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Car Smells
Antifreeze and Engine Coolant
Heater Cores and Blower Fans
Lincoln Town Car

You smell antifreeze when you turn on the heater Is it the heater coil?

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2005-02-03 11:18:18
2005-02-03 11:18:18

Clarification of terminology- Heater core not heater coil. And Yes there is a very good chance that it may be leaking.

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

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You have a coolant leak somewhere in the system, possibly in the heater core.

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Antifreeze is used to heat the cab of your vehicle. When you turn on your heat in your cab, it opens up a valve that allows the hot antifreeze to flow from the radiator into the heater core. If there is a leak in the rubber tubes that flow into the heater core, or if the heatercore is damaged, you will smell the antifreeze in the cab of the vehicle. You may need new hoses to the heater core and/or a new heater core.

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There is a very small leak in the heater core that is collecting in the vent system and is evaporating out when you turn the heater on. The smell is from the antifreeze in the water.


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