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1951 Gas Gauge
#1405643 Sun Apr 11 2021 08:17 PM
Joined: Jan 2021
Posts: 4
P
Moderated
I have a 1951 Chevy 3600. It has been converted to 12 volt. The gas gauge (original) has worked fine up until about a year ago, then just stopped working. When I turn the key from the dead position to accessory position the gauge will “jump” or “twitch” slightly, then return to where it is frozen, at about the quarter full mark. Does this sound like an electrical problem, or the float is bad inside the tank.....or what?


1951 Chevrolet 3600 flat bed white oak bed and stakes
15 yr old grandson working on 1953 Chevrolet 3100 P/U
Re: 1951 Gas Gauge
Pickmeup #1405680 Sun Apr 11 2021 11:33 PM
Joined: Mar 2014
Posts: 2,530
J
'Bolter
Most likely it is your sending unit (inside the tank). If you'll search under this section, you'll see I've done a lot of work on this. If you have the original sender, I can pretty well promise you it has just given up the ghost. If you have one of the foreign-made replacements, I can without doubt promise you it has given up the ghost. Please let me know if you need more info on this.


Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end
Re: 1951 Gas Gauge
Pickmeup #1405710 Mon Apr 12 2021 01:55 AM
Joined: May 2005
Posts: 8,374
B
Sir Searchalot
Originally Posted by Pickmeup
Does this sound like an electrical problem, or the float is bad inside the tank.....or what?
YES.


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Re: 1951 Gas Gauge
Pickmeup #1406693 Mon Apr 19 2021 06:56 PM
Joined: Mar 2019
Posts: 117
T
'Bolter
Did you install a drop-down resistor on the power wire to the gas gauge? I agree that the original gauge and sender will function on 12 volts. The only question is how long.


Rusty
Re: 1951 Gas Gauge
Pickmeup #1406694 Mon Apr 19 2021 07:11 PM
Joined: Sep 2001
Posts: 31,263
Bubba
It is actually a Runtz style voltage reducer. [classicparts.com]. It must be installed in the correct "direction". Just disconnect the existing line at the gauge and connect the reducer - that will assure correct direction.

an explanation [fifthaveinternetgarage.blogspot.com]

here is another one [amazon.com]


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]

Moderated by  Rusty Rod 

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