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Q:m2002 impala ls 3800 air is on even when key is out of the ignition does this control the aur pump
A:Hi Luke, glad to assist you! The A.I.R. Check Valve is an emission control device that allows air into the exhaust system to help burn pollutants before they reach the atmosphere. I would suggest that you take your vehicle and get it thoroughly checked by a certified mechanic before buying any parts that may/may not solve the problem.