when i have my heat/(or ac, which i will not need for a while) on, there is this relay like clicking sound comming from the center of my dash. is this normal? it is a random clicking. usually within the first minuite it's on. sounds like this: on,off,,,,,,,on,,,,,off,on,,,,,,,,off......
your comments will be appreciated.
p.s. this is my 87 300e.
thanks,
adam

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87 300E
BLACK GOLD WITH CREAM INTERIOR, SPOILER, AIRDAM
CLEAR MARKERS

87 420SEL
BRONZE WITH CREAM INTERIOR

I think what you are hearing is the centre vacuum controller cycling the ducts. This is done automatically. Mine does it about once every 2-3 minutes.

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Mark
82 300SD 100k
91 Caprice SS
92 Jetta TD