From smokey at railops.com  Sat Oct 18 10:54:47 2025
From: smokey at railops.com (smokey)
Date: Sat, 18 Oct 2025 11:54:47 -0500
Subject: [Oletrucks] 1950 3600 gas gauge
Message-ID: <bda9a3d2-d31e-474f-acf8-b543d4864ce9@edison>

 
 
 
For 25 years my gas gauge has worked just fine.    Now the needle shakes all the time, whether the motor is running or not.    As long as the key is on.    Any thoughts?
 

 
Thanks!
 
Smokey Culver, League City, TX
 

 

 

 
 
 
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From miq at bigllama.com  Sat Oct 18 16:22:43 2025
From: miq at bigllama.com (MIQ MILLMAN)
Date: Sat, 18 Oct 2025 15:22:43 -0700
Subject: [Oletrucks] 1950 3600 gas gauge
In-Reply-To: <bda9a3d2-d31e-474f-acf8-b543d4864ce9@edison>
References: <bda9a3d2-d31e-474f-acf8-b543d4864ce9@edison>
Message-ID: <CAASF5jH9LFHGzyMFqjB_vqvHn4hZrZsYxa4pAF=7fTxzJwGadw@mail.gmail.com>

Simple possible solution:  poor grounding connection on the fuel sending
unit, and the back of the instrument cluster.

slightly less simple:  check the contacts on the resistor board (which if
stock is right there in the cabin fuel tank with you), and check the ohms
on the unit by pulling it out and moving the float.  It should top out
around 90 ohms.

Maybe just replace the fuel sending unit as a whole?  I can't imagine that
it is more than $50.

  --Miq



On Sat, Oct 18, 2025 at 9:57?AM smokey <smokey at railops.com> wrote:

> For 25 years my gas gauge has worked just fine.  Now the needle shakes all
> the time, whether the motor is running or not.  As long as the key is on.
> Any thoughts?
>
> Thanks!
> Smokey Culver, League City, TX
>
>
> _______________________________________________
>
> Oletrucks at autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $11.47
> Archive: http://www.team.net/pipermail/oletrucks
>
> Unsubscribe/Manage:
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>
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From bill_hanlon at comcast.net  Sat Oct 18 20:47:49 2025
From: bill_hanlon at comcast.net (Bill Hanlon)
Date: Sat, 18 Oct 2025 21:47:49 -0500
Subject: [Oletrucks] 1950 3600 gas gauge
In-Reply-To: <CAASF5jH9LFHGzyMFqjB_vqvHn4hZrZsYxa4pAF=7fTxzJwGadw@mail.gmail.com>
References: <bda9a3d2-d31e-474f-acf8-b543d4864ce9@edison>
 <CAASF5jH9LFHGzyMFqjB_vqvHn4hZrZsYxa4pAF=7fTxzJwGadw@mail.gmail.com>
Message-ID: <000b01dc40a2$cfdb7d20$6f927760$@comcast.net>

Miq?s hints are valid, but it should top out at 30 ohms, not 90.

 

From: Oletrucks <oletrucks-bounces at autox.team.net> On Behalf Of MIQ MILLMAN
Sent: Saturday, October 18, 2025 5:23 PM
To: smokey <smokey at railops.com>
Cc: oletrucks <oletrucks at autox.team.net>
Subject: Re: [Oletrucks] 1950 3600 gas gauge

 

Simple possible solution:  poor grounding connection on the fuel sending unit, and the back of the instrument cluster.

 

slightly less simple:  check the contacts on the resistor board (which if stock is right there in the cabin fuel tank with you), and check the ohms on the unit by pulling it out and moving the float.  It should top out around 90 ohms.

 

Maybe just replace the fuel sending unit as a whole?  I can't imagine that it is more than $50.

 

  --Miq

 

 

 

On Sat, Oct 18, 2025 at 9:57?AM smokey <smokey at railops.com <mailto:smokey at railops.com> > wrote:

For 25 years my gas gauge has worked just fine.  Now the needle shakes all the time, whether the motor is running or not.  As long as the key is on.  Any thoughts?

 

Thanks!

Smokey Culver, League City, TX

 

 

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