PyrPatriot
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Noticed after Jeep changed my oil
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Is this thing supposed to be open?
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ZTMAN
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No idea what that is for, but just went out and poked my head under the hood, and mine looks the same.
Gladiator4Runner
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That's a one-way altitude re-calibration vacuum pressure regulator. PV=nRT calculation within the central computer will close this when appropriate
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