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Old 05-11-2011, 07:19 PM
Yak Yak is offline
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Join Date: Aug 2009
Location: San Antonio, TX
Posts: 1,711
Check this thread and then check your defrost pod: (right foot)

Scans of airflow for W123 climate control

If the defrost pod leaks in one or the other of its bladders, then the center pod can't get vacuum. I'm not exactly sure how the center pod check valve works, but I'd look at the defrost.
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