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You have a leaking heater core. You might smell antifreeze if you turn on the defroster.
A small amount of antifreeze smell may be emitted from the radiator overflow. However if you smell antifreeze you need to make sure there isn't a leak. It may be something simple if you catch it early.
You have antifreeze leaking from somewhere that is hitting something hot and turning it to steam.When you turn on the AC the fan is pulling it into the vents. Keep track of your engine collant levels and if they are lowering then there is your problem!!
Out of gas.
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.
you will notice oily bubbles in antifreeze, and if there is water in your oil it will turn into a creamy caramel color and sometimes even froth into a white lithium grease consistancy
Clarification of terminology- Heater core not heater coil. And Yes there is a very good chance that it may be leaking.
set e brake
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.
More than likely the heater core is leaking.
If the heater has a sweet smell it could be that the heater core is leaking engine coolant. When the leak gets worse you will have a wet floor on the passenger side and the windshield will fog up when you turn on the defroster.
no