What is your question?
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What is your question?
Blows cold air when heat on. Replaced heater core. Replaced thermostat, had 2 flushes. All blender doors work. Heat Worked for about 6 months, after replacing these things..now back to blowing cold air?
1 Reply
It's back to basics. Engine temperature? Inlet and outlet heater core hose temperatures? Verifying blend doors are turning? Ensuring no air pockets in the cooling system? There isn't anything exceptionally complicated; it just takes methodical hands on inspection.