water leaking in cabin

[matuva]

IIRC, we are several experiencing water leak on passenger side when heavy raining.
That what happens to mine... water seems to drip from behind the fan housing (black box below the glove box), but I can't find the path and don't understand from where it is coming.:mad2:
Sometimes, when start the A/C, I can even clearly hear the turbin throwing water inside the housing.

Any of you have solved this problem ?

 

[DieselCash]

I have had one water leak in my years.

The gasket our seal that holds the windshield in place was rotten. In the bad spot when it rained heavily, would leak water bad!

 

[Woody35]

i think some one put RTV seal on the windshield and it sealed the leak on here. it hasnt happened tome but it seems like a common problem

 

[HighSierra86]

Windshield would be my best guess. The only windshield that dosent leak, is an original one. Every replacement ive ever had, on ANY truck (except our cabovers) leaks. Pisses me off. Clear caulk is your best friend in this situation.

Watch for a buildup of tree seedings, leaves, etc in the cowling or other places they shouldnt be. They can divert water to areas that would normally be dry.

 

[HighSierra86]

By the way matuva, sweet looking truck!!

 

[matuva]

By the way matuva, sweet looking truck!!

Thanks
Half is often laughing at me saying I'm like a kid with his favorite toy :rolleyes5:

I will seal the wind shield gasket, wasn't thinking about that.
Should I better use RTV or caulk ?

Sun is striking almost strong here and the sealant must resist to it .....

 

[Joey D]

Make sure all the trim screws are in the base of the windshield on the colw plate, I had a windshield put in and they forgot one screw and it leaked where yours is leaking.

 

[diesel65]

As what Joey said, you need to check the trim screws on the cowl. There is one screw hidden under the cowl trim piece that also covers the hood hinge on the right side that is directly over the air intake for the HVAC system.
To seal it I just used a piece of butyl rubber tape, take the screw out put a piece of butyl over the hole and reinstall the screw.
I had the same problem years ago, only I found out when the cab was filled with smoke from a burnt blower motor. This happened in the winter and the blower cage was locked by ice. At that time the truck wasn't a daily driver, so I didn't notice a leak.

 

[HighSierra86]

Thanks
Half is often laughing at me saying I'm like a kid with his favorite toy :rolleyes5:

I will seal the wind shield gasket, wasn't thinking about that.
Should I better use RTV or caulk ?

Sun is striking almost strong here and the sealant must resist to it .....

Ive had good luck with a clear caulk and a blade to keep it off the paint. But before you go crazy with the caulk gun, id check the above mentioned screws. I might go check mine myself!

 

[Matt Bachand]

I thought they used a special type of adhesive made for the application... I remember hearing a story about a guy woulnd't put a mustang on an open trailer because they guy used silicone instead of the proper adhesive... look into it.

 

[qwomack]

I believe the AC condensate drain is in that location as well. You might want to make sure it isn't plugged up.

 

[SnowDrift]

I'm not sure I agree with the silicone approach. Our windshields are an integral part of the cab structure. I'll explain what I mean, assuming the windshield is, indeed, the leak point.

Ours are installed with black urethane or something like that in a triangular shaped bead, specifically. Once installed, there is a literal trough around the entire window for a channel for water to run. This allows drainage and also allows air to move for drying. If it gets caulked shut, the water won't drain properly and in time could cause the leaking area to rust, which, in turn weakens the windshield area.

The silicone could be a quick fix, but I think the only long term solution is to remove the windshield and reinstall by a reputable installer. I had one installed by a guy who I learned (after the install was complete) only had about 6 months experience. It leaked horribly and I had it redone by a guy that had done nothing but auto glass for his whole life. It doesn't leak now.

 

[guybb3]

Watch for a buildup of tree seedings, leaves, etc in the cowling or other places they shouldnt be. They can divert water to areas that would normally be dry.

Good point, often overlooked.