Question about 2002 Cadillac Deville

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Passenger floorboard front and rear soaking wet ,youcan see the water running down from behind the dash when the ac is on

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You have a clogged A/C drain.... may have to put the car on a lift and check for a black soft rubber hose with a pinched off looking end around the base of the fire wall, once found clear out the debris with a wire or cut the pinch design of the hose off and watch the water come flying out.
If the water is of the coolant coloration inside the car you have a leaking heater core...advice is to have this done by the pros it is a major headache for a first timer.

Posted on Aug 01, 2010

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Posted on Jan 02, 2017

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2 Answers

Water is running under my dash onto floorboard in my 2007 dodge caliber after it rains. Where is the water comming from


You need to find the conduits for rain - one of them has a leak in it probably from corrosion. Try to locate just where the water is getting in and see if you can use a sealer to stop the water from getting in.

I would remove the glove box and anything else in the way and look for the source when hosing down the car.

Nov 22, 2015 | 2007 Dodge Caliber SXT Sport Hatchback

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Would the A/C cause water on rear passenger floorboard


Usually if the drain tube for the AC is plugged the front passenger floor gets wet, not the rear.

Sep 10, 2012 | 1993 Ford Crown Victoria

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Water leak after rain, rear floorboards soaked? HELP!


a couple things to look at if it has a sunroof the sun roof would have drain hoses that run down in each corner next you need to look at the cowl this is the section in front of the windshield that has a drain on it as well if you find nothing there the next step would be to remove the seats and carpet and sit in the car while running water over it either way you should remove the carpet and make sure it is dry all the way threw or mold will start to grow and you will never get ride of it not good for your heath other key spots to look at is if the windshield was ever replaced it could be a poor seal

Jun 14, 2012 | 2008 Toyota Corolla

1 Answer

Passenger floorboard wet when running ac


no it will most likely be a blocked drain pipe that goes into the engine bay from the A/C and drains the condensation created by your car's air conditioner. A mechanic workshop can do a blast of compressed air by your mechanic and free the blockage takes about 30 seconds to do with a car hoist.
If it is humid conditions the problem will be much more and you might find the front demister won't work due to water sitting on top of the Air conditioner. It will heat this water and blow steam on your window.

Feb 26, 2018 | 2006 Jeep Commander

1 Answer

I just found my floormats and floorboard soaking wet, can you explain?


on the passenger side? if it is the passenger side is your heat exchanger carrying the coolant that is used to regulate the cabin temperature. it is under the dash. Usually what happens is that the condenser (heat exchanger) the drain hose coming thru the firewall inside the engine compartment (passenger side) clogs not letting drain the water removed from the cabin during the AC cooling process. then the water start to bleed thru the joints of the box enclosing the heat exchanger. the solution is to blow or vacuum the protruding drain hose to clear the water path.

Now if the soaking carpet smell like coolant the problem is different.

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When it rains puddles of water on the passenger side floorboards mostly in the back not coming from sunroof and theres a crack in my windshield thought it might be that but the dashboard is never wet so...


The cowl drains could be clogged. Trace from the opening at the base of the windshield down to door hinges and look for debris such as leaves in the opening behind the hinges. You may have to use a coat hanger as a special tool to remove the debris.

Oct 10, 2017 | Cadillac Catera Cars & Trucks

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The passenger side floorboard gets wet =


is it only when the ac is on? there is a pan under the ac unit that has a hole in it to allow the condensation to empty. if that hole gets plugged it could cause the condensation to build up and back into the inside of that car. i unplugged mine and floor stayed dry

Jun 03, 2010 | 2005 Chrysler Town & Country

1 Answer

Grand prix front passenger floorboard gets wet


You could have a leaking windshield seal, and its running down the inside of the dash and onto the mat. Has the windshield been replaced?

Aug 13, 2009 | 2004 Pontiac Grand Prix

1 Answer

Rear floorboard behind driver set wet after rain


do you have a sun roof, if so start there, because there are two hoses at the back corners of the roof pan that allow water to drain, if they leak, they will soak the rear floorboards, and if not that check the door jam seals.(note that if the plugs on the floor are missing that will be verry hard not to have wet carpet)........let me know?

Mar 24, 2009 | 1998 Buick Regal

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