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The PCV (Positive Crankcase Ventilation) valve is located on the right of the valve cover near the front of the engine. There is a hose from the valve to breather or air cleaner. The EGR (Exhaust Gas Recirculation) valve is under the air cleaner close to the fuel rail. These both have a difficultly level of zero, but may take you a little while longer if you haven't worked on cars much. :o)

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โˆ™ 2005-03-25 03:04:08
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Q: Where are the pcv and the erg located on a 1993 Cadillac DeVille 4.9 and is it difficult to change them?
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