Re: water dripping on passenger floor from evaporator
Yea a clog drip line would most times be the problem. take it to your mechanic or even you can do it yourself. just go with an air gun and blow compress air into the drip line located passenger side firewall under the hood
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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.
SOUNDS LIKE YOUR A/C EVAPORATOR DRAIN IS PLUGGED. WHEN YOUR DRIVING THE EVAPORATOR WILL COLLECT CONDENSATION AND THEN DRIP OUT OF THE DRAIN. THE DRAIN IS LOCATED NEAR THE FIREWALL ON THE PASSENGER SIDE OF THE VEHICLE. SOMETIMES LEAVES OR MOLD/MILDEW WILL COLLECT THERE SIMPLY SHOVING A COAT HANGER END OR SCREWDRIVER WILL UN CLOG IT AND ALLOW THE WATER TO DRAIN.
You can only have 2 issues dripping water onto the passenger floor board. First being a clogged drip line for the ac evaporator. The other is a leaking heater core. Figuring out which one is the issue is fairly easy.
If your vehicle has anti freeze in it when you turn the defrosters on it will smell sweet. If it does you have a leaking heater core. If it does not then the drip line is clogged.
To clear the drip line get under the vehicle and snake the drip line on the firewall. It usually is a 90 degree rubber or plastic piece on the passenger side about a third of the way up the firewall. A leaking heater core means it has to be replaced and not really a job for someone that is not exsperienced.
If you are referring to water dripping under the car as long as it is only when A/c is on and the water feels cold..this is normal. The drain tube is located on the bottom of the evaporator case and most cars will drip wated from that tube. Sometimes if that tube gets clogged up, you will actually have water leaking into the car on the passenger side floor.
condensation builds on the evaporator coils and fins. they drip into a pan and drain through a hole in the pan, and down a tube to the outside. that's why you see water dripping on the under side of your car on the passenger side. the tube or hole is most likely clogged
The problem is with the evaporator drain. There is a, (usually soft flexable), tube that drains condensation from the evaporator to the outside. It is located in the passenger compartment, under the dash. The hose has, (A)-became disconnected from the evaporator. (B)- Has gotten a kink in it. (C)-Became clogged, causing the evaporator to overflow into your passenger floorboard. Your vehicle probably has some covers over these components, you will likely have to remove. Locate the hose, it typically drains just behind and inside your right front wheel. It may be concealed behind a kick panel, or may go thru the floor or firewall. You must find it and follow it to the evaporator and make sure it is not clogged or kinked and is properly connected to the evaporator.