I just replaced the floor pans in my jeep... I did a very good job on them and the gaps were very small. All of the gaps were siliconed and the bottom was undercoated. Only a week after I had the floor pans done and it back on the road I noticed that the passenger front carpet was wet. My jeep was just out in a pretty big rain storm. I took my passenger seat and carpet out. There is a support (front of seat mounts to) and in front of the support there was at least an inch of water pooled in it. Btw the driver side was dry and behind the passenger side support was dry. After drying the water out I took a house and sprayed it under the floor pan and no water seemed to come in. I am not sure where the water would be coming from. Let me know if you have any ideas. Thanks! I appreciate it

 

Btw I did not mean the gaps were siliconed... It was a type of caulk for floor pan gaps

 

And hose not house lol

 

it's pretty common leak I think. The water entering the cowl in front of the windshield runs down the snorkel for the fresh air intake to the cabin. The foam gasket that seals around it goes bad. You have to take the HVAC box out and to get to that you need to mostly pull the dash board out. There are several threads that pertain to this. I keep a pile of rags on the passenger floor boards against the kick panel to soak up the water. Parking it nose down hill helps also.

 

k thanks... I am not sure how to search trends could you send me some links to them... I think that the reason I did not know the water before my floor pans was because it would seep through the rust holes... The rust holes prob worked as a drain haha

 

Windshield,The front doors or its the cowl.Its a 15 year old or older jeep a lot of gaskets and seals are gonna crack and leak on it.

 

I'm running down a tough hard to find leak right now as well. Last night I took 3 cups and put 4 drops of food coloring in each (red, blue, and green). I then put clean white paper towels in the area that the water first collects on the floor. I then poured the colored water in my must suspected leak spots, LOWEST first. My leak is on the driver side, coming in right where the door sill and kick trim pieces join. So I poured one cup down the driver side of the cowl and waited. It all drained through the vehicle properly and ended up on the garage floor. None on the paper towel. I then took the next color and poored it at the gap where the fender and windshield pillar meet. Nothing. Then I poured the last on the front of the driver side gutter along the roof, right near the front. Which causes the water to pour from the front of the gutter right over the top driver side corner of the windshield rubber gasket (I have the rubber gasket, some have trim strips).

I was certain the windshield was the culprit. But nope. All three test failed to reproduce the leak. But using the colored water was still a cheap and easy idea to isolate it.

I'm fairly certain I have my situation narrowed down to a leak that happens under pressure only (carwash) and has to do with the area around the door hinges on the driver's side. Which is a very difficult spot to see well with the doors on.

Good luck.

 

Here ya go.
https://www.cherokeeforum.com/f2/wat...ng-cowl-34969/
https://www.cherokeeforum.com/f2/wat...-motor-178531/
I use Google to search the form.
And I've thought of putting a drain over there. But if I did that I might as well fix the leak.

 

cool that food color is a good idea

 

After a ton of leak testing I also came up with another leak trouble shooting tip, which is that if you are finding an inch of water in the floor pan, it is very unlikely that the water is coming from underneath. I know this because I fixed a lot of holes on the underside, and none of them accounted for the leak I was ultimately tracking down. They could cause wetness, but not even close to the leaks where there is gravity involved.

Mine ended up being an obscure panel seam right near the gap between the driver side front door and the fender. At the bottom where the fender meets the A-post. This would typically just drain right out between the fender and door. I think this leak is unique to my Cherokee, which has had some unconventional floor pan replacement work done by PO. So I doubt it is a common leak for most Cherokees.

 

yes I agree there is no way it is coming from under and the fact that is actually holds water. This is only on the passenger side front floor panel. My floor panel there was bad and full of holes. I am guessing that is why I did not notice it was wet before cause it acted as a drain.

 

I Just fixed a leak in that area on my 2000 XJ (right hand drive). This might be worth checking as the source of the leak could be sealed without tearing the dash or cowl apart.
Immediately below the blower motor, in the dash panel is some kind of foam patch about the size of a penny. During assembly the patch has clearly got crushed between the inner wheel housing and the dash panel. It's taken 15 years but the patch seems to have degraded such that it now let's water through from the engine bay to the passenger footwell - only during torrential rain when it gets really deluged.
I sealed the area around the patch in the engine bay and the footwell with a heatproof silicone sealant and it is now totally watertight.