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Thread: Front Fogs mistng up

  1. #1
    Regular Member DurhamRed's Avatar
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    Vehicle : Vectra SRi


    Engine : 1.8VVTi

    Year : 2008

    Default Front Fogs mistng up

    Anyone had the same problem? Mines an 06 SRi and ever since we had the heavy rain 3 weeks ago my fogs are misted up. I have left the car parked outside the house with the foglights on for about 20 minutes which does remove the moisture only for it to ****** return the next morning!
    Anyone got any ideas on how to rid the fogs of the moisture permanently?
    This has only been an issue for me since the bad weather but I'm worried it could rot the foglight units unless I get rid of the moisture. By the way I can see no water inside the units. Just condensation.

  2. #2
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    Vehicle : Vauxhall Astra-J

    Trim : Elite

    Engine : 2.0 CDTi

    Year : 2013

    Default

    You know those small bags of desiccant (moisture absorber) that you get in the bottom of the box of a new pair of shoes, or in the box of some new electrical equipment. Well, undo the cap where you access the bulb, and place the small bag into it and refit the cap.

    I did this 3 months ago and since then no more misted up nearside foglight.

  3. #3
    Regular Member KSD's Avatar
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    My nearside foglight is always misted up. Not done owt about it yet tho! Will strip it down and sort I think. Not sure what is causing it to condense, must be a poor seal.

  4. #4
    Regular Member steve1975l's Avatar
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    Drill a 3mm hole in cover, I am sure it's a pressure thing which draws the water in through the poor seal.

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    Vehicle : Vauxhall Astra-J

    Trim : Elite

    Engine : 2.0 CDTi

    Year : 2013

    Default

    Quote Originally Posted by steve1975l View Post
    Drill a 3mm hole in cover.
    I did that and ended up with mucky water in the foglight after driving through a deep puddle. Had to take the fog light off and wash it out, dry it, then block the hole up. 2 days later it misted up again, but since fitting the moisture absorber it's not fogged up since.

  6. #6
    Regular Member john_k_sri's Avatar
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    Vehicle : Vectra

    Trim : SRI NAV XP

    Engine : 1.9 CDTI 150

    Year : 2007

    Mileage : 72K

    Default

    Quote Originally Posted by Big Dave View Post
    I did that and ended up with mucky water in the foglight after driving through a deep puddle. Had to take the fog light off and wash it out, dry it, then block the hole up. 2 days later it misted up again, but since fitting the moisture absorber it's not fogged up since.
    What I did was drill a hole in the cover as Steve1975l did, which de-misted the foglamp, and to avoid your problem I plugged the hole with a plastic plug/grommet thing I had lying about. Best of both worlds methinks. To de-mist I can either unscrew the cover or simply remove the 'plug' and replace one or the other after the foglight has cleared.
    Last edited by john_k_sri; 31st July 2009 at 10:54.

  7. #7
    Regular Member steve1975l's Avatar
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    I haven't had any problems with it since and I drive down flooded country lanes. It must have been a deep puddle.

  8. #8
    Regular Member Dan_BlackSRi's Avatar
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    Vehicle : Vectra SRi

    Trim : XP NAV

    Engine : 1.9 CDTi 150

    Year : 2007

    Default

    Quote Originally Posted by john_k_sri View Post
    What I did was drill a hole in the cover as Steve1975l did, which de-misted the foglamp, and to avoid your problem I plugged the hole with a plastic plug/grommet thing I had lying about. Best of both worlds methinks. To de-mist I can either unscrew the cover or simply remove the 'plug' and replace one or the other after the foglight has cleared.
    Following this good mans advice, I pierced my cover with a drawing pin, and its been perfect since, also the hole is small enough to not let water into the foglight (as I have been checking for this).

  9. #9
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    Vehicle : Vauxhall Astra-J

    Trim : Elite

    Engine : 2.0 CDTi

    Year : 2013

    Default

    Quote Originally Posted by steve1975l View Post
    I haven't had any problems with it since and I drive down flooded country lanes. It must have been a deep puddle.
    It was when the floods were about a few months ago.

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