HELP wet floor - I thought this only happened to Jeeps
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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, HELP wet floor - I thought this only happened to Jeeps in Past Cadillac Vehicle Discussion; So regarding my 91 Brougham, I just got home with the car and discovered the passenger side floor to be ...
  1. #1
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    HELP wet floor - I thought this only happened to Jeeps

    So regarding my 91 Brougham, I just got home with the car and discovered the passenger side floor to be filled with water. No coolant, just water. Is a clogging of the AC drain common is these cars? The bottom of the heater box is wet so I'm assuming that's the problem.

    How do I fix it or is there something else we know to be a culprit?

    It's also been raining a LOT here but the car is pretty mint. I'd hate to think there was a leak somewhere.
    Ownership:
    91 Brougham d'Elegance 350
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  3. #2
    1980coupe's Avatar
    1980coupe is offline Cadillac Owners Connoisseur
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    Re: HELP wet floor - I thought this only happened to Jeeps

    You might have a leak/rust somewhere along the front window frame causing water to come in or firewall..

  4. #3
    SafariOne is offline Cadillac Owners Fanatic
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    Re: HELP wet floor - I thought this only happened to Jeeps

    Along the windshield is a very likely spot. Do you have the sunroof on that car?? Roof drains??

  5. #4
    codewize's Avatar
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    Re: HELP wet floor - I thought this only happened to Jeeps

    No sunroof and I'm pretty sure there's no rust. Where would I investigate for rust? Around the windshield? The car is a Florida car and has very little rust on it. Even the frame still has factory paint on it. The top does have a few small holes in it but I wouldn't suspect a breach in the vinyl to cause a leak

    So you don't think it's a clogged AC drain ?

    EDIT: just went out and did a little poking around. The cowl is clean and shiny with factory paint. There are no signs of rust anywhere on the cowl or near the windshield. I tried to stick my finger up under the bottom edge of the glass as much as possible and from what I can tell it's solid.

    I also poked the A pillars pretty good and they're also rock solid. No signs of rust that I can find anywhere.
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
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  6. #5
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    Johnny_Buchanan is offline Cadillac Owners Member
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    A pillar base and/or window frame rubber would be my guess. With Italian hardware I've seen several cases where tilted position of the car can flex body enough to let old rubber leak.

    -J

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    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: HELP wet floor - I thought this only happened to Jeeps

    LOL That's an interesting view. The car sits level during the rain. As I said this car doesn't have the normal signs of wear / age. It's been very well cared for. Rubber is soft and pliable, etc. I'm listening to what you're saying but I go out to check and that's not what I'm finding.
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

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  8. #7
    Fleetwood472 is offline Cadillac Owners Fanatic
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    Re: HELP wet floor - I thought this only happened to Jeeps

    I had the exact same problem with my 78 Fleetwood. I could never find the problem until I got a crack in my windshield and took it into a well known quality window shop in town. When they pulled the windshield to replace it they noticed a ton of rust on the frame. This was not the original windshield on it. The previous owner had it replaced. After talking with the shop they said this is pretty common because usually what happens is when people have their windshields replaced some companies that do it scrape the paint on the fame when cutting out the windshield. They then reinstall the new one and it's fine for a while however that exposed metal will start to rust causing leaks which a lot of times you can't see but you'll end up with a ton of water in your dash. What a quality shop is supposed to do is touch up the scraped areas with paint to prevent future corrosion. What they ended up doing with my car was grind out all the rust and repaint it. Now when it rains it's good to go and I have zero leaks. If you checked the cowl and see no issues around it most likely your windshield is leaking. Do you know if the windshield was replaced in the past?

  9. #8
    brougham is offline Cadillac Owners Master
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    Re: HELP wet floor - I thought this only happened to Jeeps

    It's probably from the windshield area. Even if there's rust you won't know it unless the windshield is pulled.
    Check around the heater box area too because there's gobs of sealer all over the place there and it's a lot easier to deal with that then the windshield.

  10. #9
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: HELP wet floor - I thought this only happened to Jeeps

    Hmm interesting. As far as I know the car is 100% original. So much to the point that I'm considering having it certified as a survivor. I didn't ask the previous owner but he only had the car about 18 months and didn't drive it much. It lived in a garage.

    Based on the condition of the car I have no reason to believe it's been replaced but who knows. Is there a way to tell by the markings on the glass somewhere?
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  11. #10
    brougham is offline Cadillac Owners Master
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    Re: HELP wet floor - I thought this only happened to Jeeps

    You should be able to tell by the markings on the windshield if it's original or not if you compare it to a car that is known for sure to have the original windshield. But even if it's never been replaced it can still leak over time and it's a lot more common with vinyl roof cars

  12. #11
    codewize's Avatar
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    Re: HELP wet floor - I thought this only happened to Jeeps

    Hmm OK this isn't sounding good.

    EDIT: Ok I was just investigating the heater box. Now we're talking about the entire assembly that takes up about the whole passenger side of the firewall correct?

    The sealant you're referring to is what looks like a roofing tar that they use to seal that assembly to the firewall?

    That sealant has what appear to be dry rot cracks in a few places down the left side. Is it possible that this is the problem? Now I will say that I recently sprayed that area with a hose at the carwash but I'd hate to think the floor has been flooded since then.
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  13. #12
    brougham is offline Cadillac Owners Master
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    Re: HELP wet floor - I thought this only happened to Jeeps

    Yeah. The part the heater fan is mounted in. The sealant is on there in huge gobs that cover all the areas where that box touches the firewall. I don't know if all the sealant on it is necessary or not but there was tons of it I had to scrape off last year when I did the heater core on mine. If water can find it's way past that it can probably get into the car around the holes though the fire wall. I don't know how common it is for that to happen but like I said I think it's probably a lot easier to scrape that old stuff off and reseal it then it is to have to have the windshield pulled.

  14. #13
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: HELP wet floor - I thought this only happened to Jeeps

    Mines not gobby at all. It's actually nicely applied and looks as smooth as I'd expect
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  15. #14
    talismandave's Avatar
    talismandave is online now Cadillac Owners Master
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    Re: HELP wet floor - I thought this only happened to Jeeps

    An easy way to check for where water is coming from is to spray the suspected area with aerosol foot powder. When wet again you will see where it ran from?

  16. #15
    brougham is offline Cadillac Owners Master
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    Re: HELP wet floor - I thought this only happened to Jeeps

    Quote Originally Posted by codewize View Post
    Mines not gobby at all. It's actually nicely applied and looks as smooth as I'd expect
    The cowl parts in the wiper area with the plastic screening hide most of it. You might be able to see signs of it down behind the fender. All those big GMs had it.

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