I have a water leak that shows up as a wet floor board (below floor mat)on the driver's side. It occurrs when the car sits idle in the rain. the car has sunroof (no known problems).
I was a manager at a Mitsubishi dealership.
There was a "secret warranty" on certain Galants where the firewall seam would fair and leak water into the interior. Call your local dealer to see if your vin qualifies. The fix is to simply reseal the firewall crimp seam with silicone sealant.
Alternatively, sunroof equipped cars sometimes get the drain channels clogged in time. Make sure to clean drain holes and use forced air if necessary.
Lastly, some cars have heaters with pollen filters. If those filters become clogged, condensation can accumulate and overflow into the interior.
If any of these solves your issue, please rate my answer
THE PROBLEM WAS WITH MY CAR THAT THE AC CONDENSATION DRAIN TUBE IS INADEQUATE IT WILL RUN BACK AND DOWN ONTO THE FLOORBOARD. I TOOK THIS TO A MITSUBISHI DEALER AND THE PROBLEM COULD NOT BE FIXED AND THEY BLAMED IT ON MANY PROBLEMS. I FINALLY TOOK IT TO A RECOMMENDED MECHANIC AND IN 15MIN AND 45.00 HE HAD IT FIXED BY PUTTING A 90DEG FITTING ON THE DRAIN TUBE TO ENSURE PROPER DRAINAGE OUTSIDE OF THE VEHICLE AND IT HAS BEEN FINE FOR OVER A YEAR. WHAT I FOUND OUT AND BY SPENDING ABOUT 300.00 AT THE DEALER IS THATA THEY DO NOT THINK OUTSIDE OF THE BOX, IF IT IS NOT IN THE REPAIR MANUAL THEY CAN'T FIX IT.
The problem is most likely the A/C condensation drain plug. It not easy to fix. And it only happens when you are running your A/C.
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It the a/c drain that stop up. To fix it u have to take the dash out. Remove the case an cleen it out.
It's nothing mechanical i'm sure.. the water is coming in from the outside..
good luck ray
Additonaly, I would check your windshield. I have had this same problem. If you take it to a windshield repair place. they can clean out the seal around the windshield and re seal it. I have had this happen to me on 2 different cars. At first I thaught it was a bad heater core. But after further investigation I found it to be a bad seal in both cars around the windshield.
tepfy
the area that water is coming in from under the hood. You can go out and get generic sylicone in the hand bumps like you put on your tub. you can even get black in color if you want. and seal that baby up. I use to use the sylicone on the MGB's like it was going out of style. They will tell you the stuff they are using is different, its not.
tepfy.
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I have a water inside on the the carpet on driver side and in the back side of driver side on my Mitsubishi Galant 1999 when rain but I cannot find the leakeage. My car don't have sun roof.
Thanks for all of the replies. In the meantime from other sources I also discovered that I was missing the 90 degree fitting on the end of the condensate darin tube. I replaced ast a cost of $22 which seemed to stop water from entering from the engine compartment.
However, I seem to still have a moisture entry problem that may be coming from the area closer to the side of the car. The rubbery insulation against the floorboard on the incline below the pedals is damp. It seems more damp on the left side verses the right, and is very damp at the bottom center (gravity). Just discoverd this last evening. The carpet padding is still dry.
Previously I verified that the sunroof and firewall vent drains do drain to underneath the car (i.e. not plugged up). I also found a TSB thatinvolved replacing the seal around the condensate drain. Cost at the dealer for this repair would be ~$540. And now that I added the 90 degree fitting, I do not that is where the problem is anyway.
The dealer did not offer up any "secret warranty." Guess the firewall crimp could be a source; also the winshield seal. I ran water in both areas but failed to see any water seapage, but then it is kind of hard to see everywhere under the dash anyway.
coming from under floor mat
cant find where the water is coming in have tryed everything
After a Rain storm my back seat floor floods and is full of water.What shpuld I do?
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