Water leaking in cab - Dodge Diesel - Diesel Truck Resource Forums



2nd Gen. Dodge Ram - No Drivetrain Discussion for all Dodge Rams from 1994 through 2002. Please, no engine or drivetrain discussion.

Water leaking in cab

Reply
 
 
 
Thread Tools Search this Thread
Old 11-20-2017, 08:14 AM   #1  
Registered User
Thread Starter
 
seahawkdodge's Avatar
 
Join Date: Nov 2005
Location: Oak Harbor, WA
Posts: 225
Water leaking in cab

I have tried searching the internet for more ideas as to where this leak is coming from, but I am out of ideas.

Water is leaking into the passenger side of the cab, when it rains. I have resealed the windshield and all of the weatherstripping around the door. Water is dripping from the far right edge of the dash, and it seems to be coming from under the dash somewhere.
I can't physically see where the source is, but it drains down the metal brackets under the dash, to the right of the glove box, and drips from the far right corner of the dash (right by the kick panel).

It is not coming from the heater core, it is physically dripping from the underside of the dash.

The heater core drain is not clogged. I have resealed the third brake light as well.

The headliner is not damp.

I pulled the A-pillar panel, nothing seems to be draining down from inside of it or the A pillar itself.

Where the hell is it coming from?
seahawkdodge is offline   Reply With Quote
Old 11-20-2017, 08:50 AM   #2  
Admin Team Leader
 
Lary Ellis (Top)'s Avatar
 
Join Date: May 2002
Posts: 15,395
Very common issue in these trucks is for the third brake light seal to go bad and the water then runs down the inside edge of the A-pillar and end up on the passenger floor.

Try sealing it up it helped my 96 with a similar issue. The only way I could tell was after pulling the third brake light there was a piece of foam rubber wrapped around the plug and it was soaked with water.
Lary Ellis (Top) is offline   Reply With Quote
The Following 2 Users Say Thank You to Lary Ellis (Top) For This Useful Post:
nothingbutdarts (11-22-2017), Rsquared28 (03-30-2018)
Old 11-20-2017, 09:19 AM   #3  
Administrator
 
Join Date: Jan 2007
Location: Streator Illinois
Posts: 8,316
Quote:
Originally Posted by Lary Ellis (Top) View Post
Very common issue in these trucks is for the third brake light seal to go bad and the water then runs down the inside edge of the A-pillar and end up on the passenger floor.

Try sealing it up it helped my 96 with a similar issue. The only way I could tell was after pulling the third brake light there was a piece of foam rubber wrapped around the plug and it was soaked with water.
What Lary said, I ended up having to use clear silicone on my old rotted gasket to finally get it to seal. Not sure they sell the gasket any longer and I didn't want to make a new one.
patdaly is offline   Reply With Quote
Old 11-20-2017, 12:57 PM   #4  
Registered User
Thread Starter
 
seahawkdodge's Avatar
 
Join Date: Nov 2005
Location: Oak Harbor, WA
Posts: 225
I will double check it, but I RTVd the third brake light this past weekend. Then it rained and started leaking into the cab again.
seahawkdodge is offline   Reply With Quote
Old 11-20-2017, 03:27 PM   #5  
Registered User
 
SIXSLUG's Avatar
 
Join Date: May 2006
Location: Pacific NW, B'ham, Kalispell MT
Posts: 5,039
My work truck is doing this also and its driving me mad trying to find the leak,,,sealed 3rd brake light, had windshield replaced, caulked body seam under wipers...all door seals good and dry underneath.
SIXSLUG is offline   Reply With Quote
Old 11-20-2017, 03:54 PM   #6  
Registered User
Thread Starter
 
seahawkdodge's Avatar
 
Join Date: Nov 2005
Location: Oak Harbor, WA
Posts: 225
Pulled the third brake light, it was not leaking.

