Found a lot of water in the passengers side floor carpet and pan. No rain, so isolated it to the AC.

Found the drain stub and stuck 9 inches of coat hanger up there and got good flow of water when AC is on full. This was in an improvement since I had not seen anything coming out and knew it might be a problem.

Pulled back the carpet and backing and let it dry out for 2 days and found that there is still some water coming down the back fire wall onto the floor from somewhere.

Not a lot but enough to soak a hand towel. I did not see the right answers in the forum search so I hope someone can give me 2-3 things I can do on my own to remedy, seal, replace, caulk or what ever I will need to do to stop the liquid.

I am also not familiar with this area of the truck, so go easy and go slow on instructions.

 

You might want to check the drain tube itself to see if it is cracked or split, it could still drain correctly being cracked but will leak into the people compartment....

might also try flooding the front cowling with water to make sure its not a windshield leak or leak coming from the AC air intake...

 

ok, finally got some time today. Ran the water test and everything dry.

Used compressed air on the drain tube and getting a flow, but not great. Still leaking inside........... so whats the step by step to find and replace the drain tube and inspect for other defects ???

 

Have you had to add any coolant to the radiator overflow tank ? If so, I suspect HEATER CORE LEAK, especially on the r/front floor. JMHO,
David g.

 

Without seeing exactly what you are seeing its hard to say, but its my guess you are going to need to get a peek inside the box, I suspect that algae and fine dirt have built up to make a cement if you will, that has blocked the drain and now the condensate is finding other ways to exit...
Try removing the blower motor and see if you can feel where the drain tube is...

 

Ok got deep into it last night.
Removed the blower motor and all good there, but took the moment to reach in and clean all the debris around the fins of the evaporator and give it a shot of green clean and hit it with the hose to clean it. Great flow of water coming out the bottom of the car and nice and clean in there. At the angle I was at, I could not get my hand all the way down to the tube but when reconnected, did improve the air flow nicely in the cabin.
Removed the pan on the heating core for inspection. Perfectly clean, like the day it was installed. The heating core looks brand new with no wetness or leaking,,,,, so lets check that off the list.


Went back to where the two coolant lines exit the fire wall. There is a foam cover around it that is wet and when squeezed releases water. Giggle it around and I can get some water drops.
So.... is the tube broke between the evaporator housing and the firewall? Am I able to use some weather seal or silicone around the tubes and that assembly and stop the leaks? Can I assess the evaporator box and seal around the tube where it exits to the firewall? I have not actually seen the back of the housing against the firewall so I don't know what I am looking at.


Any suggestions here??

 

You can go to YouTube for explanation of connectors. There is a plastic connector @ the intake manifold on the right front heater hose that goes to the heater core. There may be as many as 4 of them anywhere there is a connection @ the heater hoses. JMHO & Good luck.
David g.