1998 Ford Taurus blenddoor actuation

1998 FORD TAURUS
174,732 MILES • 6 CYL • FWD • AUTOMATIC
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BAMAWOLF2004
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  • 1 POST
Happy Thanksgiving!
Thank you for taking the time to answer my question. Any help is greatly appreciated.
After my car warms up to operating temperature I can turn on the positioning switch and receive warm air for about 30 seconds then it goes cold. If I wait about three minutes I can reactivate it and get warm air again. I have replaced the thermostat and have pressurized the heater core (which is unplugged and does not leak) and I have also pulled my glove box out and physically listened to the blenddoor actuating. My question is does the blenddoor have a vacuum assist that holds it open after initial electronic activation and if so where is it located and how do I check it.
Nov 27, 2008 at 1:08 PM
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BLUELIGHTNIN6
  • CERTIFIED EXPERT
  • 16,542 POSTS
Hello and thanks for the donation. Yes, the blend door actuator is vacuum assisted. Below is the vacuum diagram for your electronic blend door actuator.


https://www.2carpros.com/forum/automotive_pictures/261618_Graphic_1.jpg

Check all hoses for leaks/broken or loose fittings.
Nov 27, 2008 at 11:38 PM