[Spridgets] Fuel Gauge and Float Check

Chris Manuel cmanuel at wi.rr.com
Sun Nov 15 18:57:29 MST 2009


Can a broken sender "kind of" work, or is it all or nothing?  Mine is either
full (when full) and then drops to about 1/3 and acts normally I think.

Chris

-----Original Message-----
From: spridgets-bounces at autox.team.net
[mailto:spridgets-bounces at autox.team.net] On Behalf Of Frank
Sent: Sunday, November 15, 2009 7:27 PM
To: Hotmail
Cc: spridgets at autox.team.net
Subject: Re: [Spridgets] Fuel Gauge and Float Check

Hotmail wrote:
> Hello Group.
>
>  
>
> I have recently purchased a '73 Midget with a broken fuel gauge. As a
winter
> project I would like to "fix" it. How do I "test" the circuit - gauge and
> float outside the car? Having 2 of each I check continuity with an Ohm
meter
> and the reading was full scale.  I than hooked up one pole of the fuel
gauge
> to the Bat + the second to the + pole on the float and second to ground. I
> do not get any reading on the gauge when I move the lever on the float.
What
> am I doing wrong? 
>   
I check them with a 12v DC power supply on the work bench.
12v + to the "B" terminal of the gauge,  12v- to the body of the gauge 
(ground)
Also 12v- to the body of the sender and a wire from the terminal of the 
sender to the "T" post on the gauge.
Now slowly move the float up and down and watch the gauge.
99 out of 100 times, it's a bad sender.
The 73 does have a voltage stabilizer in line from the battery to the 
gauge, you do not need this to bench test the set up but the readings 
will be off a little without it.
If you get an empty reading on the bench with the float down, and a full 
reading with it up, it's good.


-- 
Frank Clarici
Toms River, NJ
My own Fleet of Sprites
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