Question about 2000 Chevrolet Blazer

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Smell coolant when heater is turn on...

I have a 2000 Chevy Blazer. When I turn on the heater you can smell coolant inside. And keeps on fogging the windshield but it's not moisture, it's antifreeze. So, I was wondering what's wrong with the car. Thanks.

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  • dreadula Jan 08, 2009

    I am replaceing the heater core but I think I have to discharge the A/C in order to get to the fire wall mounting bolts and nuts for the heater case. What do I do?

  • Anonymous Mar 07, 2009

    I have fog coming out of my vent and y windows get fogged up and i smell antifreeze inside

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The heater core inside the dash is leaking, it may get worse and coolant will start to drip on the floor out of the heating outlet

Posted on Dec 17, 2008

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1 Answer

When I turn my heater and defroster on, a bad smell starts and the windows fog up but the air is hot.


This may be due to a bad heater core or dirty core with a plugged water drain, first see if the a/c works. turn it on and see if the air gets cold and if the ac compressor works.

The way the defrost works to keep windows from fogging up is that when the front defroster is tuned on the ac should also be on, on most cars when you go to defrost it will turn ac on automatic. the system then uses hot and cold air to remove the moisture in the air to avoid window fogging. if your a/c is not working then that may cause window to fog, but if you are also getting a smell then the drain that lets out condensation may be plugged and then water builds up and also mold from always being wet and when heat is on you smell that.


i want you to run the defrost and when windows fog up wipe window with hand and see if it is greasy . if it feels oily then you may have a bad heater core, the core leaks coolant out and steam and causing windows to fog up with a flim of grease.

Feb 03, 2013 | 2000 Chevrolet Silverado

Tip

Fogging up your interiors windsheild? The smell of coolant in your vehicle?


If your windsheild starts to steam up while driving your heater core has a leak causing this. Also you may receive the smell of burnt coolant before the fog starts activating. Best thing to do it get it repaired asap. Your coolant level will go down everyday you keep driving this way. The smell will get you sick to your stomach as well

on Feb 07, 2010 | Cadillac DeVille Cars & Trucks

1 Answer

Churping fan noise inside car behind the middle heater/air vent and a smell of burning oil or anti-freeze coats me and my clothes while inside car Help Help.


Not familiar with Saab at all, but on every other car made, if you smell coolant inside the car and a fog covers the windows, the heater core needs to be replaced. Depending on the design of the heater box that contains your blower motor and heater core, leaking coolant may be destroying your blower motor, and causing the noises and metal smell.

Oct 07, 2012 | 2002 Saab 9-3

1 Answer

While driving my 95 explorer i noticed the heater wasnt getting hot its luke warm and when i turn on the defroster i start to smell anti freeze and all of the windows fog up


no heat is probably low coolant or bad thermostat,although you have fog and smell ! the heating and cooling systems are closed systems the only way the windows fog is the coolant is hot and steams inside the car due to some leak inside the heater core box. as well as the smell being present. Now it is possible that a little leak has occured where the coolant supply or return line connects to the heater core and is running into the car which is running onto the core and creating steam and smell. hopefully it is a easy clamp tighten fix for you.

Jan 13, 2011 | 1995 Ford Explorer

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200 VW Beetle engine coolant problems


the heater core could be leaking that explains the fog but i would have the water pump checked

Aug 24, 2009 | Volkswagen New Beetle Cars & Trucks

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Antifreeze smell and smoke coming out of vents


You have a coolant leak most likely in the heater core. Try disconnecting your heater hoses and coupling them together, then running the engine to see if the leak goes away. If it does, I would have the heater core replaced.

Dec 28, 2008 | 2001 Chevrolet Blazer

1 Answer

Windows fog up,small anti-freeze smell


The early sign of a heater core leak is the smell of coolant, the reason is that only vapor is leaking now, it will gradually get worse in most cases and coolant will start comming out the heater box condensation drain.

Dec 21, 2008 | 1996 Eagle Vision

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