Question about 1997 Nissan Pathfinder

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No heat, antifreeze smell inside vehicle coming from vents

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  • jamie_ohaver
    jamie_ohaver Feb 14, 2012

    does have some heat while driving

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Heater rad needed

Posted on Feb 15, 2012

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3 Answers

Water is leaking from the floor vents what could be the proble?


Check your heater radiator. It is usually mounted behind/near the glove box areas on most cars. It is like a small version of the large radiator that is mounted on the front of your vehicle under the hood. Antifreeze and coolant (does it smell a little like antifreeze?) flows thru your front radiator, thru the block and hoses, and cycles thru the radiator for your heating system. If the radiator is leaking, often it cycles thru the vents on the interior.
Another possibility MIGHT be the AC system and condensation/AC coolant that is building up in/on the lines and transferring thru the vents.

Aug 18, 2014 | 1999 Buick LeSabre

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Why does window on inside get wet mist out of vents smell antifreeze?


Very good possibility you have a heater core leaking. Have your cooling system pressure checked and find out.

Jul 07, 2014 | 1999 Chevrolet Lumina

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Heat does not work in 96 gs300 . when u turn heat on cold air comes out


the heater core may have gone bad or is cloged. if you can find the return line of the core pull off the hose and see if any thing comes out

Dec 19, 2013 | 1996 Lexus ES 300

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I changed the heating core but now my windows are fogging up when i turn on my heat and i also smell antifreeze coming thru the vents what seems to be my problem???


heating core has been plumbed in wrong or most likely has a leak in the system, as you are smelling the antifreeze - seems to me like the antifreeze is not reaching the core, have you mistakenly plumbed the intake/out take the wrong way round?, this would cause the windows to fog up as the heat is being taken away fro the core rather than being taken into the heater core

Sep 13, 2012 | 1996 Ford Crown Victoria

1 Answer

My 2001 town and country limited is overheating without indication from the gages and has a burnt smell coming through the inside vents of the van.


  • This I understand, a burnt smell coming through your vents, but how do you know it is the engine overheating? You said you have no gauge warning. Is your antifreeze disappearing? In other words are you having to refill the antifreeze? Is the van stopping and steaming? Stalling? The reason I ask is if you are not loosing antifreeze something else could be going on. Antifreeze does not smell "burnt." Antifreeze smells sweet like cinnamon. Give me some more details like what going on other than the smell and how is this effecting the driving of the car?


  • If you have any comments please feel free to leave them here.
  • Hope this helps and thank you for using FixYa.


Regards,Tony

Oct 15, 2011 | Cars & Trucks

1 Answer

Cooling system problems include low coolant and an acrid smell coming through the vents. We filled up the coolant and checked for leaks and there are none. Will this happen again and what is going on.


Do the windows (windshield) fog up for about 2 seconds if you switch the defroster on too? Sounds like you have a leak in the heater core. It's a small radiator located in the heater box inside the cabin of the vehicle. The blower fan blows through it to heat the cabin. If it's leaking or has a hole in it, what you are smelling is antifreeze. You can try a good radiator sealant and if that doesn't work. You'll have to change the heater core. Explorers aren't fun.

Mar 28, 2010 | 1992 Ford Explorer

1 Answer

Found a leak coming from the outside grill and runs down the inside and into my drivers well , can you help


If there is a leak getting into the passenger compartment from the 'firewall' it usually indicates a leaking heater core. Smell the leak and if it smells like antifreeze it is the heater core. If it has no smell and is clear then the drain tube from the defroster vent is plugged up causing the condensation from the AC/defroster to leak inside the vehicle.

Nov 03, 2009 | 2004 Nissan Murano

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95 escort smoke from vents vibration when accelerating why??


The smoke you could be seeing may be steam, your heater inside the vehicle may have a leak and causing steam to rise out of the vents, if you are smelling the steam this is what I suspect.
Engine vibration could be a number of things, check the engine mounts to start, one of them is probably broken.

Sep 09, 2009 | 1995 Ford Escort

2 Answers

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

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