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Could be that your heater core is leaking. Also common through firewall....especially where the hinges for the hood mount. I had the same problem with a 450 SLC and after many tries inside the car and many wrong fixings I discover one day that the car din't leave any water in the floor,so I thought it was plug ,but not ,it was a crack on the plastic box that cover the evaporator core ,I sealed it and problem gone.

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Q: What would cause a Water leak under dash on 1984 380sl Not the windshield or ac?
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Why is the passenger floor of your 96 jeep grand Cherokee wet from the air conditioning?

b CAUSE U HAVE A LEAK There could be a body plug that has came loose or fallen out completely. Get up under ypur vehcile and check for any holes. if there is one missing. replace it. I had this happen in another vehicle right after the windshield was replaced. The windshield wasn't sealed properly. After a heavy rain, I had about an inch of water on the floor board. After I took it back and had them reseal the windshield, the problem was gone.


Where is Prizm windshield washer fill?

The container is located under the hood on the passenger side wheel well.


How do you fill rear windshield washer fluid in 2012 grand Cherokee?

It is the same reservoir as the front, under the hood.


Does a 1997 Jeep Cherokee have a cabin air filter?

I don't think so. There seems to just be a screen under the hood under the plastic on the passenger's side just under the windshield.


What can cause water to leak in on the passenger side floor board and rear passenger side floor board of a 2001 Pontiac Grand Prix only does this when the air conditioner has been on?

air conditioning can cause moisture in the air to condense, especially around vents where the air is moving at high speed. If you live in a very humid area, this could be caused by the air conditioning being so cold that the moisture is condensing out as soon as the cold air meets the warm, damp air. Try running the air conditioner at a higher temperature setting, or on 'normal' instead of 'max'. The more likely senario is that water is leaking in from an area below the windshield under the hood. There is box (under the plastic cover at the bottom of the windshield on the passenger side) that allows air from outside to be pumped inside. If you have this area open you will a see foam seal painted the same color as the vehicle at the base of the box. This so called seal dry rots and GM knows this; however, the seal cannot simply be replaced from what I was told by a windshield replacement shop and a dealer. It is riveted together and must be cut apart and then reassembled. This issue caused the blower motor to seize after the leak corroding the internals of the motor itself.

Related questions

How do you find the windshield wiper motor on a Mercedes 380sl?

it is in the back right corner, in front of the drivers side....tucked under the dash


What would cause my 2002 Pontiac sunfire to leak water under the passangers side under the dash when it rains or when taken through the car wash?

The cause of this would be a bad weather stripping on your door or bad seal on your windshield. To find out pour water on your wind shield to see if it leaks or look at the rubber seal on the door and see if its ripped. if it is it needs to be replaced. if its the windshield you will have to bring it somewhere so they can reseal it.


Why could water be standing in one part of floorboard of Honda?

If you left the vent open, or if the vent under the windshield is full of leaves, it could cause rainwater to flow into the floorboard.


Why won't windows work on a Mercedes 1982 380SL?

Check your fuses under the hood.


Location of fusebox 84 380sl Mercedes?

under glove box by passenger floor mat


Water dripping under dash board that is not antifreeze 2005 Chevy cobalt?

It may be condensation from your air conditioner condenser. The drain tube may be plugged causing water to back up and leak from under the dash. A windshield leak may also cause your problem.


Why is water leaking from under dashboard on the drivers side in a 2000 Subaru?

your windshield seal has failed


Where is the fuel pump on 1983 Mercedes Benz 380SL?

Fuel pump is under right rear of body


Where is the fuse box on a1984 380sl located?

passenger side, on side wall under glove box to the right.


In Florida if a windshield seal is broken and leaks is it covered under the windshield law?

No, if a windshield seal is broken and leaks, it is not covered under the windshield law in Florida. You must have a cracked or broken windshield in order to be covered in this instance.


Where is the engine computer in a 1992 1 ton Dodge van?

Under the hood, mounted under the windshield on the center of the firewall.Under the hood, mounted under the windshield on the center of the firewall.


Where is the fuel filter on a Mercedes-Benz 380SL?

It's located under the car next to the fuel pump next to axle