Forum Thread

inital slight burning smell when turn on car vent

ReverseHandedJO 10,459 1,770 November 12, 2015 at 11:25 AM
yesterday when i turned on the car vent i smelled a slight burning smell briefly. same thing today. is this a sign that the fan motor is going out.

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#2
probably not. it's more likely some condensation combined with other residue in the vents. however it could be something very serious like a coolant leak to the heater core

If the fan were going out, you're likely to hear something in the case of a bad bearing or discover a blown fuse. I occasionally get a bit of a mildew like smell and the easiest way to get rid of it is to blast the heat for a few minutes, sometimes heat + ac at the same time (the ac dehumidifies).
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#3
Quote from jkee View Post :
probably not. it's more likely some condensation combined with other residue in the vents. however it could be something very serious like a coolant leak to the heater core

If the fan were going out, you're likely to hear something in the case of a bad bearing or discover a blown fuse. I occasionally get a bit of a mildew like smell and the easiest way to get rid of it is to blast the heat for a few minutes, sometimes heat + ac at the same time (the ac dehumidifies).
so if it were the heater core i could feel around on the carpet under the dash on the passenger side for dampness.

the smell only last for a few seconds when i turn on the vent and smells like a weak burning smell.

i read that if its the heater core the smell would be a sweeter smell.
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#4
http://www.simple-car-answers.com...mells.html

Maybe you have a dead animal in your engine Frown

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#5
Quote from boboli View Post :
http://www.simple-car-answers.com...mells.html [simple-car-answers.com]

Maybe you have a dead animal in your engine

wtf....how did that happen lol
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#6
what make of car and what year
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#7
Quote from ReverseHandedJO View Post :
so if it were the heater core i could feel around on the carpet under the dash on the passenger side for dampness.

the smell only last for a few seconds when i turn on the vent and smells like a weak burning smell.

i read that if its the heater core the smell would be a sweeter smell.
You may or may not have dampness inside with a heater core leak, but it would generally be a sweeter smell. If things went really wrong and oil was mixing with the coolant and leaking into the heater core, it wouldn't smell sweet but you'd be noticing other symptoms.

The above link with the dead animal / nest is worth reading.

If you have a cabin air filter, replace it and thoroughly clean / vacuum around it. Try blasting the heat on the highest setting and fan speed recycling the air inside the car for 10-15 minuets.

It's probably just condensation from moisture in the car / the air conditioning. It's possible there's a drain for this moisture that's clogged. Spiders are good at blocking vents, filters, and lines in cars, they even had a role in a few recalls.
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#8
today there was no smell, so it could have been some dust that burned off on the motor.
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#9
Its fart people...fart..nothing serious. Please move on Wink
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#10
Quote from xxtanisxx View Post :
Its fart people...fart..nothing serious. Please move on
https://www.youtube.com/watch?v=-pEhqiCD27E
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#11
LOL...i remember this... super hilarious. Classics
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