Re: Stus-List faulty fuel gauge or sensor

[Franklin Schenk via CnC-List]

Mike and David
When I worked at Bell Helicopter as a project engineer I spent time at the Yuma 
Proving Grounds doing weapon's testing.  Since we were off site, union rules 
did not apply.  I was able to work with the technicians and they taught me a 
few simple rules.  First jiggle the connector and then check the ground wire.  
I use a backpack when I go to the lake and generally carry my multimeter with 
me.
FrankC 29 

On Saturday, July 23, 2016 10:10 AM, David via CnC-List 
<cnc-list@cnc-list.com> wrote:
 

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body.yiv5861398800hmmessage{font-size:12pt;font-family:Calibri;}#yiv5861398800 
In my world...it seems that all electrical problems are usually ground 
related...

David F. Risch
1981 40-2
(401) 419-4650 (cell)


Date: Sat, 23 Jul 2016 10:25:40 -0400
To: cnc-list@cnc-list.com
Subject: Re: Stus-List faulty fuel gauge or sensor
From: cnc-list@cnc-list.com
CC: persuasio...@gmail.com

Frank
When my gauge stop working it was only a loose ground.

MikePERSUASION
C 37 K/CBLong Sault
On Jul 22, 2016, at 8:45 PM, Franklin Schenk via CnC-List 
<cnc-list@cnc-list.com> wrote:


 Is there a simple way to check out the fuel level sensor to see if it is 
working properly?  The fuel gauge reads zero even though the tank is about half 
full.
Frank

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Re: Stus-List faulty fuel gauge or sensor

[David via CnC-List]

In my world...it seems that all electrical problems are usually ground 
related...

David F. Risch
1981 40-2
(401) 419-4650 (cell)


Date: Sat, 23 Jul 2016 10:25:40 -0400
To: cnc-list@cnc-list.com
Subject: Re: Stus-List faulty fuel gauge or sensor
From: cnc-list@cnc-list.com
CC: persuasio...@gmail.com

Frank
When my gauge stop working it was only a loose ground.

MikePERSUASION
C 37 K/CBLong Sault
On Jul 22, 2016, at 8:45 PM, Franklin Schenk via CnC-List 
<cnc-list@cnc-list.com> wrote:

  Is there a simple way to check out the fuel level sensor to see if it is 
working properly?  The fuel gauge reads zero even though the tank is about half 
full.
Frank___

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Re: Stus-List faulty fuel gauge or sensor

[Persuasion37 via CnC-List]

Frank

When my gauge stop working it was only a loose ground.

Mike
PERSUASION
C 37 K/CB
Long Sault

> On Jul 22, 2016, at 8:45 PM, Franklin Schenk via CnC-List 
>  wrote:
> 
> Is there a simple way to check out the fuel level sensor to see if it is 
> working properly?  The fuel gauge reads zero even though the tank is about 
> half full.
> 
> Frank
> ___
> 
> This list is supported by the generous donations of our members. If you like 
> what we do, please help us pay for our costs by donating. All Contributions 
> are greatly appreciated!
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Re: Stus-List faulty fuel gauge or sensor

[Franklin Schenk via CnC-List]

Thanks.  I know how to read a multmeter.  Now all I need is for the temperature 
to drop below 100 degrees so I don't die from the heat. 
FrankC 29  

On Friday, July 22, 2016 10:06 PM, Josh Muckley via CnC-List 
 wrote:
 

 The fuel level sender is just a variable resistor.  There should be 1 wires 
going to the sender.  The resistance is that felt from the sense  wire to 
ground.  As the level changes the voltage dropped across this resistance 
changes and in turn is registered on the gauge.  The easy way to check the 
sender is to measure the resistance from the sense wire to ground.  Be careful 
not to accidentally measure the resistance of the 12v supply.  I seem to 
remember that the typical moeller float senders are 300 ohm?  So you should see 
between 30 and 300 ohms and most likely at half full something close to 150 
ohms.Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD
On Jul 22, 2016 8:47 PM, "Franklin Schenk via CnC-List"  
wrote:

 Is there a simple way to check out the fuel level sensor to see if it is 
working properly?  The fuel gauge reads zero even though the tank is about half 
full.
Frank
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Re: Stus-List faulty fuel gauge or sensor

[Josh Muckley via CnC-List]

The fuel level sender is just a variable resistor.  There should be 1 wires
going to the sender.  The resistance is that felt from the sense  wire to
ground.  As the level changes the voltage dropped across this resistance
changes and in turn is registered on the gauge.  The easy way to check the
sender is to measure the resistance from the sense wire to ground.  Be
careful not to accidentally measure the resistance of the 12v supply.  I
seem to remember that the typical moeller float senders are 300 ohm?  So
you should see between 30 and 300 ohms and most likely at half full
something close to 150 ohms.

Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD

On Jul 22, 2016 8:47 PM, "Franklin Schenk via CnC-List" <
cnc-list@cnc-list.com> wrote:

Is there a simple way to check out the fuel level sensor to see if it is
working properly?  The fuel gauge reads zero even though the tank is about
half full.

Frank

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Contributions are greatly appreciated!
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Re: Stus-List faulty fuel gauge or sensor

[Tim Goodyear via CnC-List]

Frank,

If you have access to a multi-meter, measure the resistance across the sender; 
it should read about 30 ohms for full and 240 ohms for empty.  An open circuit 
(a bad connection or maybe a faulty sender) would show empty (>240 ohms).

Regards,

Tim

> On Jul 22, 2016, at 8:45 PM, Franklin Schenk via CnC-List 
>  wrote:
> 
> Is there a simple way to check out the fuel level sensor to see if it is 
> working properly?  The fuel gauge reads zero even though the tank is about 
> half full.
> 
> Frank
> ___
> 
> This list is supported by the generous donations of our members. If you like 
> what we do, please help us pay for our costs by donating. All Contributions 
> are greatly appreciated!
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Stus-List faulty fuel gauge or sensor

[Franklin Schenk via CnC-List]

 Is there a simple way to check out the fuel level sensor to see if it is 
working properly?  The fuel gauge reads zero even though the tank is about half 
full.
Frank___

This list is supported by the generous donations of our members. If you like 
what we do, please help us pay for our costs by donating. All Contributions are 
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