Bigchillcar,
had your car been sitting for a while? Right after i bought mine (it had been sitting with the P.O.) the blower fuse blew..i was thinking the worst but i popped in a new fuse and it has been working fine ever since.
i got to wondering if the lubricant in those motors hardens or stiffens when its not being used...i was restoring a 928 and neither window operated, but when i disassembled the window motors, turns out they had just been sitting so long the grease had hardened and siezed up the motor..once i cleaned it up and re-lubricated, they worked fine....
with that experience i try to exercise my blower fan over the whole range whenever i think about it..maybe silly but in my mind i am prolonging the fan life
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1990 C2 Cabriolet Guards Red
'81 928 Zinnmetallic Project Car (sold)
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'87 944na Maraschino Red Metallic (sold)
)