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Thread: Rain water ingress detected at bottom of A pillar

  1. #1
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    Rain water ingress detected at bottom of A pillar

    My previously dry driver side footwell carpet now becomes sodden after rain. This is a recent happening. It is wettest right where the A pillar meets the floor. The headlining is dry, so is the carpet up behind the pedals, and likewise the space behind the footwell side kick panel and the area above in the dash, adjacent to the fusebox is also dry. The windscreen was replaced in 2010 and the vehicle interior has been absolutely dry until the last few weeks. Gotta say that I am not impressed with the way roof gutter ends right wherIMG_1522.jpgIMG_1520.jpge the A pillar finishers and the windscreen top weatherseal all come together. Poor design really and maybe the cause of my problem. Anybody have experience with this?
    LROCV member #131
    1999 build D2 TD5 Auto, Mantec snorkel, 2" LRA spring lift, ARB on board air, Ashcroft ATB, CMM air ram CDL shifter, swag & gold pans ....

  2. #2
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    Not from that area.
    But due to it being a Land Rover, a Discovery & 15 years old I have rubber cupped mats for just such an emergancy.
    After heavy rain it only takes one towel to mop up each side.
    Jonesfam

  3. #3
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    It could be that the windscreen needs resealing. That hole at the top is normal. Gently remove the A pillar trim and have a close look and/or run a hose over over and see if any water comes through.

    I’ve had this issue on other cars in times past.

    cheers

    Steve

  4. #4
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    Thanks Steve, I did read that LR issued a TSB about sealant failure between the roof and the top of the A pillar. I have that TSB now and when the rain stops will investigate that and the windscreen sealing. I have determined that the A pillar is holding a quantity of water and it’s visible seeping out between spot welded panels inside the cab and outside underneath where the A pillar panel tapers to meet the floor panel. IMG_1528.jpgIMG_1532.jpg
    LROCV member #131
    1999 build D2 TD5 Auto, Mantec snorkel, 2" LRA spring lift, ARB on board air, Ashcroft ATB, CMM air ram CDL shifter, swag & gold pans ....

  5. #5
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    IMG_1534.jpg
    A hole drilled at X will release much of water ...
    LROCV member #131
    1999 build D2 TD5 Auto, Mantec snorkel, 2" LRA spring lift, ARB on board air, Ashcroft ATB, CMM air ram CDL shifter, swag & gold pans ....

  6. #6
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    Does it have a sunroof? If so, there is a drain that blocks under the car that is easily cleared. In fact, it may not just apply to sunroof cars. I'd take a pic under mine, but what do you know, it's ****ing down here.
    ​JayTee

    Nullus Anxietus

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    2000 D2 TD5 Auto: Tins
    1994 D1 300TDi Manual: Dave
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    OKApotamus #74
    Nanocom, D2 TD5 only.

  7. #7
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    The only time I have seen a D2 leak is where some joker had hamfisted a windscreen replacement. Typically buggering up the seals etc.

    Cheers

  8. #8
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    1. Quote Originally Posted by ozscott View Post
      The only time I have seen a D2 leak is where some joker had hamfisted a windscreen replacement. Typically buggering up the seals etc.


    You didn't see mine, then. The reason I found out where it leaked was because I got that screen mob with the Oirish name out to reseal my screen, and they told me, no charge, that it wasn't the screen. and advised me to pursue the sunroof. Admittedly, it was an aftermarket fitted at original purchase, dealer organised, but I believe the same drain getting blocked can cause the footwells to fill up when there is a hole ( well documented, here and elsewhere ) at the top of the A pillar, or the OE sunroofs drain through the same passage, although that's an educated guess..
    The screen guys had seen it before many times, and even gave a piece of piano wire to fix it with. This didn't work, as the tube down from my sunroof only reached down to about the top hinge, but it pointed me in the right direction. There is a small opening

    ( , I'll try to remember to take one )

    at the bottom of the A pillar that blocks. This drove me nuts, as the car would fill up in the footwells, I'd dry it out, it wouldn't rain for a bit, the car would dry out, with some help, and then it would rain, or I'd get my then wife to play the hose, and nothing would happen. I'd go away, scratching my head. Then we'd get a day or two of real rain, and it would fill up again. It needed to fill the bottom half of the A pillar again, and it would come into the car via the kick panels.

    D1 and D2s have known issues for front floor flooding. The two issues are not the same. I have both types here, both fill the footwells occasionally, and there is nothing about them that is the same, other than the top of the A pillar leaks which have been posted about since AULRO began. The "opening" I speak of in the D2 does not exist in the D1. These cars do my head in.

    I do not say this is what the OP's problem is, but it could be. I chased this damned leak for over 6 months, and solved it at about the time the car died. I tried the same approach to my leaking D1, and found that the two cars are chalk and cheese, nothing I had learnt was of any help.

    All of the above explains why I am attempting to revive my SIII tray truck. Heck, ALL Series cars leak. They leak in, they leak out, and they don't usually have carpets..., unless their owners are mad....

    I will attempt to get a pic of the drain I mean, but rain may stop play for a bit.
    ​JayTee

    Nullus Anxietus

    ​Getting involved in discussions is the best way to learn.

    2000 D2 TD5 Auto: Tins
    1994 D1 300TDi Manual: Dave
    1980 SIII Petrol Tray: Doris
    OKApotamus #74
    Nanocom, D2 TD5 only.

  9. #9
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    There’s a rubber flap where the door check strap connects. I sealed that up on the pax side and eliminated water getting into the A pillar and the footwell
    _________________________
    Discovery 2 2002 Td5 ES Auto
    Defender 110SE 2023 D300

  10. #10
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    Rain water ingress detected at bottom of A pillar

    I have found the cause of the problem - there is a drain hole at the bottom of the A pillar accessible from the inboard side of the floor sill panel - however it was hidden from view and totally blocked by accumulated mud on the sill ledge
    IMG_1543.jpg
    LROCV member #131
    1999 build D2 TD5 Auto, Mantec snorkel, 2" LRA spring lift, ARB on board air, Ashcroft ATB, CMM air ram CDL shifter, swag & gold pans ....

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