A damp carpet or water on floor passenger side situation can be caused by a plugged ac condensate drain line a leaking heater core leaking windshield seal a problem with sunroof drains or water ingestion from the fresh air intake on your car s hvac system.
Water on passenger floorboard.
Air is then blown over the heater core by the blower motor when the heater is on to heat the passenger compartment.
This is the first place to start the investigation when you see car leaking water on passenger side.
It was definitely water and do not think it came in from the window or door seals b c the door was dry and rug area near lip of door was dry.
Water on floor passenger side diagnose and fix water on floor passenger side.
Water is circulated into the passenger compartment through the heater core.
Water leak on passenger floorboard also an ac problem.
The cooling system of the engine.
If this core develops a leak it will usually leak into the passenger compartment floorboard.
The cooling system is highly pressurized so even a small leak can force the antifreeze to come out.
The heater core is heated by the engine coolant.
Posted on oct 10 2009.