2001 Nissan Altima Q&A
2001 Nissan Altima Question: AC leaking water into front passenger floor..
The heater box is on the passenger side of the dash. Open the passenger door, kneeling in the passenger door opening look with a flash light at the bottom of the heater box there is usually a little black rubber hose that allows water caused by condensation on the evaporator to drain out into the engine compartment at the firewall. I suspect a passenger has inadvertently knocked of the hose from its attachment at the fire wall or heater box. - patrick mannion