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Crankcases and PCV Valves
Chevy Impala
Nissan Maxima
Ford Expedition XLT

Where is the PCV valve located on an 2001 Impala 3.8L engine?

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2008-11-09 05:30:57
2008-11-09 05:30:57

------------------------------------------------------------ The PCV is right above the pullies on the front of the engine. There is a sensor right above it (MAF sensor?) Get the kit from the dealer: Part #17113515 What is the function of the PVC valve ? Does it control or block out NOx vapors which pass through the exhaust system and affect the tests results of the auto Emissions Inspection program? it's the MAP sensor the pcv's function is to clear crankcase vapors that blow by the piston rings HC not NOx. the EGR recirculates exhaust gases to cool combustion chamber temps and reduce NOx emissions.

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