2005 Chrysler Pacifica-Air conditioning leak

It is not the Air Conditioning leaking... It is your Heater Core that is a hole, check your Coolant System to see if it is low and then you have your answer.

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!

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

The new filter will not change the smell or filter smoke or much else. Just picks up outside dust,sort of.
May be under wiper cover/air intake cover. Open hood and check that out,on pass side.

liquid on passenger floor is most likely your heater core needs replaced

Sounds like your air conditioner drain is stopped up. Shouldn't this vehicle still be under warranty?

Since it can't be engine or transmission oil, the thing I would check for first is to see if it is leaking under the dash from the oil in the air conditioning unit. You might check to see if that system is cooling properly.

The drain from the a/c under the dash is plugged up and needs to be cleared. If you check from under the vehicle, u should be able to find the end of the drain tube on the passenger side, behind or near the front wheel. Carefully run a wire up the tube to dislodge the obstruction (goop build up). You can also use compressed air.

I believe the problem is a leak in your heater core. The water would run down the inside of the firewall or near it thus running under the mat.