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The wet floor on the front passenger side is due to a leaking Heater Core. Besides getting your floor carpet all wet your vents, specially the window defrost vent will start to produce fog on the front windsheild. The Heater Core is a small radiator which lies on the inside of the vehicle somewhere behind the glove compartment. I had mine changed about a month ago for about $150.00 (parts and labor). The mechanic did not adust the fan vent well so now I get less air flowing out of my vents. Make sure to ask your mechanic to double check the airflow.

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Q: Whats causing Oldsmobile 88 floor leak?
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