unknown fluid coming through the fire wall, interior lighting
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Cadillac Allante Forum Discussion, unknown fluid coming through the fire wall, interior lighting in Past Cadillac Vehicle Discussion; Gentlemen, 2 items I was doing some under dash work a week or so ago and after pulling off the ...
  1. #1
    masmas is offline Cadillac Owners Member
    Automobile(s): 89 allante red soft top, subaru outback for the winter
    Join Date
    Apr 2013
    Location
    Ottawa, Ontario
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    15

    unknown fluid coming through the fire wall, interior lighting

    Gentlemen, 2 items

    I was doing some under dash work a week or so ago and after pulling off the under dash coverings, I found a rag tight to the firewall somewhere above the gas peddle. It was moist but not sopping. I have had the car since May and have not put in any brake fluid and the level is good based on what I see. I removed the rag and I then noticed after putting the coverings back on that the foam near the firewall was dripping fluid, oily.
    Based on the location, it would say brake fluid, the only other fluid I can think of is that the car gets undercoated every year and this is regular seepage. What could it be?
    Secondly, I have read through the forum that the reason the interior lights do not work when you open the door is because the light sensor might be u/s. The interior lights do work when you press the button on the dash. Any troubleshooting for this?

    later,

    Mark

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  3. #2
    carnut is offline Cadillac Owners Master
    Automobile(s): 1988 Allante' (sold), 1984 Eldorado, 84 Sedan DeVille
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    Re: unknown fluid coming through the fire wall, interior lighting

    Interior lights only work at night! There is an ambient light sensor in the defroster grille to tell the interior lights to come on when dark. Unlike other Cadillac's, the Allante has 2 ambient sensors in the dash. One for headlights, one for interior lights. If they do not work at all, I would suspect that sensor is unplugged? Regarding the fluid, brake fluid has a distinct odor and so does undercoating. Try a new rag to collect this fluid and maybe someone can tell you what it is. And now we know why the guy sold it don't we! Is the rod wet that attaches to the brake pedal ? from the master cylinder.

  4. #3
    masmas is offline Cadillac Owners Member
    Automobile(s): 89 allante red soft top, subaru outback for the winter
    Join Date
    Apr 2013
    Location
    Ottawa, Ontario
    Posts
    15

    Re: unknown fluid coming through the fire wall, interior lighting

    Brake fluid is down after replacing the fluid in the pump and cylinder. Carnut is correct once again, I am putting a star beside his name on the blackboard. I have read about adding an additive to the reservoir that seals gasket/orings. Is this snake oil? I looked at 2 suppliers on the net for master cylinders, 82 and 47 bucks respectfully (+/-) for new and rebuilt.

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