The other day I was cleaning out my truck and noticed the passenger side front floorboard was soaking wet. When I pulled the carpet up there was standing water down in the door sill. I soaked it all up the best I could and it dried. I popped the hood an noticed one of the firewall grommets where I ran my subwoofer wire through had popped in and had about a 1" gap, so I assumed that is where the water came through, so I fixed it.

I just checked the floor again, now that it had been about two weeks. It's wet again! There's no standing water this time, but it is starting to smell.

What could it be that's causing the water in the cab?

In the picture, the dark spot is wet.

 

Not sure if this could happen but could your Ac or heater core leaking?

 

 

Satellite antenna leak most likely. Common problem.

 

It's not the 3rd brake light, I emailed my friend who owns the dealership where I bought the truck. He wonders if it's the AC drain pipe, clogged. Anyone know where I can fine this drain pipe?

 

It hasn't rained since I soaked up the water the first time.

 

I had the same thing after I cleaned it. But It hasnt happened since. I'm thinking I sprayed water through the bottom of the door.

 

The water was there before I detailed the truck.

 

Maybe it is condensation not draining then. You should be able to get under it and find the drain hole.

 

It is likely condensation from your AC condenser running back along the outside of your drain tube and back through the fire wall into the cab. Very common in Jeeps. You canget a piece of rubber hose 4-6 inches long and a hose clamp. Place this over the drain tubeand angle the hose down. THis will allow the the drainage and external condensation to drain directly onto the ground below the condeser as it is supposed to.