Quote:
Originally Posted by WAKman
Tonight I pulled the old sensor--it had a bit of brake fluid on one of the mounting ears, but nowhere else. I don't know it it is good or not, but it's out! When I pulled it out I heard a large "pop" and an inrush of air as it entered what I presume was the vacuum system. I have a new sensor on order and will install it and hope for the best.
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It was probably enough to ruin it. As you heard the system is under vacuum. My guess is fluid gets pulled from the vacuum pressure then forced up into the senor ruining it.
My fluid was dusty coated all over the sensor. I think it got spilled on when BMW did it for the last owner. Then the pressure changes from my recent flush caused the sensor to be pushed over the limit