Question about 1997 Ford Explorer AWD

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1997 ford explorer blend door

1997 ford explorer with automatic temp control, I've replaced the blend door actuator but a few minutes after turning the a/c or heat on air will stop coming out the vents. The blower can still be heard working. The automatic control module under the radio was also replaced.

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  • tmn1220 May 31, 2009

    I've performed the system test, no error codes were found. No air comes out of the defroster unless I select that mode.


  • gerry bissi May 11, 2010

    is the air comin gout the defroster vents?

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You may have a vacuum leak in the engine compartment. There is a vacuum hose going from the engine intake manifold though the firewall to the a/c controls. Also in the engine compartment, is a vacuum storage reservoir, a plastic ball, that stores vacuum for the a/c system. Check them first.

here's a test procedure too.

    1. If the concern is not visually evident, perform the system self-test using the following procedures:
    2. The self-test can be initiated at any time with any resulting trouble codes. Normal operation of the system stops when the self-test is activated.
    • Ensure that the engine is warm (at least 49°C [120°F]) prior to performing the self-test. To enter the self-test, simultaneously press and release the OFF and FLOOR buttons, followed by the AUTOMATIC button within two seconds. The test may run as long as 20 seconds, during which time the display will show a tracer segment moving in a counterclockwise direction in the center of the display window. If the tracer is present for more than 20 seconds, go to the Symptom Chart.
    • When the self-test is complete, diagnostic trouble codes will be displayed in the vacuum fluorescent display ( VFD) window. If there are no DTCs, all of the display segments will illuminate.
    • To exit the self-test and restart the system, press the blue button.
    • To clear the DTCs press the DEF button.
    • The self-test should be deactivated before the EATC system is shut off.
    • Refer to the DTC Reference Chart for an explanation of DTCs.
  • -----------------------
    NOTE: To prevent a situation where defrost cannot be obtained, the air handling system is designed to provide defrost when no vacuum is applied to any of the three vacuum control motors. Instead, a leak in the vacuum control circuit will send all air flow to the defroster outlets. This condition may occur during acceleration (slow leak), may exist at all times (large leak), or may exist only when specific functions are selected, indicating a leak in that portion of the circuit.
    The vacuum hoses used in the passenger compartment control circuit are constructed from PVC plastic material. The vacuum hoses used in the engine compartment are constructed of Hytrel. Because of the materials used, the vacuum hoses should never be pinched off during diagnosis to locate a leak. Use a vacuum pump to locate vacuum leaks.
    ---------------------------------------------------------

    Posted on May 31, 2009

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    Hello, this is Brent at 1 Factory Radio. The best solution for display lights going out in Ford Explorers is to get a new DC to DC Converter, because this part was usually responsible for display malfunctions due to its own inherent deisgn flaws. We offer our own brand of DC to DC Converter for Ford Explorers and many other Ford vehicles from the late 90's to the early 2000's. Pioneer no longer makes these parts, but ours are 40% less expensive than the ones that Pioneer was selling. These are high-quality, newly manufactured pieces which have been specifically engineered to correct the design flaws which caused the originals to malfunction prematurely, and they come with a full-color instruction manual for easy installation. You can purchase them from our eBay site, http://stores.ebay.com/1factoryradio, and also on the 1 Factory Radio website, www.1factoryradio.com.

    Posted on Jul 18, 2013

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    SOURCE: 1997 explorer a/c blend door ?

    may possibly have a vacuum leak.

    Posted on Apr 07, 2010

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    The duct is under the the dash on the drivers side. And you will have to cut open the duct to install the replacement door.

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    Clicking sound is your blend door actuator stripping it's gears and failing to open the door that directs the blower air through the heater core. Follow the sound to the actuator and remove it. Install a new one. You may have to remove some panels to get to it. The part is shown below and costs $32 at autozone. Please let me know if you have questions.

    jturcotte_42.jpg

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    sounds like a blend door concern

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    inside the blend door is a potentiometer
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    HOT AIR ALWAYS


    this problem is almost always caused by the air temperature control blend door being warped and stuck or by the electric actuator that moves it, the common issue is the blend door actuator. To replace or repair this part requires the removal of the entire dash assembly.

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