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Alan O'Connell · 12-02-2021, 08:25 PM

I always took the wire off the sending unit and grounded it. Turn the ignition on and if the fuel gauge goes up to full then the problem is the sending unit. If the fuel gauge doesn't move the problem is usually in the gauge.

12-02-2021, 08:25 PM	#8
Alan O'Connell Senior Member Join Date: Oct 2010 Location: Peabody, MA Posts: 471	Re: '49 car fuel sending unit testing I always took the wire off the sending unit and grounded it. Turn the ignition on and if the fuel gauge goes up to full then the problem is the sending unit. If the fuel gauge doesn't move the problem is usually in the gauge.