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E34 M5 Discussion 1988-1995 Sedan and Touring

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Old 15th October 2010, 21:27   #1
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Coolant level switch warning

Board, while disassembling my expansion tank for replacement I found a problem you all might want to be aware of.

The float in the radiator level switch (#3) was stuck in the up position due to crud between the float and the sensor.

This will prevent you from getting a coolant low warning.

A slow leak might go undetected up until the point you get a rise in water temp and overheat.

91 Brilliant Rot, Black Full Leather, SLS delete, Koni adjustables all corners with Eibach springs, UUC Short Shifter, Throwing Stars,
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