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If the heater is not putting out heat could it be the thermostat?
Wiki User
∙ 14y ago
If you are not getting heat out of the heater, there are only a few things that could be wrong. The first is low coolant. You can't get heat without coolant running through the heater. If it is low, sometimes it has to be bled of air bubbles. If both heater hose running to the heater are hot, you have circulation. If not the heater could be plugged or not getting the coolant to circulate. There is also a damper in the heater system to stop cold air from bypassing the heater and that needs to be checked.
Wiki User
∙ 14y ago
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It is possible the thermostat has stuck in the open position therefor not letting the engine heat up. It could also be the heater core or possibly the hoses to the heater core are disconnected.
