Hi. I've already bled the system many times, thermostat is working correctly and I even removed the heater valve and connected the hoses directly - still no heating. I was thinking maybe my heater core hoses are reversed, so can anyone tell me which hose is for inlet and outlet on the single zone (no climate control) heater core?
Have you tried blowing or flushing water through the heater core? It might just be plugged up.
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or your heater valve is bad...probably most likely. The hoses to the heater core are aluminum. Can't mess that up unless you you hooked up the rubber hoses to the heater valve the wrong way (probably unlikely).
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