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Most of the time it is caused by a hole in the heater core, do you smell a sweet smell? The sweet smell would be the antifreeze.

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Q: What might cause smoke coming from a cars air vents?
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Why is smoke coming from the vents of your car?

Smoke could be coming from the vents of your car for a number of reasons. You may have an internal car fire.


Why is smoke and water coming out of air conditioner on a 1998 dodge neon?

I assume you mean smoke and water are coming from the A/C vents. I suspect you are seeing steam and coolant. You probably have a heater core leaking.I assume you mean smoke and water are coming from the A/C vents. I suspect you are seeing steam and coolant. You probably have a heater core leaking.


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