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      12-25-2012, 10:22 PM   #3
BKV122
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Drives: E90
Join Date: Feb 2009
Location: NY

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2006 330xi  [4.75]
Had the same thing happen to me, coolant all over expansion tank but no leaks found. Re filled and same thing happened again. Ended up replacing both t-stat and water pump, no issues after that.
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Monaco Blue 330xi - Terra Interior/6-MT/Sport/Premium/Cold/CSL's/M3 Spoiler Lip/Black Kidney's