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Just thinking here- I'm wondering if my fuel gauge arm may be bent, and giving an inconsistent fuel reading? Is there specified impedance readings for full, half, and empty?
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1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights. -
There is, though I'm at work so I don't have it handy. The fuel gauge on the Standard uses a 7 Volt regulator to keep the voltage to the gauge down. That seems to be the most common failure on the gauge circuit.
If you want to test the sending unit, put a VOM on it and measure the resistance as you move the arm up and down. It should give you a smoothly changing reading, up or down, as you move the arm. Look for large jumps as the arm moves, or a jump to short or open as it moves.Ray Matteis
KE6NHG
XS1100 E '78 (winter project)
XS1100 SF Bob Jones worked on it! -
Here you go, Ian:
Full: 6 to 10 Ohms
Half: 28.5 to 36.5 Ohms (I know, half an Ohm?)
Empty: 75 to 85 Ohms
.-- Scott
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2004 ST1300A: No name... yet
1982 XJ1100J: "Baby" SS Brakes, '850 FD, ACCT
1980 XS1100G: "Columbo" SS Brakes, '850 FD, ACCT
1979 XS1100SF: "Bush" W.I.P.
1979 XS1100F: parts
2018 Heritage Softail Classic 117 FLHCS SE: "Nanuk" It's DEAD, it's not just resting. It is an EX cycle.
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If I connect resistors to the fuel gauge in the specified ranges given, it should work, right?
And, thanks Scott & Ray for the helpful data.1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.Comment
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Yes, it should. Use at least a 1/2W resistor, as I don't know what the draw will be with the gauge, and you don't want the resistor to turn into a cigarette lighter!
Ray Matteis
KE6NHG
XS1100 E '78 (winter project)
XS1100 SF Bob Jones worked on it!Comment
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