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      10-20-2014, 04:35 PM   #5
fastgaas
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Drives: 2004 Z4 Alpine White
Join Date: Sep 2014
Location: Palo Alto, CA

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Probably could have just replaced the regulator if I had known. The noise was hard to pin down, sort of a loose bearing sound with rattle.
However, the unit then went into full failure, whatever was loose broke free and trashed the inside of the Alt. At $170 bucks I replaced the whole unit. The regulator only would not have saved me much and I felt better with a complete new unit.
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