98' B4000 Everything Under Driver Side Moist / Wet Like a HOT Shower....

[ndccpf1]

Recent week of heavy rains then over-night all neighborhood cars and lawns frozen frost.
After lunch temps raised and noticed the entire under dash area was moist and wet. Every surface and area. Carpet on driver side did not feel wet

It looked like if you close the bathroom door and take a HOT shower...
Windshield had been replaced a few years ago.

Assume there is a leak in drivers area and the moisture evaporates upward. Antifreeze level on the mark and does not show low

Thoughts ?

 

[Dirtman]

Third brake light would be first thing to check, they are notorious for leaks. I know it seems odd but the channel from the third brake light funnels water down to the front floorboards.

 

[ndccpf1]

Interesting for that interior routing! I have in the past sealed the 3rd brake-light fitting due to the notorious leaks.

I will do a re-seal again.

Thank you.

 

[Colin]

I needed to reseal my rear window because some meathead in the past used etc instead of butyl tape.
Also check that all the grommets in the firewall and sides are secure

 

[Infamousmazda]

The rubber for the front windshield could be it..... If you just run a water hose on your roof and check right on the edge of your headliner. Mine is a 94 thats how I found the leak. It was barely getting the front edge of my headliner damp and the rest was running down a pillars to the carpet. And the windshield seal didnt even look bad. I guess was very finely dry rotted.........just worth checking I think...