Fuel light test?
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Cloggy Saint
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Grrrmachine
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Depending on which body style you have, you can access the wiring loom under the rear seat, right side. There is a plug and socket connected to the fuel intake hose just under the carpet, and by shorting the brown/grey wire to earth you should make the low level light come on.
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Cloggy Saint
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Quaser
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or undo the nut underneath on the fuel tank and give the tank a clearout if you wanna make sure the sender works
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BMW E36 328i Sport (M52B28 Turbo Project)
http://www.e30zone.net/modules.php?name ... ic&t=68663
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greg124
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Had my car 4 years before I even realised it had as low fuel light...
Schadenfreude - the German's haven't got a word for that.
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Brianmoooore
- E30 Zone Team Member

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Easiest way to fully test it is to run the tank down to a quarter or less, lift the rear seat cushion, remove the RH inspection cover, unscrew and remove the four small nuts and washers, and lift the sensor straight up until it's half out of the tank.
Wait a few seconds for the tube to drain, and the light should come on.
Wait a few seconds for the tube to drain, and the light should come on.

