2001 Jeep Grand Cherokee Logo
Anonymous Posted on Nov 02, 2010

When i turn on the heat, I smell antifreeze right away then it goes away

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  • Expert 54 Answers
  • Posted on Nov 02, 2010
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Your heater core is leaking. The heater core on your 2001 Jeep Cherokee is responsible for providing heat in the cab of your Jeep. Overtime, he heater core can become plugged with dust or corrosion and stop working causing it to leak. The heater core is linked with the antifreeze that runs in the radiator in turn draws heat from the engine and than uses that heat to warm up the car. Most heater cores are located under the dash on the passenger side. Here is a link for how locate and remove the heater core. http://www.ehow.com/how_5332477_remove-jeep-cherokee-heater-core.html

Good luck! :)

Testimonial: "very informative and exactly what I had heard from other mechanics. Was hoping that it was something else....can be a very expensive fix...."

  • Anonymous Nov 02, 2010

    Thanks very much

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  • Jeep Master 6,982 Answers
  • Posted on Nov 02, 2010
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If you check the rug on the passenger side you may find that it's damp. Even if it's not it is very likely that the heater core is beginning to leak. It's pretty expensive to repair but if you catch it very early a bit of radiator sealer may hold it for a while.

  • Anonymous Nov 02, 2010

    thanks
    I will check it out.
    Radiator sealer? Pour it in the radiator or in the plastic side resevoir?
    Thanks again for your help.

  • Anonymous Nov 03, 2010

    Don't put sealer in the reservoir there isn't enough circulation there and it will fall to the bottom and stay there. You put it in the radiator itself with the engine running and heater on full heat.. Remove the cap and start it, adding the sealer after it reaches operating temp and the thermostat is open. Sealer can't be considered a permanent repair but I have seen it often work especially on small leaks, for up to a year.
    '

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When will the antifreeze smell go away when you change the heating coil.

Antifreeze smell is purposely very strong to keep people from drinking it as it is sweet tasting. Make sure you mo it or the fluid level to insure there isn't a leak. Make sure there wasn't any spilled on the floorboards when the heater core was replaced. If it was spilled you will need to shampoo the carpet. It should go away on a few days.
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Toyota hilux 2.4D,done overall, white smoke on start

Is it coming from your exhaust. Does it smell like antifreeze? antifreeze has a sweet smell. That could mean a bad head gasket. Since it goes away after 15km, I'm assuming the heat expansion on the engine does away with the leak. It could also mean a lot of other things. Has your engine overheated recently?

If you need further help, I’m available over the phone at https://www.6ya.com/expert/jason_3e83613ef5f2a68b

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mine does the same thing.. it is a sign that you are burning oil kiddo..either that or antifreeze is finding its way into the engine through a crack or bad gasket.. check for oil smell and moist soot at the tailpipe, or a sweet smell if antifreeze..now if its a steam like smoke..thats normal byproduct of the burning fuel and goes away once the exhaust pipes and muffler heat up enough to blow out all the condensate water...
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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
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That smell is most likely antifreeze. If the smell gets noticeably stronger when you turn on the AC/Heater, it is possible that your "heater coil" has started leaking. You will need the services of a professional if that is the case. Those are very hard to change.

Another possibility is your thermostat is not opening, causing your engine to overheat - steaming some of the coolant (antifreeze)/water mixture out of the system.

And thirdly, it is possible that someone spilled antifreeze on the radiator etc when adding fresh antifreeze - and you smell it after the engine warms up. If your car is not over-heating and you are not having to ad antifreeze/water to the radiator, then just keep driving. The problem will most likely go away.

I hope this is helpful to you. If yes, please take a sec to rate me. Thanks!
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