91 420 SEL

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02-20-2007, 07:44 PM

Zacman

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Join Date: Feb 2007

Posts: 3

91 420 SEL

This 91 420 SEL has a continous clicking noise from the vacuum switch over valve for the vents. Cold air comes from the center vents with heater on. I suspect the pushbutton control unit.All vacuum door servos test good. Thanks

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