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TDS »
https://forums.nicoclub.com/tds-u28899.html
Thu Mar 13, 2008 3:57 pm
You mean SCV, or Solenoid Control Valve. This is the sensor that gives the signal to an actuator behind the intake runners to open and close the butterflies. I don't know about the KA in an altima, but on the 240, it is located behind the head. If your going to remove the SCV, I think this requires you to take off you intake manifold to get rid of the actuator and the butterflies at the same time. I would only recommend this if you're going to remove all your emissions. Do a search for 'secondary butterfly valves' to get some more info.