Usually, as some have indicated, it is a heater core leak that causes this. it may not be leaking much at all ... not even enough to drip ... but that's all that is needed to cause this fogging. Also, a leak around the windshield will also cause this fogging to happen.
Been using the heat and deforst now for a few days, flust blast, and nothing's happening like that, plus the windows will fog up with the car just sitting there with nobody in the car
I think mines leaking at the heater core. fogging like you guys said plus I still loose coolant really slow, after fixing all my LIMG and check all hoses in engine bay 2 weeks ago. 7 1/2 yr old car, 150k miles.. i guess it had its life.
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I dont have an alero no more...
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