Are you saying that even though I see water trickling/streaming in from the bottom of the fusebox inside the cabin near the left-foot area of the floorboard, right after I pour water directly on top of the fusebox where it meets the firewall in the engine compartment, that water is NOT coming in at or around the fusebox?

 

Got a pic of where you are seeing the leak come in? And if you had a pudding, I think you may have a few locations leaking.

 

I'll try to get a picture, thanks!

 

Did you take out all the carpet? Airs out better and I then took it to a car wash and pressure washed it. It was filthy haha...just keep at it you will find the leaks.

 

I've got the carpet peeled up and back all the way to the center console, with a space heater blowing away at it, and I'm sopping up water off the metal floorboard every couple hours.

I would've pulled past the Console, but I can't squeeze/nudge/twist the Center Panel out from between the E-brake handle and the Lower Instrument Panel to clear the way to remove the Console.

You pressure washed what at the car wash? The carpet, or the floorboard?

 

Here is a video. He didn't take off the dash bezel sound the radio and hvac controls but it makes it easier if you do. I washed the carpet. It was a good reason too and very much worth it to me.

https://youtu.be/ssWYdZPmb30

 

outside the truck huh?

yes i had water run on the fuse panel and in front of fuse panel b4 i fixed it

u r doing the right thing with carpet, it will dry in time, squeese it out if you can.

i assume u pulled the seat...

 

What about outside the truck? Nothing I described is outside the truck. There is the fusebox sticking out of the firewall on one side into the engine compartment under the hood, and onto the other side into the cabin, on the left side of the driver's foot/pedals area. All that is not outside the truck.

Yep, I pulled the seat, for sure - thanks!

Here's the pics of my situation. They're showing in reverse order of how I uploaded them (and thus reverse chronologically) and rotated counter clockwise on the screen on this reply section (which is annoying and clumsy to view here), but not on my computer like that, so if anyone knows how to edit/correct that here, let me know.

As for the pics, in currently reverse succession, I point to and move camera closer to the fusebox that the leak is coming in around. You see the bead of silicon that I put around the edge gap, and I also put some around the grommet next to it, that passes the trunk release.

Unfortunately, I came back to the silicon job over 24 hours later, and it hadn't dried/cured at all! First time I've seen this silicon do that. The silicon is rated to be applied between 40-120F ambient temperature (I applied during about 65F), and it's supposed to dry in 30 minutes, cure in 24 hours. The Jeep sat there for more than a day with hood closed, no extreme temperature or humidity, and I've found it with the silicon still very wet, able to scrape right out. Anyone have any idea why no drying/curing?

Carpet pulled up as far as I could get it to the center console area - and very wet underneath, drying on day 3 starts tomorrow - still very wet tonight - and I've been running electric space heater in the Jeep all day, and wringing out/sopping up water that drains out of pulled up carpet/carpet padding. Anyone have a recommendation for non-carpet replacement for non-permanent (so, not Monstaline or any coating type stuff) floor covering?

 

Check the expiration date of the silicone.

 

im refering to the fuse panel by the pass right foot.
im dry there now but found a trace on the floor today. my carpet is still pulled up for checking. im about convinced its impossible to stop it after all ive done.

im going to cut the carpet on both sides of pass foot area and roll it back to the seat . if i ever have a passenger, on a dry day ill roll it down. im thru fighting this.!! not worth the effort.


cancel cutting, see screen isolation...

 

EDIT/CORRECTION/UPDATE: I errantly referred to the C100 as "fusebox" several times in this post. I've now replaced those "fusebox" mentions with "C100". I've left some "fusebox" mentions in there, when they are referring to the Jeep's interior area, where I think I remember it actually being near the Jeep's interior's actual fusebox area.

ORIGINAL POST (WITH CORRECTIONS):
When I apply water to outside of the C100 (as shown in first picture, under hood at firewall) w/syringe, it immediately trickles through the firewall into the inside of Jeep, onto my floorboard, coming from interior's fusebox area.
I can't move floorboard's foam out of way enough to see exactly where on 4 sides of fusebox it initially enters interior cabin, but I definitely see it trickling down the floorboard from the fusebox.

I can silicon top edge of C100 in engine compartment, but haven't figured out how to access other edges of C100 to silicon.

Any suggestions of tools or techniques to apply silicon down into area I can't see and can't get my fingers down into?
OR is that C100 designed to disconnect and pull out of the firewall area (at which point, I might access the other edges) and then reconnect?





What is this big round dark grey object (in 2nd picture) that takes up most of this picture (between the rusty-topped reservoir on the left and the firewall on the right)?

Once I know what it's called, I can research how to remove it out of the way, allowing me access to the edge of the C100 on the firewall, to silicon around the C100's edges, to keep rain from leaking around it into my cabin.






There might be water coming in around this cable harness/grommet (in 3rd picture) that holds the hood release cable, too?

 

"round thing" is brake booster, rusty is master cyl.
what yr is your xj?

 

Thanks nujeepguy!
My XJ is 1988.

 

!, mine is 2000, 2 different animals. sorry for confusion!!

im still looking for tiny leak by heater fan, maybe caused by my previous mod. it never ends.
im thinking of adding wire mesh to isolate the carpet from the floor where a trace pf water appears slowly...

 

i got 3 layers of 1/2 inch screen wire cut to fit from pass seat up to firewall.put it next to metal flooring and covered part of it with thin flashing aluminum.carpet goes down on it.
any trace leak will be isolated from padding/carpet.i may add a few tiny holes in the floor but i think a tiny amount will evaporate.
ill run the hose on a warmer day!! not giving up!