Fuel gauge not working

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ziegler
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Fuel gauge not working

Post by ziegler » Wed Oct 25, 2017 12:00 pm

My fuel gauge is shot. I tried to fix problem by placing ground wire from sending unit to frame but no change. What parts do I need to purchase. Thank you for your responses. Zig

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rmel
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Re: Fuel gauge not working

Post by rmel » Wed Oct 25, 2017 12:05 pm

I think what you tried was directly grounding the terminal on the gauge from
the Sending unit to ground and then saw no meter movement -- right?
Puller: 71' 710K 2.7L EFI aka Mozo
Follower: Sankey MK 3, 3/4 Tonne
Rescue Pinz: 73' 712M

Driver: Ron // KO0Q

ziegler
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Re: Fuel gauge not working

Post by ziegler » Wed Oct 25, 2017 12:14 pm

Yes, there was a post regarding this issue some time ago with a pic of someone who fixed theirs by placing a 6 or 7 inch long ground wire from the top of the sending unit to one of the screws on the cover above it. Hope this makes sense.

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rmel
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Re: Fuel gauge not working

Post by rmel » Wed Oct 25, 2017 12:49 pm

If I read your post right, the Gauge shows no reading ?
So that could be a bad Gauge or a bad sending unit.

To eliminate the Gauge as the bad boy, you want to
directly ground the terminal on the Gauge that connects
to the output of the sender to GND -- that would be right
behind the dashboard. If the meter pegs to FULL then you
know it's the sending unit or the wiring from the sending unit.

If you have an Ohm meter, at Full you should be reading a low
resistance value under 10 ohms, Empty about ~80 ohms. If
your reading a very high resistance could be an open wire,
bad connection or your sender gave up the ghost.
Puller: 71' 710K 2.7L EFI aka Mozo
Follower: Sankey MK 3, 3/4 Tonne
Rescue Pinz: 73' 712M

Driver: Ron // KO0Q

ziegler
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Joined: Thu Mar 13, 2008 9:21 am
Location: oklahoma
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Re: Fuel gauge not working

Post by ziegler » Wed Oct 25, 2017 1:19 pm

Thank you very much

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Jimm391730
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Re: Fuel gauge not working

Post by Jimm391730 » Wed Oct 25, 2017 1:35 pm

While both the sending unit, wiring, and gauge all go bad, in my experience it seems like the gauges fail more often than the sender or wiring. Replacing the gauge was the first "repair" I ever had to do on my Pinz.
Jim M.
712W and 710M

boeing7873
Argentina
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Re: Fuel gauge not working

Post by boeing7873 » Mon Jan 14, 2019 4:06 am

I had a bad sending unit. Quite a job to restore the original unit. But possible. worst case, plenty of options available for replacement.
JC
Jerome
CRJ Driver

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4x4Pinz
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Re: Fuel gauge not working

Post by 4x4Pinz » Mon Jan 14, 2019 7:08 pm

It looks like you have grounded the sending unit but the gauge itself needs a good ground.

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