2001 SW2 - Passenger floor board getting wet

Discussion in 'Saturn S-series' started by 16essiju, Jun 17, 2025.

  1. 16essiju

    16essiju

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    2001 Saturn S-Series SW2
    Hey all, one last post for an issue ive been having, so a few weeks ago i went to my car and when i got in a notice the passenger floor carpet was darker than usual, i went to feel and it was completely soaked, like no sitting water but when i pressed down water filled the crevice. I made a fb post to that group and got a few decent answers, on of which being the cowl vent, and that was definitely clogged so i thought that was my issue. Cleaned the whole carpet, put new under carpet insulation on after cleaning it all, and i also sound deadened the floor board. THERE IS NO SUNROOF! Now after heavy rains, above the sound deadening but below the new carpet insulation is still getting wet, its not getting soaked and its never getting wet enough to soak the carpet itself, just the insulation below. Part of me was thinking maybe the insulation i used wasnt right and it was condensation or something, but no where else is it happeneing, i checked under the driver, amd under the rear passenger as well and its all still dry. After i first day i saw this i got a new blower motor with a new gasket just to see if it was dripping in from there, still happened, than i blew out and tried cleaning in the bottom of the fender thinking maybe it was clogging there and somehow weaping in, but that was not nearly as filled with leaves and shit as i thought.

    What are some other areas i can look to try and find it?? Also i spent like an hour cleaning my car the other day, the carpet fully pulled up and back in the passenger to see anything coming in, after soaking it in foam, than washing it, than hand wiping and washing it. Not a signle thing produced some water in the foot well. But sure enough a night after some rain i could go in and it will have water.

    I dont have any pictures of how much water builds up under there now, i forgit to look before i was late to work this morning, but i did upload pictures from the initial leak to show how bad the carpet was and what i got it to, and that the leak is definitely not as bad, but still present.
     
    16essiju, Jun 17, 2025
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  2. 16essiju

    Derf Moderator

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    Do you use the air conditioning when it is raining to keep the windshield clear of fog?

    The fact that it soaks the insulation but not the carpet first leads me to believe the water is running down the inside front of the firewall in the passenger area before the carpet starts. You can do silly stuff to find the leak or at least where the water seems to be coming from and flowing by making a baking soda type paste, pulling back the carpet and insulation, holding it up and smearing it across the back of the firewall above the carpet. If it doesn't run when it rains and you don't use the AC then that is not the area from where the water is coming.

    If the AC condensate drain clogs, it will dump water into the passenger foot well. Is there a difference driving it in the rain with AC, driving it in the rain without AC, and not driving it at all in the rain, just sitting in the driveway? Just sitting in the driveway needs to be evaluated after you clean and dry everything. Otherwise one of the other two situations may have caused the wetness and you'll never be able to sort it out
     
    Derf, Jun 18, 2025
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  3. 16essiju

    Derf Moderator

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    Also check the seal between the bottom of your windshield and the vehicle. You will likely need to remove or at least loosen the cowl in order to access the seal
     
    Derf, Jun 18, 2025
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  4. 16essiju

    16essiju

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    (I always forget little things like this, the AC in the car doesnt work so it doesnt get used at all. Every now amd again ill run the defrost with some heat if needed for some fog that builds the few time i drive it in the rain.)


    The fact that it soaks the insulation but not the carpet first leads me to believe the water is running down the inside front of the firewall in the passenger area before the carpet starts. You can do silly stuff to find the leak or at least where the water seems to be coming from and flowing by making a baking soda type paste, pulling back the carpet and insulation, holding it up and smearing it across the back of the firewall above the carpet. If it doesn't run when it rains and you don't use the AC then that is not the area from where the water is coming.

    (I will have to give that a try and see, i finally pulled that foam insulation thats up on the firewall back out because that actually wasnt getting wet. When the original leak happened and it was all actually soaked, that foam insulation was also very soaked, but each time now its just the insulation under the carpet, not that foam insulation up the fire wall. But while it is out i will give that a try maybe even tonight as its supposed to rain)

    If the AC condensate drain clogs, it will dump water into the passenger foot well. Is there a difference driving it in the rain with AC, driving it in the rain without AC, and not driving it at all in the rain, just sitting in the driveway? Just sitting in the driveway needs to be evaluated after you clean and dry everything. Otherwise one of the other two situations may have caused the wetness and you'll never be able to sort it out[/QUOTE]

    (This is only still happening now while sitting out in the driveway, i pulles the carpet way back and up and over night we got some good rain a few nights ago, and m ydumbass forgot to check before i left for work so the puddle *could of* been way bigger, but when i got home and checked the puddle was extremely tiny, my photo barely picked it up, and it was actually like right infront of the seat maybe 4 or 5 inches. So it definitely could of still came from the fire wall, but its definitely not.like a dumping situation anymore, just a slow annoying one that if i let go will still mold and stink.
     
    16essiju, Jun 27, 2025
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  5. 16essiju

    Derf Moderator

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    What has physically changed such that the amount of water getting in is so greatly reduced? And that it only happens when the car is stationary? I'm thinking whatever you did, maybe in the process of troubleshooting, changed something such that the path of the water is not the same as it was when you first posted.

    Also, remember that the foam insulation acts like a sponge. It will absorb any water that comes in contact with it and then distribute the water throughout the material. If it is bone dry except for right in front of the seat, either it's coming down the firewall and getting soaked up mostly or... I'm not sure.

    Two suggestions:

    Park your vehicle 180° from the direction you normally park. Let it rain and see if anything is different. Looking to see if the water is wind driven and or the orientation of where it is getting in changes enough that the amount of water getting in changes significantly.

    Blast the sucker with the garden hose. Actually have someone else systematically blast the windshield and work their way down while you sit in the driver's seat with the carpet and insulation pulled way back. I know you cannot spray under the hood at least not with a hose, but if it's running down and in, you should see where the water is entering the cabin. Do you have a sunroof? It could be something strange like a clogged sunroof drain that goes down the a pillar on the inside and then is dumping water inside the vehicle because of where it ends. If this were the case, I would think it would still happen while driving but who knows.

    It's vital that you determine what has physically changed to vastly reduce the amount of water getting in. Whatever you did seems to be critical to solving this puzzle, even if it was unintentional.
     
    Derf, Jun 27, 2025
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  6. 16essiju

    Derf Moderator

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    And.....
     
    Derf, Jul 6, 2025
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  7. 16essiju

    shadetreemechanic

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    I would check the door seal.
    This exact thing was happening to mine and that was the culprit. The front fender took a hit while parked and after I had it repaired, I discovered the door seal was leaking because the door wasn't lining up as snug. A little tweaking by the body shop and the problem was eliminated.
     
    shadetreemechanic, Jul 17, 2025 at 2:26 PM
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  8. 16essiju

    Derf Moderator

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    Shadetree,

    That is entirely too obvious.
    That's why I never suggested it.

    (Oof)

    Good call. Here's hoping you're correct, although the OP seems to be incommunicado at the present moment
     
    Derf, Jul 17, 2025 at 2:49 PM
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  9. 16essiju

    shadetreemechanic

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    It would be too obvious which is probably why I wrestled hunting it down for months with a garden hose until I finally took the interior door panel off and found it. The door wasn't visibly misaligned but was just enough that the water would get behind the seal at the top and run down behind the door panel and everything else along the way to the floor.
    Maybe we will get an update soon
     
    shadetreemechanic, Jul 18, 2025 at 6:51 PM
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  10. 16essiju

    Derf Moderator

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    Maybe......
     
    Derf, Jul 18, 2025 at 7:13 PM
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