Re: 2003 jeep grandcherokee limited water filling up inside the evaporator box
Does the water come out from the drain in the engine bay when you bang on the box, or from an other place? Normally no rainwater should enter the box in the first place. Isn´t it condenser water which accumulates and just a little comes out of the drain? Did you try to pry the drain with something to see if more water comes out?
Did you check the air inlet aft of the hood for any debris which would let raining water to accumulate and enter the airco system?