Question about 1995 Chevrolet Lumina

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1995 Chevy Lumina Has White Smoke (NOT WATER) Coming out Vents

First let me say thanks for looking at this post. A little about me I have spent the last 35 years working on cars and know a great deal about them, however I have never seen this problem before! The problem is at random times but always when the car is hot and when I accelerate from a stop. I'm 100% sure it’s not a core leak. Its SMOKE! Everything electrical works fine. There is no smoke under the hood or out of the tail pipe. The smell is not; sweet like antifreeze odor, insulation burning, burning oil, burning transmission fluid, case odor. All I can say is it wreaks like something burning. WHAT??? Any ideas? Thanks in advance.
1995 Chevy Lumina 3.1 Automatic
Has White Smoke (NOT WATER) Coming out Vents.
Its a VERY nasty smelling odor

Posted by coins4me on

  • blueextc3221
    blueextc3221 May 11, 2010

    Could be an incorrect refrigerant charge or defective pressure switch causing
    the evaporator to freeze and the air flow over it is causing the ice to melt and
    the resulting white smoke is condensation. Could be an evaporator core leak, and the smell is from the refrigerant
    oil, and the fog is the refrigerant. Also - there is a resistor block which controls the blower speed in the ducting. When
    one of the resistors goes, white smoke is fed dirrectly up to the vents.
    Replacement is easy (admittedly while doing a head stand in the passenger
    footwell) and fairly cheap.

  • Anonymous Mar 21, 2014

    It does not appear to be water vapor because the windows are hard to clean.
    I also have a non-functioning low mile radiator fan.
    And oil sometimes suddenly goes 3-full 4qts. low with no visible signs of leak or burn



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Have you checked your converter on the exhaust

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