The fuel gauge on my 69 1600 reads full when I top the tank. But by 100 miles driven it has progressed to the empty line when in reality it’s probably closer to a half a tank. Any recommendations on fixing its functionality?
Thanks
Fuel Gauge Question
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- Roadster Nut
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Fuel Gauge Question
1969 1600
Santa Rosa, Ca.
Santa Rosa, Ca.
- fj20spl311
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Re: Fuel Gauge Question
Clean the connections at the tank.
Also check the OHMs full should be 86 and empty 10 or the other way round.
Also check the OHMs full should be 86 and empty 10 or the other way round.
Phil
67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
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67.5 SRL311-00148 Blue (FJ cruiser VOODOO Blue)
67.5 SPL311 FJ20E teal SDS EFI
69 SRL311 SOLD
19 Raptor SCAB
- msampsel
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Re: Fuel Gauge Question
since at infinite impedance (resistance) there is no current flow and my gauge reads empty when off, the 86 ohms is empty. Pretty easy to check the resistance of the gauge sender when you think it's half full.fj20spl311 wrote: ↑Tue Jun 26, 2018 6:41 pm Clean the connections at the tank.
Also check the OHMs full should be 86 and empty 10 or the other way round.
Disconnect battery (a precaution may not need too), take plate off the tank remove wires from the sender. Measure resistance across the sender. If it's close to 80 ohms then it's faulty and or needs a good cleaning. You can take it out and measure the resistance as you swing it from stop to stop too and see if a cleaning of the armature might help it.
Maybe you only get 10 mpg?
67 1600 (Mods only a mother could love)
78 911 SC Targa (Severe Oversteer but still loved)
78 911 SC Targa (Severe Oversteer but still loved)
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Re: Fuel Gauge Question
I had same problem on 1967.5 2000. Problem was a bad voltage reducer that supplies the gauges. My temp fix was to shorten a wine cork to expand the tabs the wires connect to. Proper fix is a new voltage reducer. You'll find the reducer under the dash, along side the steering column. Test by expanding the wire connections with your hand while watching the fuel gauge. Replacements are available from Rallye and DatsunParts.com.