You actually have three on the 'e' engines. The taller, 2-pin, typically blue or white, is the temp sensor for the ECU. The later blue one can be used in the earlier engines with the white ones. Nominal values are the same. It just has tighter tolerances.
The taller, 1-pin, typically brown one is the sensor for the gauge.
The short 2-pin one is a switch for the idle control unit (ICU).
Engine cold (< ~113° F (45° C)) - switch open
Engine warm (> ~113° F (45° C)) - switch closed
"Howdy, Folks!"
1986 Delphin 528e - Roof rack equipped lumber hauler.
1989 Zinnoberrot 325iX Sedan - I miss this car. (Deceased)
1998 Avus Blau 328iC - Someone else's project now
2008 Platinum-Beige X3 3.0si - Current project
2012 Alpine White X3 xDrive35i - My new snowmobile.
2020 Estoril Blue 440i xDrive cabrio - This car is a blast to drive.
Member
Posting Permissions
Reply With Quote
Bookmarks