How do I know if my heater core is bad?

Do you have coolant on the front passenger floor board? When heater cores fail it will leak onto the floor board and mist coolant on the windshield. If you have a loose clamp on the heater core hose it's possible it could be leaking down the firewall into the passenger compartment. If you don't have coolant on the windshield check the clamps / hoses first.

Nov 16, 2009 • 1996 Buick Skylark

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I get a smell of antifreeze when I put the outside

Firsdt check the radiator cap thats it tight , then check for any anti freeze visible on the engine, then check under the car for any leaks. Is the smell of anti freeze inside the car ? , check the heater core you may have a leak there. the newer heater cores are aluminum and certain anti freezes, are extra acidic , which causes the anti freeze to eat at the heater core causing leaks, it maybe be a pin hole leak in the heater core ,causing the smell.

Jul 12, 2009 • 2000 Chevrolet Blazer

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On my 1998 volvo s70 the floor is wet with coolant on the drivers side and when using the a/c you can smell freon and you can see a white fog coming through the vents

Your Heater Core is Bad= Coolant on Pass Floor
If A/C Does NOT blow Cold anymore the Evaperator Core is Leaking
First time I have seen them BOTH go Bad in 30 rs of Bein A Mech/Tech

May 31, 2009 • 1998 Volvo S70

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Heater core

If it is antifreeze, yes. It could be just water from a clogged a/c drain or rainwater leaking in from a bad seal.

Feb 28, 2009 • 1999 Chevrolet Malibu

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The heater core shares the same housing as the air conditioning evaporator core. The drain for the AC is designed to leak condensation. The coolant could be draining out of the same drain hole. To test a heater core you must use a cooling system pressure tester. If the pressure drops during testing search for your leak looking at all your cooling system components including your radiator. If the heater core is leaking coolant should be coming out of the AC drain hole.

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How do I know if my heater core is bad?

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How do I know if my heater core is bad?

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Anonymous

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Attachments: Added items

Related Questions:

I have a 2013 Chevy captiva. It's bowing cold air in the heat setting and my floor is wet under the mats. Help! Don't want to get screwed. I'm a woman. ('' ;")

I have a 2001 jeep grand Cherokee Laredo I think the heater core is bad but not completely sure. my windshield will fog over just slightly down next to the vents and you can smell hot anti freeze in the...

Water under my floor mat on the passenger floorboard on the passenger side of my 2004 toyota

When I run the heater or defroster, steam comes out the vents.

Leaking coolant on passenger side but engine is dry. There is a tube that sticks out from firewall about two inches and appears this is where the coolant is coming from, but I don't know what this is for.

Smoke is coming out of my vents

I have a problem with my fire wall leaking coolant, it seems to be comming out of one of the hoses that lead to the heater core.but i have no loss of heat and i cant smell anything from the vents.and i was...

I get a smell of antifreeze when I put the outside

On my 1998 volvo s70 the floor is wet with coolant on the drivers side and when using the a/c you can smell freon and you can see a white fog coming through the vents

Heater core

Not finding what you are looking for?

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I have a 2013 Chevy captiva. It's bowing cold air in the heat setting and my floor is wet under the mats. Help! Don't want to get screwed. I'm a woman. ('' ;")

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