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Gas Gauge Sending Unit OHM Reading [message #338678]

Mon, 12 November 2018 19:58

Melbo

Messages: 144
Registered: August 2018
Location: Albuquerque NM

Karma: 0

Senior Member

I got the tanks out and they look good inside. I removed the fuel pick up and sending unit to see inside. I will take a better look when I get my scope around. The outside will definitely need to be cleaned up and coated. I acquired a non running coach and would like to check as much as possible as I go so I do not have to revisit things later. With the sending unit on the bench I would like to test it so when it is reinstalled I know it will work. I checked both the operators manual and maintenance manual and I am missing something or it isn't there. What are the ohm number range for the sending unit.

Thanks for the help

Melbo

Albuquerque NM Bus Conversion 1978 MCI 1973 GMC

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Re: Gas Gauge Sending Unit OHM Reading [message #338679 is a reply to message #338678]

Mon, 12 November 2018 20:28

bobby5832708

Messages: 237
Registered: November 2006
Location: Winter Springs FL

Karma: 3

Senior Member

If I remember correctly:

zero ohms = gas gauge on empty
90 ohms = gas gauge on full
open circuit = gas gauge way past full

Bob Heller
2017 Winnebago 29VE
Winter Springs FL

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Re: [GMCnet] Gas Gauge Sending Unit OHM Reading [message #338680 is a reply to message #338678]

Mon, 12 November 2018 20:34

Kosier

Messages: 834
Registered: February 2008

Karma: 1

Senior Member

The range is supposed to be 0-90 ohms on GM senders. HTH

Gary Kosier
77PB w/500Cad
Newark, Ohio

--------------------------------------------------
From:
Sent: Monday, November 12, 2018 8:58 PM
To:
Subject: [GMCnet] Gas Gauge Sending Unit OHM Reading

> I got the tanks out and they look good inside. I removed the fuel pick up
> and sending unit to see inside. I will take a better look when I get my
> scope around. The outside will definitely need to be cleaned up and
> coated. I acquired a non running coach and would like to check as much as
> possible as I go so I do not have to revisit things later. With the
> sending unit on the bench I would like to test it so when it is
> reinstalled I
> know it will work. I checked both the operators manual and maintenance
> manual and I am missing something or it isn't there. What are the ohm
> number
> range for the sending unit.
>
> Thanks for the help
>
> Melbo
> --
> Albuquerque NM Bus Conversion 1978 MCI 1973 GMC
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

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Re: Gas Gauge Sending Unit OHM Reading [message #338681 is a reply to message #338678]

Mon, 12 November 2018 20:54

Melbo

Messages: 144
Registered: August 2018
Location: Albuquerque NM

Karma: 0

Senior Member

Thank You Bobby and Kosier for rescuing me.

I will check them BOTH before they are reinstalled

Melbo

Albuquerque NM Bus Conversion 1978 MCI 1973 GMC

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Re: Gas Gauge Sending Unit OHM Reading [message #338688 is a reply to message #338678]

Tue, 13 November 2018 10:59

jhbridges

Messages: 8412
Registered: May 2011
Location: Braselton ga

Karma: -74

Senior Member

Be sure the rivets are tight. Or drill them and replace with screws/washers/nuts.

--johnny

Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell

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