1993 Honda Civic Idle Air Control Valve

I removed the IACV and found in the leading hose (intake) a fluid that looks like anti-freeze. Where might this be coming from and is it possibly something I can fix myself? The engine idles fine until warm up then tries to die. I was told at Pep Boys (please don't hold that against me) that it was the IACV and was very expensive to replace on this model. So I googled and found how to clean first. I did so but it didn't click that this was idle AIR and there shouldn't be fluid in the incoming line. Any help you can give would be much appreciated.