'm trying to fix the heat in my sister's Camry. I've checked the obvious things, like the antifreeze. The heater core's intake and outlet tubs are both hot, so I don't think it is the heater core. We can change between the different vent outlets without problem. It just blows cold air. I'm leaning towards the Blend Door Actuator, but I was hoping for a 2nd option before I pull it. The odd thing about that is when you change from heat to AC, I'm pretty sure I can hear it moving. I guess it could be a stripped gear though. I would appreciate any thoughts you have.

 

Could be the blend door actuator.

See related topics below.

 

Thanks, that is the way I'm leaning too. I guess I'll need to tear it down to see.