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Car Heaters

Why might your car heater not be blowing real hot?

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Wiki User
2005-01-28 01:53:37
2005-01-28 01:53:37

Check your antifreeze. When you remove the radiator cap (make sure the engine is cool) there should be some antifreeze at the top of the radiator neck. If you don't see any, then the level may be too low and you'll have to add some antifreeze.

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faulty control valve on heater or air in the lines

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Low coolant and a clogged heater core are possibilities.

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You need to change your thermostat in the car.

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The heater core is leaking coolant.

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Heater blower motor is defective and locked up, or possible short in the wiring.

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AnswerBad thermostat, clogged heater core, or a defective heater control switch. If an engine has not been running long it will not have warmed up, the warmth from a car heater usually comes from the engine.

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Low on coolant. Bad thermostat. plugged heater core. Temp blend door malfunction.

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Depends. You might be low on coolant. Or your heater core could be clogged. Neither of those instances is particularly "safe". But, it could just be a blend door, which wouldn't matter.

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You might need a new thermostat or heater core.

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Low on coolant. Stuck open thermostat. Plugged heater core. Temp blend door inop.

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needs heater core replaced wost likely be hind the glove box

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Check for a thermostat that is stuck open. Also can be a clogged heater core, or defective heater temperture control valve.

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most likely thermostat stuck less than $ 15 part

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that's because you have to let get started and you havent used for little and it turns down

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well you could just turn the heater off heater blower ---- If it is a car heater then check your coolant level. the heater is driven off a heat converter that is fed by the radiator system. When the coolant fails to pump round the radiator system the car internal heater doesn't work. Driving without coolant in the system will result in the engine overheating and seizing.

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I assume your car heater is blowing cold air, when the heater is on. It seems that, you have air on your coolant. that air pockets blocks the cooland to travel through your heater. it may be a sign of a bigger problem such as blown head gasket in the old cars, such acura legend

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The heat for the interior of your car comes from the heated radiator coolant. When you are driving down the road the water pump circulates the heated engine coolant. If the engine slows and the water pump isn't real efficient you might get cooling in the heater. When you turn off the engine you aren't getting warm water pumped into the heater.

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You have a leaking heater core. You might smell antifreeze if you turn on the defroster.

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I'm not sure but I know it has heated seats. That might be where the heater is located in the car. Not sure.


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