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Pretty sure I don't have HVAC, how could I know if I do? I was going by the heat control valve that has just the inlet and outlet. Haven't changed the thermostat housing but I have changed the thermostat twice, heat control valve, blend door actuator, radiator, and flushed the core twice. I got...

I filled it with 50/50 coolant using the hose attached to the outlet side after the flush to remove the water and get coolant back in the heater core. I followed the heater core lines through the firewall, heater core is where I said it is. I have tried all the cheap fixes which included burping...

I am having the same heating issue on my 2007 explorer and I've done pretty much everything you have. Any new updates?

Radiator is full, heater core is just in front of the shifter column in the floor. Filled the core with the proper fluid after the flush.

I have a 2007 Explorer and I suspect that the heater core is partially clogged. Replaced everything else but the heater core so I’m guessing that’s why I’m not getting any heat. I did flush it and water seemed to flow just fine, only getting warm air and at times a little warmer when idled high...