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Check the Heater Core? Did it smell like oil or antifreeze. My Heater Core went, started blowing out smoke from the vent. Most Likely the Problem. "smoke" poured into my 1991 when the ac blew out all the freon and froze up the outside temp gage.

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โˆ™ 2006-02-04 05:01:39
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Q: What would cause smoke to come from the vents of a 1991 Cadillac DeVille?
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