What would cause light smoke to intermittently issue from the vents

1991 PONTIAC SUNBIRD
160,000 MILES
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STEVESHURTLEFF
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In a 1991 Pontiac Sunbird LE? Just guessing here, but I don't think it's electrical as it hasn't blown a fuse. This seems to occur regardless of what setting the controls are on, and is frequent but not constant
Feb 14, 2012 at 4:29 PM
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ASEMASTER6371
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heater core leaking.

Roy
Feb 14, 2012 at 4:39 PM
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STEVESHURTLEFF
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Thanks for the fast response on that, Roy. Is this something I should be concerned about? Obviously it will take out the heater in time, but what is the likelihood it will disable things like a simple vent setting?
Feb 14, 2012 at 4:42 PM
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ASEMASTER6371
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it is a coolant leak. little now but will get worse in time. i would not delay in confirming it and getting it repaired.

Roy
Feb 14, 2012 at 5:07 PM
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STEVESHURTLEFF
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Ok...will do, thanks
Feb 14, 2012 at 5:09 PM