I did some searching and didn't see anything like this. My pcv valve is making a buzzing sound and it vibrates the tube going from the pcv valve to my intake manifold. About 2 months ago I replaced the pcv valve. I just noticed this today, I removed it and cleaned it and it stopped for a about an hour... then it started back up again. Last night I did the throttlebody coolant bypass mod, adjusted my throttle kick down cable (almost to the rubber peice) and tightened my throttle cable. Im about 1000 miles over on my oil change.... I have a K&N oil filter and oil Im gonna put in asap. Im gonna change the PCV valve tomorrow when the parts store opens but just incase.... would anything else cause this besides a faulty pcv valve?