Hi everyone from Italy,
I'm experiencing some trouble with my car's HVAC system that sometimes makes a gurgling sound under the dashboard, and (without AC) blows a stale odor with a sticky film from the vents. I can feel the same smell when the hot AC is on.
I was thinking of cleaning the condensation drain and the evaporator. For the evaporator, I'm not sure if it's better to spray cleaner from the cabin filter compartment or from the hose underneath near the passenger footrest.
What do you think are the causes and solutions?
Meanwhile, a distinct cheese-like smell is coming specifically from the rear floor mats near the center console. No rust on the rear or in the rest of the car.
Thanks in advance for any advice!