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Re: [Roadsters] Fuel indication issues

To: Pat Horne <patintexas@icloud.com> please include it with any abuse report [74.101.187.36]:58330
Subject: Re: [Roadsters] Fuel indication issues
From: RWM via Datsun-roadsters <datsun-roadsters@autox.team.net>
Date: Sat, 9 May 2020 16:09:41 -0400
Cc: Datsun List <datsun-roadsters@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: datsun-roadsters@autox.team.net
References: <6AB6D994-3FBD-4209-AD2C-3B84B7EB361F@icloud.com>
Pat,

With ignition switch in running position

Yellow wire to chassis is 7.6 volts, same as to black wire

Yellow wire to ground, no gauge deflection 

Thanks

- Bob


> On May 9, 2020, at 13:19, Pat Horne <patintexas@icloud.com> wrote:
> 
> Hook everything back up except the sender. Turn on the key & measure for 
> voltage @ the sender wires to ground. One should show voltage & the other 
> should be grounded. (Not home now to get colors) ground the one with voltage. 
> If the gauge still sits on empty you have a bad gauge. If there is no voltage 
> it could be a bad connection or a bad gauge. Let me know what yâ??all find & 
> Iâ??ll walk you through more diagnostics. 
> 
> Peace,
> Pat
> 
> 
> Pat Horne 
> We support Habitat for Humanity
> 
> 
>> On May 9, 2020, at 11:02 AM, RWM via Datsun-roadsters 
>> <datsun-roadsters@autox.team.net> wrote:
>> 
> 
> This has been discussed before, but here are the indications:
> 
> Fuel gauge does not budge off empty 
> 
> Fuel sender resistance shows 34 ohms as installed, with tank less than half 
> full
> 
> Fuel sender resistance when removed varies fairly linearly from 47 ohms 
> (bottom) to near zero ohms (near top), then open circuit when the arm forces 
> the wiper off the rheostat windings
> 
> Fuel harness is delivering 7.6 volts, measured with the yellow and black 
> connectors removed
> 
> Shorting the fuel harness to itself (yellow to black) does not change the 
> fuel gauge indication
> 
> Ammeter works, temperature gauge works
> 
> Ideas? Dash harness connector?
> 
> Thanks.
> 
> - Bob Mann, '68 2000 Solex
> 
> 
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> 
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