Quick Answer: Car Smells Like Antifreeze When Heater Is On?

What does it mean when you smell antifreeze through your vents?

Are you getting the smell of antifreeze from air vents? If so, any thoughts about the odor coming from the heater core are well founded. It’s also possible, but less likely, that leaking coolant odors are coming in with the ventilation air from an under-hood leak.

Can smell antifreeze when heater is on?

When you turn on the heat, air blows over the heater core, then it’s warmed and comes into the cabin. There are several signs of a leaky heater core: First you may notice a sweet smell from your vents. This is coolant leaking out and getting into the air.

Why does my car smell like coolant when the heat is on?

The heater core of your vehicle contains an antifreeze and water mixture, and it uses this mixture to regulate the temperature of the air inside your car. If the heater core of your vehicle is leaking antifreeze, that can cause a fairly intense smell inside your car.

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Why do I smell antifreeze but no leak?

THE CULPRIT: Coolant containing sweet-smelling (but toxic) ethylene glycol is leaking from somewhere. It might be coming from a leaky radiator cap or the radiator itself, especially if you smell it outside the car. A strong odor inside the passenger compartment probably means a bad heater core.

What are the signs of a bad heater core?

Five Signs Your Car’s Heater Core Is Going Bad

  • Fog Inside Your Car. Two things could be going on if you have fog inside your car.
  • Sweet Smells in the Car. The sweet smell in your car might not be your perfume or the donuts you’re taking to work.
  • Constant Engine Coolant Loss.
  • Cold Air in the Cabin.
  • Cold Cabin/Hot Engine.

What are the signs of a bad head gasket?

Bad head gasket symptoms

  • White smoke coming from the tailpipe.
  • BUBBLING IN THE RADIATOR AND COOLANT RESERVOIR.
  • unexplained coolant loss with no leaks.
  • Milky white coloration in the oil.
  • Engine overheating.

Can you drive with a bad heater core?

Driving with a faulty heater core can be risky, as it can lead to overheating and extensive engine damage. Even a clogged heater core can prevent proper coolant circulation, causing your engine to run hot. But if you must continue driving for a short distance, keep an eye on the temperature gauge.

Will Stop leak fix a heater core?

It easily seals leaks in plastic, aluminum, and metal radiators, heater cores, gaskets, and freeze plugs. One other benefit is this stop leak can be added to the cooling system without having to flush out the antifreeze.

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How expensive is it to replace a heater core?

Replacing the heater core can be an expensive job, and usually costs between $564 – $927 for parts and labor. The parts aren’t particularly expensive, normally costing $80 – $234, but the location of the heater core means that labor costs tend to be quite high.

Is bypassing a heater core bad?

Bypassing the heater core will effectively prevent the leak from happening but it cannot undo the damage that has already occurred as a result of the leak. There is probably a fair amount of coolant or water inside the heater core already in places that it wasn’t meant to get to.

What is the burning smell in my car?

A burning smell in your car could be caused by several things, including a burned-out electrical fuse, an overheating A/C compressor, or worn out brake pads that need to be replaced.

What does coolant leak smell like?

Clues You Have an Antifreeze Leak A sweet aroma that you notice from outside the vehicle, coming from the vehicle after you’ve driven it. You might be able to smell it from behind the wheel as well.

Why is my car leaking antifreeze but not overheating?

Chances are you have either a radiator cap leak, internal coolant leak or an external coolant leak. The longer you wait the higher the coolant leak repair cost will be. Learn how to diagnose your antifreeze leak and learn what to do next.

Where is my antifreeze going if its not leaking?

Try and track down the smoke, but if it’s white, then it’s coolant. If you don’t have a visible leak underneath your engine, then you should take a look at your radiator cap or anywhere along the top or sides of your engine.

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