It sounds like there is a waterfall going on behind the passenger side of the dash. At first i thought it was just the coolant moving around in the coolant reservoir, but someone on here suggested a clogged drain tube. Here are the instructions i followed:
Yeah, chances are you've got a ton of water sitting in there. I had that too, and drilling the hole didn't help. It's clogged up above the hole, probably not straight out like most people fish the coat hangar around in. That TSB is sort of misleading. What gets clogged is the drain passageway, not the hole leading to the outside of the vehicle.
You have to bend a coathangar and run it all the way up to the HVAC case, which is about a foot up. You also need to really move it around in there, because the "tube" is actually a passageway that's about 1 1/2 inch around. Once you hit the real clog, water will come pouring out of there. It might help to have the A/C running while you do this, because the air moving past the core will help push the water downward toward the tube.
Another guy here, and myself, ran secondary drain tubes from this hole to the floorboard on the passenger side, as a backup in case the actual hole itself gets plugged.
96 5.2 Ltd - Flame Red - Every factory option except engine block heater, [URL="http://www.sgarlic.com/jeepsite/dccfan.html"]Taurus Electric Fan / Delta Current Controller[/URL], removed silencer, 15% tint.
Well i ran the coat hanger up their prob a good 18 inches or so and nothing. Still sounds like a ton of water in there. If im idling in neutral, i can stomp the gas and it will make the water move in there. Ive got gallons it sounds like!
Yeah i was running the AC at the time i was taking the coat hanger and trying to unclog it. It must be clogged so high up that i cant even get to it with a hanger. My question is why cant i get to the opening under the hood? If debris was able to find its way in there and it appears to be clogged very high up, cant i just follow the same path the debris took to get in there?