It stands for positive crankcase ventilation. It plugs into your valve covers. It is there to remove moisture which would cause sludge to form. And it extends the life of the oil and engine. It should be replaced somewhere around 30,000 to 50,000 miles. Hope that helps a little
which valve cover is the pcv valve on? theres a tube going into the passengers side directly under the air inlet tube and a larger one on the drivers side.
Its on the passenger side valve cover. Also it takes the compression that blows by the rings and runs it back through the motor so the inside of the block doesnt build pressure.