Question about 2001 Plymouth Neon

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When my heater is on in my 2001 Plymoth Neon it smells

When my heater is on I can smell oil or something. Sometimes it still cold and the smell upset my stomach.

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  • karilkw Jan 18, 2009

    no the windsheld does not fog up when I turn on my heater.

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Do you know what antifreeze smells like? does the inside of windsheld fog up when you turn on heater? could be heater core.

Posted on Jan 17, 2009

  • ccn7 Jan 19, 2009

    maybe heater motor is burning up, does it smell like wires burning. any moisture on floor on passengers side? still could be heater core.

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1 Answer

Burning plastic smell when cold out run heater and fan inside car and out


Are you loosing radiator fluid. sometimes the heater core will rupture and you will smell burn odor. also check for strange rubbing sounds or screeching coming from the blower fan motor. or engine exhaust manifolds are hot when car is on, make sure nothing is leaning on them which will cause a burn odor. Any odor coming from outside will find it's way inside through the fresh air vents.

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1997 blazer,heater bad smell when on


Is it a bad smell or a sweet like maple syrup smell. If its sweet you got a coolant leak probably heater core. Bad smell possible causes burning something up. I would run some water in the in the air intake below your wipers just to see if it changes. Not much but a little. Better or worse in cold tempers. Hwo about when the car first start or has run awhile does the smell get better or worse. More feed back please.

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Brand new 2011 impreza 2.5i once car is warm bad smell come form under the hood and out of the heater. does not smell exactly like oil but its pretty bad and gives me a head ache.


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2001 aurora when fan is on high for a period of time it smells like the header is burning.


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The other smell you sometimes get is when the heater core leaks. Then you will get a coolant smell inside the car and sometimes (usually) a wet carpet as well.

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2 Answers

Either its the heater core or the thermostat


your heater core is definitley leaking and your blower is pushing the vapor into the cabin. It will only get worse. You can minimize the smell by not running your heater or defroster, but you wont prevent the coolant from leaking and potentially getting worse. Sorry to say, the core will need pulled and repaired or replaced. Sometimes stop leak additives will solve the problem if its not too severe. I have never been a fan of them, its only a band aid in my view. also if u got pets afoid leeting they smell the antifreeze very toxic can kill pets easily. hope this helps. rate above 4* cheers

Mar 12, 2010 | 2005 Jeep Grand Cherokee

2 Answers

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

3 Answers

We have no heat or even air coming on in our 1996 plymoth neon there is also water leaking from under the passenger side dash board were the heater core is can you help please thanx


these guys are retarded, could be the fuse, could be the relay, could be the fan control unit, could be the resistor, could be the fan motor itself. if the heater core was leaking, you would still have heat, you would just smell coolant, if it was leaking enough to not have heat you would see it on your floorboard.

Feb 19, 2009 | 1997 Plymouth Neon

1 Answer

Cold weater start problem. Oil smoke in from the heater vent.


The same problem happened to me and it turned out to be my heater core.

Normally smoke will come from the heater core when it needs to be replaced.

Also the smell is most likely anti-freeze and and you normally smell it when your
engine is running warm or hot.

Check your coolant levels to be sure. and the hoses leading to your Heater Core

heater cores for that vehicle normally run $180 - $230 and you need to remove your
entire Instrument Panel (IP) (Dashboard) to replace it.

I hope this helps!

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2 Answers

1995 Oldsmobile Achieva - similar problem


probably needs heater core if you can smell coolant inside car w heat on

Oct 22, 2008 | 1995 Oldsmobile Achieva

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