I have the same problem and was told I needed a different drain plug. Seems like a design flaw to me and Dodge should pay for it. Haven't picked up the new drain plug yet to see if that solves my problem. Let me know if un-plugging solves your problem, I will try that as well.
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Re: 2003 dakota 4.7l
Sorry so late.The drain hose is under the truck.If you stand in front of the truck it will be on the passenger side behind the front wheel and about a foot to the right.You will have to get under the truck and look up,it will be a black rubber hose.If you dont have an air compressor,use a coat hanger and snake it through the hose.
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Could be the drain for the ac is plugged up. Usually when this happens the passenger side floor gets wet, but it could be coming out on the driver's side when you take a right turn. The drain should be on the bottom of the firewall near the floor, you should see water dripping onto the ground when the ac is on.
If you've been using your air conditioner during this time, and it hasn't rained at all, then the small drain at the bottom of the a/c evaporator core may be plugged. When you use the a/c to cool the car the evaporator coil [located next to the heater core in the ductwork under the dash] is very cold and moisture from the hot humid air condenses on it as a result. This condensation dribbles down the core and accumulates in the plastic housing under it where it should then drain out a small hole and drip onto the ground. If the small drain gets plugged, which happens quite often, then the water fills up the housing until it overflows and then runs out and soaks the carpet on the front passenger side. The drain is located on the engine side of the firewall, passenger side, down low where the firewall begins to curve under. Usually a puff of air will clear the clog and the drain will work fine again. If the carpet is really wet it would be a good idea to remove it and get everything dry again as it tends to get pretty smelly if left wet. One last note: usually a leaky a/c unit will only make the passenger side carpet wet unless it's been leaking for a long time while a leaky windshield seal can make both sides wet depending on where it is leaking. Good luck, hope this helps you out!
That sounds like the AC condensation drain tube/hose is plugged up.
The AC evaporator/core condensation drain tube is located on the passenger side of the fire-wall towards the bottom of the fire-wall, (it resembles a heater hose that is coming off from the fire-wall and it connects to nothing, and it is just to drain the AC condensation) and it is easily viewed from under the vehicle. Use long pipe cleaners folded in half to clean out the AC drain, and be very careful that the AC evaporator/core, or the heater core is not damaged from using any hard or sharp objects to clean out the AC drain.
Just had ours fixed, look on engine side of firewall, if the outlet pipe in passenger well is a 3/4 inch long pipe projecting forward into engine bay with no tubing leading down towards the ground, the problem is water comes out trickles back with pressure in engine bay to foam seal under the pipe and enters footwell inside car.
Take a piece of rubber tubing and hose clamp it on and direct it down towards ground in engine bay and the problem will be solved!
We have gone from soaking carpet to no leak at all with this simple fix.
I think that I can help you. It sounds like your drain-tube is plugged up. Get in the passenger side, and pull the carpet back from under the glove box. Look for a black rubber pipe that goes from a black box, and pokes thru the firewall, on the passenger side. Remove the hose from the box, and have a container ready to catch water. If water comes out of the black box, your drain hose is plugged up. Clean out the clog, and you will be golden.
Did you have the windshield replaced recently? This is typically caused by faulty installation of a windshield. Sometimes it can be fixed by adding windshield sealant (polyurethene, not silicone) where the windshield is adhered to the subframe - most likely along the bottom edge.
look at the firewall on the engine side and you will see a small stub hose coming out on passenger side about even with the bottom of the heater box inside. that hose drains condensation from the ac...clear it out and you will have a dry floor. (unless heater core is leaking but you didn't mention any overheat or coolant loss so likely that's not a problem)
You have drain blockage in the condesor case itself. There is a small tube that will drain the condensor case, the big black plastic case that contains most of your a/c system inside the car. This case collects moisture and that must drain normally from the case drain to the outside of your car onto the ground.. If this drain is plugged, you will have leakage on to the floor. If the moisture is allowed to remain in the carpet, mildew will set in and then you will have to replace the carpet.