Hello, I recently got my hand on a 2009 Maxima and am in the process of cleaning it up. While I was looking under the hood I found the vacuum hose and it was attached to this… let just say I don’t think that it look right. Can anyone tell me what I am looking at? Any help

Thank you,

 

That is called a Power Valve Actuator (there is another one on the other side) Supposedly, at low engine speeds vacuum is applied to the actuator, the valve is closed and air is diverted through a longer path in the intake to enhance maximum torque at low speeds.

 

Thank you very much, I appreciate the help and explanation for what is does.