66 Belvedere II... no heat

Heating, Cooling & AC

  1. John Burns

    John Burns Member

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    This Bell had factory AC and it has been largely removed - no evidence of it in the engine compartment at least. It still has the ac box under the dash and I know 2 of the actuators don't work. Has anyone ever manually forced the actuators open (or closed) so it will provide heat? I understand there is a bypass valve on the heater core, but I can't really see it. I'm assuming one of these actuators will open that.

    Any thoughts would be appreciated!
    Thanks!
     
  2. PurpleBeeper

    PurpleBeeper Well-Known Member

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    I'm not sure if this applies, but when I first got my '70 the heater control didn't work (broken cable?). I used to just flip a lever over the air box near the passenger seat. You can reach it with your hand and it worked...."hope" this helps.
     
  3. John Burns

    John Burns Member

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    Thanks! I was able to do that to at least keep the cold fresh air from coming in. But on the other side of the fan, I think there is a door that is closed preventing the fan from blowing through the heater core. And I believe whichever actuator does that must also open the heater core bypass valve. I need to see one of these pulled apart to understand what is happening. There seems to be many different heater / ac boxes for the different models of B-Bodies!

    I can't find any photos of a Belvedere II box. Maybe someone has restored one that has photos?
     
  4. John Burns

    John Burns Member

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    I might have figured this out: pages 24-2 to 24-4 of the 1966 Plymouth Service Manual!
     
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