Question about 1999 Lexus Gs 300

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Water leak driver's side floor wet. 1999 Lexus GS 300

Wet under the carpet. I have had the entire front end off the car looking for the problem. The sunroof drain is not clogged, all the drains inside the fender and weep holes are clear. All the rubber grommets coming through the firewall appear to be intact. I have had the windshield pulled and resealed. No water is coming down the inside of the window post. I have removed all the fuses and wiring on the left outside foot well. The foam rubber behind the fuses was completely dry. I run the hose on the car for an hour an its completely dry. If it sits out overnight in the rain -soaked. Not sure where else to look?

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  • philm130 Jul 18, 2009

    I read several other people on this sight that had the same problem but was not able to access any of their solutions. I was hoping to capitalize on their experience. There is no rust on the car. While I can accept maybe a body seam or some kind of caulk may be broken loose and leaking it gets me no closer to finding the leak. I have had the windshield pulled and resealed. I do not know how you would access the basement of the car? I pulled the rubber plugs where able but beyond that there is not much access.

  • philm130 Jul 18, 2009

    I saw several other posts with the exact same problem. Anyone know of their solutions?

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Is your a/c termperamental as well, i.e. blows cold some of the time but not always? If so, then you have a blocked drain in the condensor. It's pretty common and easy to fix once you locate and disassemble the condensor box which isn't usually fun. It's typically pine straw, leaves, etc. that somehow find their way in.

Posted on Jul 18, 2009

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It's a 10 year old vehicle and you should expect rust here and there.Did you check the basement of the vehicle, some parts may rust leaving tiny holes and hence allowing water.Check door seals and if possible sit and observe whenever it's raining and you may spot this leak.If there is nothing then check basement.If the windscreen has not been fitted the right way this could also cause leaks.

Posted on Jul 18, 2009

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