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So yes, if your icemaker is dripping, either the water pressure is too low, or your valve which is part number AP4009066 isn't sealing up properly so it dripping through slowly and then the second valve assembly (which you replaced) allows water to drip through as well since the water pressure is definitely too low since it's just dripping through the first valve.
If your water pressure to the refrigerator from your house is god, then order and replace AP4009066
No problem and good luck! It has 2 inlet valves so you have one before and after the filter in case the filter breaks or something like that.