if you do a search under thread called center vent blues,there is a picture of two pods in center of dash controlling defrost and center flap.my question asked how do you test those pods.thanks for your responses.by plugging yellow vac line and then green line at firewall i can at least narrow down which system is contributing to vac loss affecting delayed shut off.ill end it there.thanks for your help.maybe someone else has something to add.

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95 e320,87 sdl,79 300sd