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P0455 vent valve operation
I have this in for a P0455. I dont get many emission faliures so I dont have much experience with them. I do have a Tech2, and I suspected a large leak, gas cap was on and tight. So I command purge to 20% (Tech2 wont go higher) and I hear the vent valve close ... Login to read more. 
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| Engine | 3.5 L |
| Trans | 5-speed Automatic (Electronic) |
Vehicle Data
2006 Saturn Vue 3.5L
| Engine | 3.5 L |
| Trans | 5-speed Automatic (Electronic) |
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