WillalwaysownaFord

I have a 1997 Ford Explorer 4.0l V6 i cant seem to find the pcv valve i no its cloged becuause it makes a loud humming noise if anyone knows the location it would be a great help if not im sure il find it... most likely its hindin in a difficult place..

peace, Joe

snap11

it could be your idel air control valve.i have a 97 sohc 4.0 and it made a loud horn like sound.i replaced the valve and it fixed the problem.

WillalwaysownaFord

Yes i think that may be it that was my Second guess at it i still want to replace the PCV valve becuz I bought the Explorer used and dont no if the person who owned it ever changed the oil often...My Father had mentioned something about the idle air control valve. I believe thats on the air cleaner.

ThaNk you for yur help

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virgamanda

The PCV is located behind the intake on the passenger side.