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I have a code po446 and CEL up right now. 446 indicates a vent circuit malfunction on the EVAP system. I am trying desperately to track the fault. In the photo you see the black charcoal canister with a green arrow pointing to some sort of blue valve. Its that valve I am interested in. I have disconnected the top and bottom purple and red arrows and hold the line (including the blue thing) in my hand. I am able to blow each way through this line. That confuses me as I wonder now why it is in the line in the first place if I can blow each way. No electrical connection to the blue thing. I would have thought I could only blow one way. Does anyone know what its called and what its there for? Is it a good one or a bad one. I hope its a bad one and then my problems will be solved.


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I really need to know the answer to my first message as I am in the middle of smoke machining the evap system. The question being. I can blow air and smoke BOTH ways passed this blue valve. I need to know if this blue thing is good or bad as I think I should only be able to blow ONE WAY not both ways along the pipe. Otherwise why is it there in the first place. What is it supposed to do? THERE IS NO ELECTRICAL CONNECTION TO THIS PART.


Edited by Hurdigurdiman
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the 466 code is gone but I have 2 more up or pending p1124 and p1126. I would really like to find if my blue valve is at fault but no one wants to help me on this subject.  Does anyone read these posting. Its been up for a month. ?  I have seen it for sale at almost $200 but I need to know if mine if bad first. Obviously the seller will not help me. They only want to sell the thing.  

blue valve.jpg

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