On my 1999 Sahara it was coming in from the fresh air vent and also behind the battery is the housing for the air intake fan, the seal at the bottom was leaking water in through the firewall and passenger floor. $6 black all weather silicone and I'm back in the water w/out leaks. For the air intake vent remove the cowl ( where the wiper motor is located and remove the air cover, you can replace the seal, I just made my own gasket with the silicone, reinstalled and resealed. For the fan housing I had to remove the battery and sealed the exposed seams between the plastic housing and metal firewall the original seal became porous and water would just leak in. Cost $6 and about 2hr of work. When removing the battery I found it easier to lift one end and insert a rope make a handle around the 4 sides to pull it up easier.
maybe your radiator is broken and you need to get a new one or just get a reparation if the radiator starts leaking when is in use it may be leaking because of the pressure of the water.
2 possibilities.....1 your ac evaporator drain is plugged and needs to be cleaned out. 2 if it is coolant your heater core his leaking.
If you have your air conditioning running it is the moisture that is pulled out of the air when it is being cooled. That water is then expelled outside of the car
There are hoses, gaskets amd water pump which cause leaking. Check it out where the coolant is comming from.. The speed sensor is probablu bad.
NO NO, That would be a intake gasket leaking, not a head gasket. You also should check where the heater hose hooks up on the intake, it may be leaking.
Hose leaking Water pump leaking
If it is water it is probably the condensation drain plugged up with crud. If it is engine coolant it is probably the heater core leaking.
If it's just plain water leaving a little puddle under your vehicle it would be condensation from your air conditioning if it has been running.
If you mean "Why would the rear A/C be leaking water?" then the answer is condensation. There is a plastic catch pan under the rear A/C evaperator that all of the condensing water is supposed to be caught in then funneled out of the cab through a hose that runs inside the trim of the back pillar, to be dumped on the ground under the rear wheel. If there is a crack in the catch pan, or a clog in the hose, the result will be brackish water leaking into the interior. If you mean "Why would the rear A/C be leaking refrigerant" then the answer is a broken refrigerant line in the rear A/C unit.
Assuming you mean under the front of the car, the water pump, hoses or radiator could be at fault.
Perhaps water pump is leaking?
It can be one of 3 things. My first guess would be a leaking heater core considering the area where it is leaking. Are you sure this is water and not coolant. If it tastes sweet or is slick to the touch, it is coolant and you have a leaking heater core that must be replaced. Secondly it can be the windshield seal that is leaking. And 3rd it may be that the drain holes below the windshield cowl are stopped up allowing water to enter the passenger compartment.