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Old 11-28-2012, 01:42 PM   #690
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Join Date: Sep 2006
Location: Heart of Buckhead
Posts: 518
My Ride: E93 / Q45
Originally Posted by Stinger9 View Post
There are no drain/vent holes on the fitting for the temperature sensor.
You could just buy a new sensor that comes with a new O-ring and correctly install it with lube (coolant can be used). This will stop your leak as described by you.
Some buy the O-ring separately, but dealer does not sell it that way. A new sensor will not hurt anyone. Is cheap.

Lower coolant by draining at the radiator bottom drain fixture. Careful as it is plastic.
Remove ET cap when doing this.

Are you known to your friends as "mr. nothing"?
Thank you for the detailed help! Sorry for the incorrect info about the holes. After looking again I was referring to the cutouts that allow the sensors clips to expand. Thanks again.

Last edited by Nichts; 11-28-2012 at 02:04 PM.
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