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Thread: Water leak from under the passenger side dash

  1. #1
    Join Date
    Mar 2013
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    Water leak from under the passenger side dash

    Hello! I have a BAD water leak when it rains. It somehow comes into the passenger side floor area behind the glove box. It will easily fill up the front floor pan with these crazy Florida rain storms and spill into the rear pan. I heard that there is some kinda flapper valve or something on the fire wall that dry rots? NO MoonRoof.
    Last edited by sflrainmaker01; 10-13-2021 at 03:25 PM.

    "RescuRauder", Born on 09/02/2003 & rescued on 04/05/2013. #236 of 3214 and #62 of 1237 in Black. CAI, Some kind of tune, Kooks Headers, X-pipe w/Hi-Flow cats, Magnaflow mufflers, Resonators removed, 4.10's, Metco U&L CA and Watts link, Drilled & slotted rotors, now BOOSTED!! Eaton Swapped 12/29/19!!
    Sold! 1986 Mustang GT Vert, Black, 5spd, new short block, Powerheads, Crower 15511, gears, exhaust etc.

    1968 Ford (Galaxie) XL fastback, 390, factory buckets & auto on floor
    2011 Shelby GT500, Kona Blue with SVT Performance Pkg & Navigation, VMP tuned ~550rwhp/550rwtq. Finally Blown!

  2. #2
    Join Date
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    703
    If you have a moon roof, it is very possible the drain line from it has clogged or detached in the area of the floorboards. It may also be coming from the wiper cowl area drain.
    2003 300A
    Widened Rear Wheels with 295 45 Nitto G2's
    Eaton Swapped by Curless
    Brake Upgrade
    Mo's Tune
    JLT Intake
    Addco Sway Bars
    ADTR Coil Over Suspension
    Metco Control Arms & Watts Link
    4.10 Gears
    Aeroforce Gauges

  3. #3
    Join Date
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    Check the lower corners of the windshield. Mine had the rubber pulling loose from the glass and there was an inch of crud water on the floor,soaking the carpet. I used liquid tape black rubbery goo and the car stays dry...

  4. #4
    Join Date
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    Check the weather stripping around the windshield for cracks. Seem to remember peeps having a leak issue with the rear window molding as well. How's the door weather stripping?

  5. #5
    Join Date
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    Wait...am I the only one who finds this amusing? Leaks in SF RAINMAKER 01's car during the daily South Florida Rain events? Ha! Sorry...back to helping...
    2003 300A
    Widened Rear Wheels with 295 45 Nitto G2's
    Eaton Swapped by Curless
    Brake Upgrade
    Mo's Tune
    JLT Intake
    Addco Sway Bars
    ADTR Coil Over Suspension
    Metco Control Arms & Watts Link
    4.10 Gears
    Aeroforce Gauges

  6. #6
    Join Date
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    Quote Originally Posted by Peace2Peep View Post
    If you have a moon roof, it is very possible the drain line from it has clogged or detached in the area of the floorboards. It may also be coming from the wiper cowl area drain.

    Mine does every so often. Can you check that without lowering the headliner?



    '04 MM~Black/Light Flint


    Special Service Vehicles at:
    http://www.sspmustang.org

  7. #7
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    Quote Originally Posted by sspmustang View Post
    Mine does every so often. Can you check that without lowering the headliner?
    Open the moon roof and check the moon roof drains for blockage. Very common. Daily dust & silt build up and block them.

    WLB
    BB#1) 1996 ImpalaSS - 16,500 miles - 100% stock
    ______________________________ ___________

    BB#2) 2003 Marauder (300a) - 34k miles - Daily Driver
    #2912 of 7093
    Conceived 8/6/2002
    Delivered 9/19/2002
    Adopted 8/10/2011
    Trilogy 242 - Self Installed 9/9/12 (0-60 5.5 sec)
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  8. #8
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    OP said "No moon roof"

  9. #9
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    Quote Originally Posted by MyBlackBeasts View Post
    Open the moon roof and check the moon roof drains for blockage. Very common. Daily dust & silt build up and block them.

    Thanks, will give that a look.



    '04 MM~Black/Light Flint


    Special Service Vehicles at:
    http://www.sspmustang.org

  10. #10
    Join Date
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    Thanks for the replies. With a little creative searching, I found this video. Apparently, it is a very common issue on the panther cars.
    https://www.youtube.com/watch?v=tYHikiM1e88

    "RescuRauder", Born on 09/02/2003 & rescued on 04/05/2013. #236 of 3214 and #62 of 1237 in Black. CAI, Some kind of tune, Kooks Headers, X-pipe w/Hi-Flow cats, Magnaflow mufflers, Resonators removed, 4.10's, Metco U&L CA and Watts link, Drilled & slotted rotors, now BOOSTED!! Eaton Swapped 12/29/19!!
    Sold! 1986 Mustang GT Vert, Black, 5spd, new short block, Powerheads, Crower 15511, gears, exhaust etc.

    1968 Ford (Galaxie) XL fastback, 390, factory buckets & auto on floor
    2011 Shelby GT500, Kona Blue with SVT Performance Pkg & Navigation, VMP tuned ~550rwhp/550rwtq. Finally Blown!

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