750i Tankgeber

[Erich]

auch die Widerstandsdraehte kann man erneuern  https://www.shiftbmw.com/model/e32/f...-and-cleaning/
-There are three wires running from the top to the bottom inside the sender. The two thin ones are resistance wires.
-These are used by the level float. The float’s guides will short the wiring. By doing this the loop will be smaller thus giving a lower resistance value.
-So as the loop gets bigger the resistance values will rise. The proper resistance is between 3.2 Ohm (full) and 88.7 Ohm (empty) for the 90l sender and 3.2 Ohm to 95.7 Ohm for the 100l sender.
-The third wire, which is a lot thicker then the other two, will trigger the yellow light which indicates you are running out of petrol.
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Kunststoff kann man auch wieder reparieren, oft bricht ja das duenne Rohr unten ab, wenn man den Tauchrohrgeber unsanft ausbaut, Glasfasermatten, Kleber..