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Re: the heater control knob will not work need to
Disconnect the Neg battery terminal, however, make sure you have the reactivation code for the radio if you still have the original factory car stereo, this is important, if you do not have the code, the radio will be inoperative. carefully remove the defrost button from the panel face,disconnect the connector in the rear of the switch. remove the blower and temp controls by carefully prying them out, a small flat blade screwdriver works great. there should be 6 screws on the panel, once removed, pull the panel out far enough to remove/ disconnect the two wire connectors behind the assembly. once this is done, there are 5 screws on the back, remove and separate the heater/ac control assembly, replace and re-install as you have taken apart. this is how you would remove the assembly. i hope this solve your question.
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What year is your vehicle? It could be a control cluster, or "brain" as it is often called, which is directly behind the AC?Heater control knob. This would require removing much of your dashboard which is NOT a enjoyable experience! Peace. God bless.
Hi Sharon, I'm glad to help. Your 2000 year doesn't have a motor for the temp door. It operated by a cable running from the control head to the temp door and you work it manually. If you can't control the temperature from hot to cold, sometimes the cable come off or breaks. Here how you can see the cable to see if its working. Remove the radio and right behind it you will see the cable attached to the door, while watching it move the temp lever from hot to cold and watch it. If it is moving then its most likely out of ajustment. If it is not moving, then you'll need a new cable. Just in case it is moving, I'm attaching the instruction on how to adjust it below. Hope this helps and have an awesome day Sharon!
TEMPERATURE CONTROL CABLE
Any time the heater-A/C control or the temperature control cable are removed and/or replaced, the following procedure must be performed.
The temperature control cable housing and core must be installed at both the heater-A/C control and the heater-A/C housing ends, and the heater-A/C control must be installed in the instrument panel. See Heater-A/C Control and Temperature Control Cable in the Removal and Installation section of this group for the procedures.
Rotate the temperature control knob on the heater-A/C control so that the knob pointer is in the 12 o'clock position.
Pull the temperature control knob straight out from the heater-A/C control base until the perimeter of the knob (not the knob pointer) protrudes about 6 millimeters (0.25 inch) from the face of the control base.
Rotate the temperature control knob to the 1 o'clock position. Push in on the knob slightly and continue rotating the knob to its full clockwise stop. The knob pointer should be aimed at a position about 8 millimeters (0.315 inch) beyond the end of the graduated red strobe temperature control graphic on the face of the heater-A/C control base. If the knob is not pointed to the correct position, go back to Step 2 and repeat the adjustment procedure.
Rotate the temperature control knob counterclockwise until the knob pointer is in the 12 o'clock position again.
Push the temperature control knob straight in towards the heater-A/C control base until the perimeter of the knob (not the knob pointer) is flush with the face of the heater-A/C control base.
Rotate the knob to its full clockwise stop again. The knob pointer should be aimed at the end of the graduated red strobe temperature control graphic on the face of the heater-A/C control base. If OK, go to Step 8. If not OK, go back to Step 2.
Rotate the knob to its full counterclockwise stop and release the knob. If the knob springs back from the counterclockwise stop, the self-adjuster clip that secures the temperature control cable to the blend-air door lever is improperly installed. See Temperature Control Cable in the Removal and Installation section of this group for the procedures. If the knob does not spring back, the temperature control cable adjustment is complete.
This noise is the air temperature control blend door actuator motor, it has stripped the little plastic reduction drive gears, this is a common problem on Explorer and the Expedition, in order to change this motor u must remove the dash assembly, the blend door motor is in the approx center of the air distribution plenum between the heater core and the AC evaporator core.
pull the knobs off of the switch, start in the lower right hand corner and gently pry with a screwdriver the control faceplate. as it lifts work it to the left and lift. the a/c button goes hrough this plate and will start coming out as the plate lifts, just pull it straight out. perform a similar operation on the clear plastic that is under the face. the bulb is right there and is just pulled right out. you may have to carefully remove the green cover on the bulb to transfer to the new one
Check the heater control valve, when u switch to heating mode, this valve is supposed to open, allowing hot engine coolant into the heater core under the dash, it is not opening the valve, the clicking is the sound from it attempting to open the valve.