What body seam under the wipers are you referring to?
seahawkdodge is offline   Reply With Quote
Old 11-21-2017, 04:17 PM   #7  
Registered User
 
Join Date: Aug 2007
Location: Edmonton, Alberta
Posts: 3,893
If all you say is correct and the upper brake light is not leaking and you have no clearance lights on the cab and your heater drain for the evaporator is not plugged for sure.. then I suspect the inlet baffle is cracked or not sealed properly. The inlet baffle is what protrudes through the top of the firewall and where the heater plenum mates up to over by the recirc door. You can try pouring water into the mesh between the hood and the windshield. HVAC plenum would have to be dropped but not removed to get to it for removal.
Busboy is offline   Reply With Quote
Old 11-24-2017, 11:27 AM   #8  
Registered User
 
SIXSLUG's Avatar
 
Join Date: May 2006
Location: Pacific NW, B'ham, Kalispell MT
Posts: 5,039
Sorry, my work truck is an 07 F-150. Just the same, I have taken this further than I had to when my 3rd brake light was leaking on the Dodge, which fixed the issue back then.

IF you have been running the defrost hard lately, I would re check the hvac drain hole, its a pia but could be running condensate into the cab.....
SIXSLUG is offline   Reply With Quote
Old 11-25-2017, 09:42 AM   #9  
Registered User
Thread Starter
 
seahawkdodge's Avatar
 
Join Date: Nov 2005
Location: Oak Harbor, WA
Posts: 225
Anyone have any pictures of how the cowl inlet is supposed to look? I can remove the cover and seal what needs sealing, but I don't want to seal something that needs to drain.
seahawkdodge is offline   Reply With Quote
Old 12-21-2017, 07:04 AM   #10  
Registered User
 
Join Date: Feb 2013
Posts: 87
On mine the drain designed to allow rainwater to flow through the cowl area was plugged up. I removed the cowl screen and cleaned it out. It literally looked like potting soil. And lots of it, too.
pipefitter is offline   Reply With Quote
Old 12-28-2017, 10:12 PM   #11  
Registered User
 
SIXSLUG's Avatar
 
Join Date: May 2006
Location: Pacific NW, B'ham, Kalispell MT
Posts: 5,039
My work truck leak ended up being decayed windshield alignment tab washers. The F-150 have one at each lower corner with a thin foam washer that decays and fails after about 10 years and lets water draw into the cab, down the firewall and onto the floor, behind the mat..

Not sure if the Dodge brothers did this on our rigs, but maybe worth a look...
SIXSLUG is offline   Reply With Quote
Old 03-30-2018, 02:57 PM   #12  
Registered User
 
Join Date: Nov 2005
Location: West Sacramento
Posts: 33
Good input on this thread. Thanks everybody.
On my truck, I have streaks of dried water running down the inside of my back window. One more place to look.
Eventually I will have a glass shop pull that window out and replace the seal.
Rsquared28 is offline   Reply With Quote
Old 05-14-2018, 11:34 AM   #13  
Registered User
 
Join Date: Jan 2017
Posts: 3
FYI on replacing back glass. I busted mine out with a pc of firewood and had it replaced with a Factory (3 panel) and it leaked. They said it was leaking from the frame and was a manufacturing defect. They asked them to send another one and it had the same exact problem and they refused to put the 3panel back in from factory. Left me with two choices, an aftermarket which didn't mount flush like factory one does, or go with a flush mounted solid back glass. I opted for the flush, solid, and I LOVE it. Ruled out the actually sliding rail leaks and then I resealed the 3rd brake light at same time just in case. Had it tinted and it look great except for a really crappy tint job from shop I had do it.
woodtrucker is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Water leaking into cab 88 dodge rams2500 1st Gen. Ram - All Topics 3 12-27-2008 10:34 PM
A/C Evaporator Water Leaking Into Cab CoastalDav 2nd Gen. Dodge Ram - No Drivetrain 15 09-07-2008 10:49 AM
Water leaking into cab under glovebox wlew 3rd Generation Ram - Non Drivetrain - All Years 6 08-27-2007 12:18 AM
Water leaking into the cab in front dssimecek 2nd Gen. Dodge Ram - No Drivetrain 0 01-24-2007 11:58 PM
Water leaking into cab!!! papaglock 2nd Gen. Dodge Ram - No Drivetrain 8 04-14-2006 07:02 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 03:34 AM.


Copyright 2017, DieselTruckResource.com
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.