I purchased an FJ40 and PO was using the air pump as a pulley / tensioner for a fan belt. The air pump has seized. I am going to install another air pump I have for the same function. He had the ports blocked off. Is this what it caused to seize. Should I leave them open? I know about the air pump eliminator from Jim C but they are out of stock. Also I do not know the procedure to take the veins out of the air pump.