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There is a vacumm hose under the hood going from front passenger diagonally across the engine to the driver rear side. Most likely it is cracked or broken completely. Tug lightly on the tubes to verify if broken, slip an over jacket bit of tubing temporarily, replace whenever, you will have to open the inside engine cowling to get to the rear hose terminal.
Hey my father in-law had the same issue. I made this video to show the hose mentioned above.
cheers
Nick
http://www.truezombielife.com/ventilation-issues-safari-astro-mini-van/
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∙ 11y ago
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