ok, after having replaced my first engine in the vehicle( also nissan engine because practically nothing else fits!) because it was such a piece of crap, my engine light comes on bothering me about a swirl control valve. We can see that the solenoid only moves sometimes, and the only way to check if it's the actual valve is to rip it apart... no thanks! i've put too much money into this lemon, any suggestions to make this go away so i can pass emission in 2 months would be welcome!