Water leak on driver's side floor

Paul...How did you get to the seam on the firewall? What did you have to take apart to get to it?

We had a 2003 BT Cruiser on a E450 Ford that had that same problem. Bought it brand new. Ford issued a TSB (Technical Service Bulletin). It was something about a leak through the firewall, but I cannot remember specifics. In any event, I fixed it myself with silicon caulk and it never leaked again. You might research TSBs from those years or find yourself a Ford Truck center mechanic old enough to remember. Those guys know a lot of stuff incidental to these peculiarities.

My best recollection was that it was where the firewall is attached to the sheet metal just below the windshield on the drivers side. The carpet on the drivers side would get wet in a heavy rain. I could never find it using the old flood it with the water hose trick. I suspect it had to be when driving and something to do with water being pushed up there some way from wind/speed/amount of rain.

Paul

On my 2010 Winnabago Aspect, on a Ford E-450 Chassis, I had a drivers side water leak. Dealer pulled back the carpet, and noticed that the factory had only sealed 1/2 of the steering column where it passed thru the floorboard. Simple fix - but seemed like a odd place for water to enter the vehicle.

donn0128 wrote:
Before you spend $$$ to try a fix, spend a few dollars on a seal test. This will 100% pinpoint where leaks are and can be fixed right.

Do they seal check the floorboards and front floor cabin area?

I assumed (seal test) that was the seals of RV and not the truck cab portion?


Although, you may be pointing out, water travels, and could be a leak over the cab and travel.

The explanation of water in wheel well inside, sounded like what I experienced.

Markiemark:C

Before you spend $$$ to try a fix, spend a few dollars on a seal test. This will 100% pinpoint where leaks are and can be fixed right.

I purchased a brand new Class C on Ford 450 chassis, last year.

Early on one of trips, driving through a really bad rain storm, our unit devloped a leak driver-side, into floor area.

What I noticed, was holes in the fender well (inside layer metal piece in the fender), allowing water to be splashed into engine compartment, which then works its way to firewall, then through some gaps into the cabin.

Since my unit was still realitivly new, I just cleaned the inside and top side the holes in the fender liner and applied some heavy duty duct tape, to seal off the holes, on both sides if I could reach, or just in the inside of fender liner.

Since this simple fix, have not experienced any water in the cab floorboard area.

I'm sure finding the area in the firewall, would be the true fix, and take some de-construction.

I did via a light at night try to see if I could see the entry point, but no luck. Lots of wiring harnesses, etc....to deal with.

Markiemark:C