. System defaults to full heat.
    System operates normally after running EATC on-demand self test, no
    concern found after performing appropriate Work Shop Manual Pin Point
    Test. Concern may repeat after two or more weeks."

    Also when I said that there were other,
    simpler explanations for this problem and pointed to the thermostat I was referring to the control unit not the engine thermostat.

    Are there any noises such as a popping or clicking sound? If so this would be a good indication to check the
    secondary temperature blend door.

  • david mcclellan
    david mcclellan Oct 16, 2009

    Sorry this took so long however this is the first opportunity to respond to your last comment/question regarding the thermostat.There really is no way to check it because it's part of the electronic system control. After doing so further research I have found that there would most likely be other problems related to the electronic control system beyond the problem you have.

    The only other item that could cause this issue is as I stated the secondary temperature blend door. The problem you face is there is no easy way to gain access to this blend door without removing the dash. I am sorry to say that I have never dealt with anything other then this that would be responsible for your problem. That is not to say however that there is nothing else that would do this. I really wish I could have been more help. If you haven't found a solution by know good luck. If I come across anything else I will pass it on. Please let me know if you have found another solution to this.



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