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I just rebuilt my vanos and replaced my valve cover. 99 323i
Now I have an exterme buzz coming frommy ccv. When I pull the vapor return hose from the front of the VC and cover it with my thumb the noise completely stops. When I turn the car off it makes a Chewbacca noise.
I am wondering if the o2 sensors on my exhaust heads will trigger the ccv??
Just wondering because the wires to this o2 sensors were the only other thing I touched.
Thanks
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