mist coming through vents, defroster not working
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1998 Volvo S90 Question: windshield defroster not working
Answer #1Bret Bodas from RepairPal Test Shop, October 04, 2010, 22:03Master
Are you getting enough airflow, but it's not clearing the windshield? Does the air smell "sweet" and is the engine loosing coolant? If so, you may have a leaking heater core. If the air flow is not right, ,then you may have an issue with the airflow controls.