There could be an air pocket in the system, a clogged heatercore a failed heater control valve(if equipped) or a failed directional valve actuator.
once the engine is at operating temperature feel both heater hoses to see if they are warm, if they are then your coolant system is working fine and you will need to look into the dash flow controls such as the blend door actuator(hot/cold door)
There could be an air pocket in the system, a clogged heatercore a failed heater control valve(if equipped) or a failed directional valve actuator.
once the engine is at operating temperature feel both heater hoses to see if they are warm, if they are then your coolant system is working fine and you will need to look into the dash flow controls such as the blend door actuator(hot/cold door)
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