If you have a sun roof that is most likely where your problem is. I had the same problem. If you dont have a sunroof check front windshield and the roof rack area
Here is the instructions I originally posted on another thread concerning the subject over on Lost.:
Yes definately. I had the same problem 3 months ago.
When it rained I would get water on the passengers side carpet. I only noticed after a severe rain and had 3" of water on the passengers floor.
The drains are located in the front corners of both sides of the sunroof. The drains run down the A pillars. The easiest thing would be to open up your sun roof and look in the front corners with a flashlight. You will see a black plastic flattened looking funnel that connects directly to the tube and it has no screen on it. (Not a good design Chrysler!) I learned this the hard way by taking everything apart. (mine had pieces of oak seed in the funnel part right at the hole opening) That is most likely where the problem is.
Do not try to blow out the funnel if you see an obstruction try to remove it with needle nose pliers or shop vac with a crevis tool. If you cannot you will need to follow the directions below, clear the drain tubes then take air and blow the disconnected funnel out towards the sun roof.
If you dont see anything blocking the holes then you need to do the following to check the drain lines:
Remove the A Pillar covers with sock wrench (forget the exact size). You also need to unscrew the sun visors, you don't have to remove them though, you can let them hang out of the way. You also will need to remove the interior roof trim molding by the door. Once this is complete you can pull down the headliner enough to get your hand in the space between the headliner and the roof. You will see the black tube run right up to the corner near the sunroof. It just pulls off from the nipple, there is no hose clamp holding them together. I pulled the hose from under the headliner to where it was exposed enough so I could use my human powered blower to see if the was blocked. You could here the line was clear.
After I completed the instructions above only to find out that the lines were clear, I looked in the corners of the sun roof and found my problem. If I had only looked there first would have saved my self some time.
All that said the project stated above took about 30 minutes to complete per side.
Dont forget, you need to remove the bottom trim moldings and pull up the carpet to soak up all of the water hiding in all the areas of the floor pan. The carpet of the KJ has thick foam padding attached. I thought the carpet was dry ( and felt dry to the touch) only to find out the the padding was still water logged and the floor pan is not flat and has areas that could hold 1/2 gallon or more of liquid.
I was going to cut out my carpet and install herculiner so I would not have to worry about drying it out again, but I'm glad I did'nt, for what ever reason both sides of the floor contain large bundles of wires for the KJ systems and again the floor pans are not flat. You would think they would do a better job routing the wires.
Well good luck.
Here is the link to the thread:
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=1&t=54435&start=0
