A car heater can fail due to a number of reasons. However, there are two basic problems responsible for failure: either the coolant is not flowing through heater core, or the air from blower motor is not being directed through the heater core. It is to be kept in mind that there can be a number of other reasons for the car heater to suddenly stop functioning.

The car heater can blow cold due to cooling system issues. Four principle cooling system complications can result in the heater to output cold air: stuck thermostat. Plugged heater core, air in cooling system and coolant not flowing in heater core.

Thermostats are actually valves which open and then close. It is dependent on the coolant temperature. For the warming up of the engine, the valves remain closed until the engine coolant reaches a certain range of temperature. In case the valves do not open at that time, there will be no proper circulation of the coolant. The engine could over-heat and there could be a problem with the heater blowing cold.

When the thermostat remains open, it could stop engine from getting warmed up in a proper manner. The period of warming up could also be prolonged. In case the heater blows lukewarm and not cold, an open thermostat could be a probable cause. For the best car accessories, drive down to New Jersey State Auto Junction in Jersey City, New Jersey.

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New Jersey State Auto Auction

406 Sip Avenue

Jersey City, New Jersey 07306

Phone: 201.355.4138

Website: www.NJStateAuto.com