Usually this is caused by a leak in the seal around the windshield. The water then runs down the body behind the trim where you can't see it and pools on the floor. I had the same problem. I found that there is a foam strip on the cowl that was squashed. The foam being squashed allowed the water to run down the windshield under the cowl and into the blower housing, the housing then leaked onto the floor pan in 2 locations (corner and middle) by the firewall. A new foam strip will help, I also used a piece of body moulding on the metal lip above the air filter to divert any water. So far so good!
If it's the front passenger side ,I would say your heater core is leaking .
It fastens to a pass through stud at the passenger floor.
probably cause of bugs
The ac drain is plugged. The drain hose is on the firewall on the lower passenger side. ...that, or your heater core is leaking.
Leak in heater core
It could be the heater core leaking.
clogged or damaged catalytic converter
Heater core has failed.
most likely cause is your heater core leaking
Windshield seal? Lower door seal? Hole in floor ?
it is on the floor, passenger side under the heater unit The inertial fuel pump switch is located on the passenger side floor board, just at the edge of the carpet at the firewall, and just at the left edge of the transmission tunnel. It is black, about 3 inches by 3 inches with two wires exiting the bottom. No parts need to be removed to see it.
There is a basin underneath the plastic cover where the wipers are. It is on the passenger side. At the bottom of the basin, there is a hole that can easily get clogged with leaves. This basin will fill up and pour through your vent system and fill your passenger floor. All you have to do is remove the black cover and remove the debris..
You would have to build a platform for the tub to sit on. About 3 inches if you are using a floor drain. There is a trap right after the floor drain so you would not need one at the tub. If possible you could position the tub directly over the floor drain but that would eliminate the floor drain which would be a problem if the basement every flooded.
convert the 5'X6' to inches and you will have your answer
It could be a door seal or more likely the windshield is leaking.
Heater core may be leaking Door seal? Windshield seal?
Are you running the air conditioner? If the drain line is plugged, it will leak water (condensation) onto the passenger side floor.
If you have been running your air conditioner, it's possible that your drain hose is clogged, and the condensation is dripping in. It is also possible that you have a leak in the heater core or a windshield leak.
The Battery is located in the Floor board between the driver and passenger seats, you will have to remove the rubber floor to access it. Special tools you may need are on the passenger side in the floor, where the jack is.
Check the AC evaporator drain line...is it not connected to the outside
standard height is 36 inches and if there is available wall space you should put it as close to the sink or shower/tub as possible.
either convert the feet into inches or the inches into feet
Are you sure it's water? Sounds like your heater coil may be leaking...
Could be the heater core leaking Could be a bad windshield or door seal Don't forget a possible plugged A/C drain plug. Does this happen when running your a/c?? If you have a sun-roof, the drains could be plugged. If so, they will leak in bad weather, causing water to run down the passenger door post. If the rain is hard enough, it will soak the passenger floor mats. I took mine in to Toyota and asked them to clean the drains (because I could not find a post telling me where they are located).