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Intrepid R/T heater core bad smell

As long as I keep the heat on the winsheild the defrostworks fine. If I put heaton floor the glass starts to fog up. I have plenty of heat comming out

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  • 444 Answers

Heater core needs to be replaced, If you don,t replace it all at once you will get anti freeze leaking into the car,If it hasn,t happen (Allready) Plan on a good bill to have it changed,

Posted on Oct 30, 2012

  • Art Dibell Sr. Oct 30, 2012

    This has been going on for several years. The problem is when I don't keep the blower aimed on the window,it fogs up. almost imediately. The heat is warm enough but it gets chilly if you keep it on the window all the time.

  • Art Dibell Sr. Nov 01, 2012

    The problem of having to kee heat on constant defrost is the real problem the smell is oly incedental.As long as I keep the heat on the windsheild its fine. If I devert to the floor or any where elsethe winsheild fogs up.

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Posted on Jan 02, 2017

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SOURCE: 2000 jeep grand cherokee v8/heater core

Yes it's the heater core, It's a complicated diy job and unless you are an experienced mechanic you are going to need a good workshop manual for the job.

Best of luck.





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Posted on Oct 22, 2008

Neoklassic1
  • 70 Answers

SOURCE: when i run the heat or air cond. i smell water and windshield fogs up in the middle.

Sounds like your heater core is bad. Have someone check out the heating system and possibly replace heater core.. that should take care of the fog problem also by enabling you to use the defrost... Good Luck!

Posted on Oct 26, 2008

Scorpedo
  • 111 Answers

SOURCE: Heater core or blower motor?

Sounds like your blower motor , you heater core is a non mechanical part and if it were the issue you are correct in thinking you would see fluid on the floor or mist on the windshield.

Posted on Dec 17, 2008

  • 3 Answers

SOURCE: windows fog up,small anti-freeze smell

try looking at the air filters. MIne was totally clogged with ****. No air circulaton equals foggy windows

Posted on Dec 29, 2008

  • 47 Answers

SOURCE: 1996 GMC 1500 4X4 TRUCK- NO HEAT

I am going to assume that you checked to make sure the cooling system is full. The next thing to do is flush out the heater core. The easy way to do this is to clamp off the heater hoses with visegrips and remove them from the heater core. You will only loose the coolant that is in the core this way. Take a garden hose and try to backflush the core out until the water is clear. Being that you said you don't feel the inlet hose getting warm the chances are the core is completely blocked so it may take some working back and forth between inlet and outlet to dislodge anything in it. I have also had to use an air compressor to do it but you need to be very careful not to use too much pressure or you can rupture the heater core. Worst case is you will have to replace the core but I would try flushing it first. Hope this helps.

Posted on Jan 17, 2009

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3 Answers

What are symptoms of hearing core going bad?


LEAKING on passenger floor plugged up as in no heat.

Mar 09, 2015 | 1995 Toyota Camry

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

2 Answers

Windows fog up


Could be either a plugged vent tube in the heater box [ it's on the lower outside of the firewall ] letting the water puddle and then evaporate when heated, or a leaking heater core. If it's the heater core, you will smell coolant inside the car and may have a wet area on the passenger's side floor.

Apr 12, 2011 | 2003 Chevrolet Malibu

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Window fogs


maybe leaking heater core

Oct 20, 2010 | 1999 Volkswagen Passat

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Heater immediately fogs all windows and there is a sweet odor in the cab of 2003 Buick Rendezvous, defroster works fine, but will not clear the windows after heat is put on


Sounds like a possible heater core failure(hole in it) the smell indicates to me the coolant(anti-freeze) is leaking into the passenger compartment.
Check the carpet in front of the front passenger seat for moisture, this would confirm heater core leak.
Good luck !

Jan 28, 2010 | 2003 Buick Rendezvous

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HEATER DOES NOT HEAT. CAN SMELL SOMETHING WHEN CONTROL IS ON. WOULD THIS BE HEATER CORE RELATED?


Yes is it a sweet smell, is there wetness on passenger side floor does window get foggy. then yes heater core.

Dec 07, 2009 | 2001 Lincoln LS

1 Answer

Car front winsheild steams and fog up !


Sounds like a heater core. Are you seeing any antifreeze on the floorboards?

Mar 28, 2009 | 1995 Saturn Sl

1 Answer

Smell coolant when heater is turn on...


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

Dec 17, 2008 | 2000 Chevrolet Blazer

1 Answer

Heater works but defrost fills inside with fog.


your heater core has probably sprung a leak.does the fog smell kinda sweet?....check the floor in the front where the floor mats are for moisture or even puddles of antifreeze.(the replacement of a heater core can be very expensive as the entire dash usually needs to be removed to access the heater core)also look under the engine near the firewall for antifreeze drips.

Dec 13, 2008 | 1998 Dodge Caravan

1 Answer

When i run the heat or air cond. i smell water and windshield fogs up in the middle.


Sounds like your heater core is bad. Have someone check out the heating system and possibly replace heater core.. that should take care of the fog problem also by enabling you to use the defrost... Good Luck!

Oct 26, 2008 | 1999 Jeep Grand Cherokee

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