Causes of a wet passenger side floor mat 1.
Passenger side floor board.
The evaporator core is also located in the same housing as the heater core.
Hot coolant flows from the engine where heat is absorbed and taken to the car s heater core when you turn on the heater.
A heater core that has only a pin hole sized leak may not be leaking on the floor but may produce a fine mist or oily film that collects on the inside of the windshield.
The heater core is like a small radiator.
A similar problem could occur with the car s heater system.
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 floor passenger side diagnose and fix water on floor passenger side.
File or grind off the barb on one of the ends apply a little silicone sealant then insert it into the drain plug about a half an inch.
Water leaking onto passenger side floor post by johnboy1975 27 jun 2019 01 44 i had the same problem water pouring into passenger footwell and even the rear footwell thought it was the sunroof til my climate fan blew.
Drain hose aimed downward to create negative air pressure.
The blower fan blows air over the heater core blowing heat.
If you are experiencing water on the passenger side floor of your car or truck and if it s not antifreeze 99 of the time it is a simple fix.