2nd Gen Non-Engine/Transmission Damn Water Leak!!!

[Cummins360]

I posted a wile back with a problem, every time it would rain my interior would flood, I fixed most of the leaks:

Rear window

High Mount Brake Light

A/C Drain

So one would think I fixed the problem right..... WRONG we had a big storm here last night and it RAINED ALOT but I am actually impressed out of all the rain all I had was a small leak.

It is by the drivers side door on the bottom where the plastic trim meets the carpet (threshold I guess) But if out of all that rain only a small amount got into the cab it is hard to tell where it came from. Could it be running down inside the u-channel of the weather stripping?? That is about all I can think could be leaking still. And it wasnt comming from under the carpet because the padding wasnt wet, only the carpeting on top.

Someone Please Help Me because I am about to blow a fuse panel with all the water leaks this damn truck has had!!

 

[RacinDuallie]

How are the door seals? still puffy or flattened out?

 

[JNailor]

I had a leak similar to that a few years back. It took me a long time to find it. I noticed a drop running down from the bottom of the door panel to the bottom of the door inside of the weatherstripping. My carpet got wet under the floor mat. Upon removal of the door panel I found that the plastic shield came unglued from the door metal and allowed water to seep behind the door panel instead of staying inside the door cavity and draining out the slots in the bottom of the door. The slots drain outside of the rubber gasket. The plastic has to be completely glued to the door metal along the bottom of the opening where the window regulator goes in. Hope this helps, leaks can be a PITA!

 

[Joe Mc]

To check door seals run the fan on high max A/C (don't have to have engine running), then close all windows and doors. If there's a seal leak you can find it by sprinkling baby powder or, if you have a smoke sprayer, around all joints and look for the area that moves the most powder/smoke. Other than that if could be along the plastic thresholds - remove them and have someone spray the outside cab roof while you explore from inside.

 

[wcjp]

One of the leaks on my 96' was associated with the windshield. Added some sealant to the driver's side of the winshield.

 

[JoeBioDiesel]

I used to fix all the water leaks that came into the shop when I was wrenching for a living. I recommend you remove the door sill plates, roll the carpeting away from the edges of the inside, get inside and water test it with a hose. You'll eventually see where it's coming in. No need to get crazy with high water pressure, and be patient waiting for it to show up. Sometimes it takes a couple of minutes to appear.

Also, water rarely comes inside without leaving a trail. You might see the tracks of dust left behind as soon as you move the carpeting back.

Lastly, make sure you completely dry the underside of the carpeting to avoid it stinking later.



Good luck,

Joe