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Old 04-15-2021, 11:20 AM   #3
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Join Date: Nov 2020
Location: Brooklyn, NY

Originally Posted by John242Ti View Post
Just cap off the vacuum port at the manifold. As long as there's no vacuum to the system, the fresh/recirc flap is in the recirc mode and the dash vents are open with the defrost and floor vents closed.
As someone who’s encountered this unintentionally, I can say this approach is very effective. It also made for a very foggy car, but I think that’s also a wrong-coast problem.

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