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Foggy Windshield 850

posted by  klruff1 on  Wed Oct 13 08:17 CST 2004
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The past 2 days I have a situation where the inside of the windshield is fogging up. Got the car washed yesterday and noticed the inside of the w/s had a film - thought it was just a poor job of cleaning so I got the Windex out when I got home and cleaned up the window. Today at lunch time, I started the car and noticed the window was fogged up again. The climate control position was set to blow on the windshield and on the floor. I hope this isn't a sign that my heater core is going. I haven't smelled any anti-freeze, noticed any leaks, nor has my anti-freeze overflow shown any loss. Any ideas? Can the heater core be tested? Does the dash have to come out to replace it? My car is a 95 850 Turbo Wagon with 110K on it.

Thanx,

Keith








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    Foggy Windshield 850

    posted by  someone claiming to be V70BB on  Thu Oct 14 05:44 CST 2004 [RELATED]

    One other thing. Does it fog up when you turn recirculate off, or is this already with it off?

    BB








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      Foggy Windshield 850

      posted by  klruff1 on  Thu Oct 14 11:31 CST 2004
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      Recirc was off when it fogged up. Did the checks you told me about and everything is as dry as can be with no smell of antifreeze. Didn't fog up today, though I did not try to set the air to blow on the windshield. I just had the car washed when this all happened. A friend said this happened to him once after he has his car washed and he believes it was a chemical the place used to clean either the dash of windshield as the place changed chemicals and it never happened again. Sounds confusing to me. Will keep an eye on the system to see if I get fog again. Glad to see that the dash will not have to be removed to get the heater core out if/when it needs to be changed.

      Thanx.

      Keith








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        Foggy Windshield 850

        posted by  someone claiming to be Wolfgang on  Tue Oct 19 02:51 CST 2004 [RELATED]

        Another thing to consider is whether your heater is ingesting water when washed or in rain. This can happen when the drains for the plenum chamber block and the plenum floods into the heater assembly. Easy to check for by lifting the plastic panel over the plenum (under the wipers) and checking visually and with a gentle water flush. Expect to find 2 drains in there - one may be obscured by the fuse box, but you can feed a wire or stick past to give it a stir.

        May be a long shot, but cheaper than a new heater core.

        Wolfgang







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        Foggy Windshield 850

        posted by  Mitchell21 on  Thu Oct 14 15:53 CST 2004
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        last visit: Sat Nov 6 15:54 CST 2010
        [RELATED]

        When this symptom happened to me it was my heater core, which is quite common. about 300. for the part an an hour or so of labor. Car wash might be a coincidence.








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    Foggy Windshield 850

    posted by  someone claiming to be V70BB on  Thu Oct 14 05:43 CST 2004 [RELATED]

    Dash does not have to come out. I just did mine two weekends ago, and it is fairly straightforward, but and this is a big but, you don't show any other signs that there is a leak.

    Take up the driver side floor mat and tell me if you feel moisture, and/or smell coolant in the rug.

    BB








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    Foggy Windshield 850

    posted by  someone claiming to be Jose Rizal on  Thu Oct 14 02:42 CST 2004 [RELATED]

    Unfortunately is looks like a leaking heater core. Good luck.







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