Question about 2000 Nissan Quest
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Posted on Jan 02, 2017
Code P1491 is not the PVC Valve.It is the Vacuum Cut Valve Bypass Valve.
Which is located above and away from the egr canister under the driver side rear bumper it is round and have about 3 hoses connected to it. if it is from a check engine light that says look at vacume cut valve check the egr canisters purge valve some times they stick and throw the wrong code
Posted on Sep 01, 2009
ebay has them all the time also, go here for help on Quests http://autos.groups.yahoo.com/group/villagerquest/
Posted on Jun 08, 2009
The pcv valve is located under the map sensor in a plastic housing. If you stand on the passenger side of the vehicle and look under the hood, the map sensor is the sensor right in front of you. It should have three wires going to it. If you look closely, the sensor is clipped into a type of cap. If you grab the cap the sensor is clipped into and twist it counterclockwise, it should come off and the pcv valve will be inside. You may need new o-rings to prevent oil consumption. You may also need a needle-nose pliers to remove the sensor from the upper intake manifold.
Posted on Oct 30, 2009
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