Today I was vacuuming out my yj and discovered that the carpet in the front two floorboards was wet with water. DOUGH!!!! My top is in good shape and so are the doors. The heater core is good too. There is no trace at all where water has been coming in. I think it may be coming from under the dash somewhere though. The transmssion hump is dry. This jeep is in excellent shape. I left the dash control on "vent" the last time it rained. Could this be it? Has anyone had this to happen to them or know the cure?
I know you have a YJ - but, the 1997 TJ's had a leaking problem on the right side from the vents up top, behind the hood on the outside of the vehicle. Would leak in behind the dash, the heat would dry it up underneath except the carpet. Took them awhile to figure out what was up. (hence there is only 1 "vent" opening in the 98+ TJ's in stead of the 3 "vents" that the 97 TJ had.) Now you are asking, YJ - TJ? what comparision? Well, there maybe some sort of hole, or something up top there? Worth taking a look. As to the vents being open. well.... I doubt it, but possible.
This might be some interest to you. Very common problem with CJ's and YJ's is a leak from the dash. Rust had gotten into the dash and ate things up pretty good. It would leave puddles in the front. Anyway, you can read what I did HERE
look at the condition of your weather strip,between the windsheild frame, and the body tub. after about 5 years thy tend to develop leaks there (the weather stripping will shrink over time). the leaks can also ruin your speakers and radio if you let them get worse. (I learned first hand.)
90 MJ short bed converted to 4x4
90 XJ 2 dr 4x4
The same thing happened to me on my '94! Lift up your hood and look down the side of the Jeep where the engine compartment meets the rest of the body (along the fender). You will see a weld which has over time broken loose or cracked. Just put some sealent on this area and it should take care of the leak. Both sides on mine were leaking and I am happy to report that after much rain the floor boards are still dry. If you pull up the carpet you might see the water trail.... To test use a large picture of water and pour in this area and see if the water comes through to the inside....
Do you still have the drain plugs in the floor boards? I found the same thing and when I rolled back the carpeting guess what no drain plugs. I filled the holes w/ some new plugs and no more wet spots.
I have 94 and found water on the floor boards. If you do a lot of mud riding, check (in the engine by the fire wall) hood vent drain line. Its a small 8 inch hose that sometimes gets pluged with mud and crap. Its easy to remove and clean. Haven't had any problems since.
Man oh man!! Has this topic sparked some interest!! Well, I got to looking real close under the dash and saw some sunlight coming through. I found that a rubber plug was half way popped out of the fire wall. I took a screw driver and popped it back in, had my wife (who is 7 months pregnant tee hee) spray the hood with the hose. After soaking me and the jeep, I got that leak fixed. (I think) Now on to the passengers side. I found that water was coming in around the ANTENNA MOUNT. Ill tighten it up and get under there with a little clear permatex tomorrow. Thanks folks. Ill let yall know if I find anything else. -In West Kentucky
The cowl vent, is the grill behind the hood hinges, in the center.
it drains through the fire wall via, a large rubber hose under the hood. It's between the engine & battery, & hangs vertically. It's final opening is kind of pinched. Take the grille off the cowl vent & run a garden hose through there to clean it out. Have an assistant hold the "pinch" open, to let the dead leaves come out.
LOL! I am not sure if i can remember a time when my floor was dry.... oh wait, yes i do, it was when there was more "hole" then floor... after fixing my floor last year i realized just how bad it was leaking, several inches of water would build up in a single storm. I have it sealed up for the most part now, but every now and then a bit will slip through, ahh well its a Jeep..
Do what I did....pull the carpet, drill a few more holes in the floor and ROLLLLLLLLL...the ride is loud but hey, it's a Jeep...how many people can say 'I just got back from the beach and have to hose the inside of my car out'?