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Discussion Starter #1
anyone have water leaking in the cab from rain while sitting? Mine leaks mainly while sitting in the driveway. I only notice water under the drivers side floormat and along the bottom trim piece going to the rear drivers side door. I really only notice dampness and mildew. I hoping there is a common leak point. It does not appear to be coming from the upper part of the door.
I'm thinking it's coming from under the engine cowl.
Any idea on where I should start looking?
 

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I haven't had that problem with my F250, but my prior truck was an F150 and that problem turned out to be the polymer glue around the windshield had debonded from the glass allowing water in behind the dash. In that truck it was dripping on the computer and causing glitches. The glass shop removed the trim around the windshield, sprayed a heavy coat of foaming glass cleaner around the outside of the windshield and then went around the inside of the windshield with an airgun. When they got to the leaky spot it blew the foaming glass cleaner all over the hood. The solution was to remove the windshield and rebond it. Unfortunately mine didn't survive the removal process, but the installation of the new one solved the leak.

Again, I don't know if this is a problem for the F250, but it was fairly common on the F150 and might be worth checking out.
 

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Discussion Starter #4
Dannyboy do you mean you had the water leaking by the windshield as well? or just leaking in general? I would not mind taking it to the glass shop and have them pull the windshield if this is a very likely cause. I might have to go out side on a rainy day and start looking for water.
 

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water leaks

i had a similar problem. water would leak inside and soak the underside of the passenger rug. it would flow in different directions. i was concerned about it causing electrical problems . i spent a full day looking for the leak. i found that the heater/ac blower housing was filled with water. you need to remove the blower fan from inside the engine compartment passenger side. once removed stick your hand inside.the bottom area should be dry if not the water is leaking from a fresh air duct right above the fan.you can stick your hand up into the cover. this slotted cover is placed over the hole for fresh air intake held in place with some type of sealant which dries out over time causing any rainwater to travel thru the cracks into housing and other places. if you determine that this is the problem you have to remove your wiper blade assembly then stick your arm from the drivers side to passenger side under the cowl, clean area around duct and apply a sealant where they seal. check it out.
 

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Fix this NOW before you have a computer problem. There have been posts on here of major nightmares and VERY costly repairs where water leaking in the same place yours is causing main computer problems. If you can't find it or don't want to do it, this is something that I would definitely say is worth paying the price of someone repairing it right to avoid this potential major breakdown. Good luck.
 

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As mentioned, save your GEM and other electrical items before the water does some real damage. Resealing the windshield, digging into the GEM / fusebox and sealing as best as you can, can help proect your truck from water damage. I had water leakage over my GEM, so I resealed the windshield, used electrical duct seal around te GEM / fusebox connectors and wiring harnesses. It is not pretty to look at, BUT, I manage to make the electrical connectors, wiring more water resistant. I know it is a pain to work under the dash, not a lot of room, but a couple of hours work, and no more leaks nor electrical issues (IE: dome light coming on by itself, horn honking at 3 A.M, and a wet carpet).

Butch Cassidy1
 

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IF you have holes drilled in your cab roof for lights on the cab, even the stock ones, check them too. Have seen lots of them leak and flow down the "A" pillars. Knew one guy who resealed this windshield three times, only to find out it was his wanna-be-trucker lights.
 

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Discussion Starter #9
Yikes! I did not realize this was such a big problem. I don't have cab lights and there does not seem to be any water on pass. side, so I think I will look closely at the windshield. Also, my truck sits in the driveway with the front end higher thaN the rear so this might make any leaks worse, with more water coming off the hood toward the windshield. Thanks
 

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1997 F-250 cab leaking water

Just my reply to all of the posts on the water problems. I had water coming in on the drivers side firewall soaking half the truck carpet. I eventually found the source. It was the cab to cowl seam up in the corner behind the computer. Seems the rain channels right down to that point and had the corner open up I guess. It could have been done during repairs? it was big enough to let quite a bit of water in. Also had to re-caulk the entire cowl inside across the top, the old stuff came off with a shop vac! Best thing to do is re-caulk every seal if you can.
 

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I just noticed this happening on my 2008. The water was first on my floor mat on the drivers side. Now I noticed that the headliner is wet by the trim handle. The water has traveled all the way to the back of the cab and the carpet is wet there also along the edge. I guess the water has run along the trim ridge. I was going to take it to the dealer and see what the issue is.
 
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