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Replace a/c heater blend door actuator relay - 2006 Chrysler 300

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4 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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jturcotte
  • 8841 Answers

SOURCE: location of blend door or

The temperature door actuator is located at the bottom of the heater housing at the center terminal. It looks like this:

6b48b5c.gif
To remove the actuator

  1. Remove the left and right underpanel silencer ducts.
  2. Remove the two retaining screws from the actuator which are accessible from the right side of the center stack.
  3. Remove the screw from the actuator on the left side.
  4. Pull the actuator straight down from the shaft and disconnect the electrical wire. Upon removal, matchmark the shaft position of the actuator, because the shaft on this motor is keyed.

Posted on Oct 03, 2010

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jturcotte
  • 8841 Answers

SOURCE: blend door motor stuck on

There is not a relay, per se, but there is the body control module (BCM). It seems to me the feedback circuit is not working. I have pasted the wiring diagram below--one if you have manual control and one if you have automatic (where you can specify temp). In either case, the feedback wire is red with a white stripe. If you are up for some troubleshooting, check the voltage on that wire by back-probing the connector. I believe that wire is at the end of a potentiometer that changes with the actuator position. The BCM supplies a 5 volt reference to the potentiometer, and you should see that 5 volts when the actuator is at one end of it's range. The voltage should be somewhat linearly lower as the actuator rotates away from the stop. If you are not seeing that kind of signal on that wire, I would replace the actuator. Otherwise, the problem could be in the BCM, but I doubt it. Let me know if you have questions, but it's hard to figure these new systems out when the BCM is like a black box and the actuator is too--I have no idea how it's wired.

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Posted on Dec 11, 2010

chargerhp
  • 814 Answers

SOURCE: what blend door actuator controls what area

The driver and passenger area separately and must be recalibrate after installing and both are reversible same motor12_20_2011_6_26_43_pm.gif

Posted on Dec 20, 2011

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My 2004 Avalanche ' heating system will not heat. No matter what the setting it either blows no air or cold air and it is 25 degrees outside so this is a problem. The engine is up to temp and I have tried...


The most likely cause is a failed blend door actuator; however I recommend a little troubleshooting. First, can you hear a clicking sound behind the dash when you turn the setting to hot? If yes, it is certainly the actuator stripping its gears. If not, check to make sure the heater hoses are both hot as they connect to the heater core at the firewall (in the engine compartment). If one or both of the hoses do not get hot, there is a blockage caused either by an air bubble or a stuck water control valve in the heater hose. If the hoses are both hot, the indication is again the blend door actuator.

Below are instructions for replacing the actuator. Look at the diagrams carefully--the big arrows point to the front of the truck and the actuator is on the side of the heater box above the outlet duct that runs to the driver's side of the floor. Also, the actuator is expensive, so I recommend you make sure it's bad and shop around a bit to get a good price. To check out the actuator, first see if you can turn the blend door by hand. If you can't turn it, maybe it's jammed. Also, reconnect the actuator after removing it and see what it does when you turn the heater to hot.

Removal & Installation
  1. Remove the floor air outlet duct extension (1) from the floor duct (2).

    jturcotte_393.gif

Fig. Remove the floor air outlet duct extension (1) from the floor duct (2)


Disconnect the electrical connection at the blend door actuator (#10 in pic below). jturcotte_394.gif

Fig. Blend door actuator and related components


Remove the blend door actuator mounting screws from the HVAC module.


Remove the blend door actuator as an assembly with the actuator cam.
jturcotte_396.gif

Fig. Remove the blend door actuator mounting screws from the HVAC module



To install:

  1. Install the blend door actuator as an assembly with the actuator cam.
    1. Line up the heater/defroster valve lever with the blend door actuator cam slot.
    2. Line up the A/C valve lever with the blend door actuator cam

  2. Install the blend door actuator mounting screw to the HVAC module.
    1. Tighten the blend door actuator mounting screw to 14 inch lbs. (1.6 Nm).

  3. Connect the electrical connection at the blend door actuator (10).
  4. Install the floor air outlet duct extension (1) to the floor air duct (2).


Picture of actuator:


jturcotte_57.jpg

Dec 07, 2010 | 2004 Chevrolet Avalanche

2 Answers

Blend door for front temp control is stuck in the 'cold' position this winter. Is there a way to manually move and fix the door to get some heat?


you have to replace the blend (heat/cold) door motor, you can try to remove motor and turn door and try to jam something in door handle slot ,that the part that the motor turns,hope this helps.

Dec 26, 2009 | 2001 Ford Windstar

2 Answers

2003 mercury grand marquis LS heater does notr blow hot air, blower blows but cold air comes what is the problem


The blend door is stuck in cold position. That usually happens because the blend door actuator has failed.

You will need to test and replace the blend door actuator.

To replace the actuator you will need to take apart the dash and remove completely the instrument panel,d isconnect the connector, remove the four screws, remove the temperature blend door actuator and replace it.

The replacement is not a job for beginners, since you have to take apart the dash to access the actuator.

Regards.


Nov 18, 2009 | Mercury Grand Marquis Cars & Trucks

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