Fuel gauge not working right

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MiniC
E30 Zone Newbie
E30 Zone Newbie
Posts: 127
Joined: Sat Jan 28, 2017 11:00 pm

Post Sun Sep 16, 2018 6:29 pm

hey zone my fuel gauge in my 87 325i isnt working right it will register a full tank but basically drops to zero most of the time but will occasionally show a reading that is mostly wrong

any ideas (also the nut on the back of the gauge is tight)
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pianist
E30 Zone Regular
E30 Zone Regular
Posts: 396
Joined: Mon Mar 12, 2012 11:00 pm
Location: Lancashire

Post Sun Sep 16, 2018 9:44 pm

Easiest thing to do is to check level sender connections under back bench (there are two on facelift) but very likely the little wound wires on the sender unit inside fuel tank got worn and broken of at some point so new sender unit might be needed. Like I said there are two and you would need to inspect then both to find the faulty one.