Water drips onto carpet on passengers side front foot area. Can be seen dripping from plastic air ducting above foot area. how to figure out how its getting in. Have replaced windshield.

You did not indicate what sort of climate you live in or exactly where the carpet in the cabin was most wet...

However, the most common source of water inside a car is a clogged HVAC (heating, ventilation, and air conditioning) drain tube. This tube provides drainage for water condensing on the AC evaporator and any water that enters the HVAC system during rain storms. If the tube is clogged with dirt and debris the water drips from underneath the dash where the heat vents are ... onto the floor instead of dripping onto the road. So usually the wettest place on the carpet is the front passenger foot well.

The drain tube is generally located on the firewall, low on the passenger side. You would probably have to raise the car to see/reach it. I am not sure exactly where the Passport one is ... they can be hard to find at times.

Other possible sources of water are a clogged sunroof drain tube, leaking window seals, torn or missing door seals, and clogged door drain holes.

Also ... buildup of debris (pine needles/leaves) where the windshield wipers retract in to can also block those drains which can sometimes cause overflow into the passenger compartment.

After you find and eliminate the source of the water you will have to lift the carpet and remove the padding underneath in order to dry it. The padding holds water like a sponge and will not dry unless it is removed from the vehicle. Shop vacs won't get the water out of the padding. Even if the carpet feels dry the padding underneath may still be wet, and that is where mold and mildew grows.

Helpful?

Good luck on your troubleshooting

You will need to check where the liquid is coming from, It may be anything from Air Con, Fuel, Transmission Fluid etc..

The fact you smell burning plastic could be 3 things..

1, Brake pads could smell and burn down if they are on too tight (Had this problem with a trailer). Hence when you apply the brakes it could be squirting brake fluid out due to too much pressure.
- Check brake fluid

2, If the smell and liquid is inside the car (front pass side) it could be the air ducts. Under the dashboard you have air ducts etc for the fans and in car cooling (brother had issue with this)

3, Whatever the fluid is, it could possibly drip onto something hot, unusual for liquid to smell like plastic though, Auto transmission oil smells like fish.

Best bet would be the brakes. Next time you smell it just smell in the wheel mag and see if you can smell it, check the engine fluids often and dont use A/C (Air Con) as that does drip fluid (normal). If it is the brakes smelling you will need to have the lines bled out, tyre places may be able to do this, and possibly new brake pads

Good luck

Yes, The air conditioner evaporator core inside the vehicle is very cold when the a/c is operating and moisture will condense on the outside of it, especially on a humid day. This moisture then trickles down the sides of the core and collects in the plastic housing beneath the core where it then escapes through the evaporator housing drain tube and drips on the ground beneath the passenger side of the chassis. The more humidity in the air the more moisture you will see dripping onto the ground. If the little drip hose should ever get plugged up this water then will overflow the housing and drip on the passenger side carpet so if you ever have that problem you'll know what the cause is.

Check the drain hoses. If you are getting water inside the cabin, namely on the passenger side, then you have a clogged or crimped drain hose.

Feel around the passenger side front foot well for wet carpet. Inspect all the hoses and drain plugs to make sure you remove the clog.

water dripping from under the glove box area is usally a sign of water in the heating ducts. water runs down the windshield and goes under the cowel, then instead of draining, it some how enters the air intake for your heating system. Take off your wipers, and remove your cowel, you will be able to see the air intake (on the passangers side) and the reason why the water is being directed into it.

There should also be a drain tube or hole below duct work on outside of firewall or maybe even lower.

probably water that came in from the outside cabin air intake underneath the windshield and its running through the vent system draining out through the floor vents. run the blower on medium or high speed to help dry it out.

clean the outlet pipe out,should be hanging down around passenger side ,most likely full of leaves or mud

Ok take off the windshield wiper arms, then remove the plastic piece under the wipers below the windshield, there is a tray under there and some drain holes, you may have to remove some more plastic pieces once you remove the one below the windshield (some models are slightly different) clear out all the tree leaves and pine needles and such from the tray there are drain holes in the enter, and on each end push a long flexable rod down carefully or compressed air really works the best this is you problem it needs to be done every few years or more often if you park under trees.
If this information is helpful please give me a fixya! Rating , Thank you, Randy
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www.aceautomotive1.com

what i did was i got a 1/4" drill bit and made to holes under the carpet were the water was and have no problems with it. first pick the carpet up to see were its coming from it should be coming from the back of the gas pedal