Author Topic: Fuel Sending Unit  (Read 2017 times)

169INDY

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Re: Fuel Sending Unit
« Reply #15 on: December 18, 2020, 05:30:30 AM »
Hook up VOM (Volt-Ohm-Meter) either: to the Brown (Tan) wire from Top of sender Other: to the ring terminal on the Black ground lead.
Set Ohm Meter to Resistance, R times 1 (Rx1)

I like to validate performance of the wiring at same time.
Jim
68 SS/RS L35 Th-400 LOS
69 Pace Car L48 Th-350 LOS
68 Z28 M21 LOS

169INDY

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Re: Fuel Sending Unit
« Reply #16 on: December 18, 2020, 05:33:36 AM »
Float lowered.
Empty.
Nom Resistance: 0 ohms,
Jim
68 SS/RS L35 Th-400 LOS
69 Pace Car L48 Th-350 LOS
68 Z28 M21 LOS

169INDY

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Re: Fuel Sending Unit
« Reply #17 on: December 18, 2020, 05:35:44 AM »
Float Mid Level.
1/2 Tank
Nom Resistance: 45 ohms,
Jim
68 SS/RS L35 Th-400 LOS
69 Pace Car L48 Th-350 LOS
68 Z28 M21 LOS

169INDY

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Re: Fuel Sending Unit
« Reply #18 on: December 18, 2020, 05:39:43 AM »
Float Raised.
Full.
Nom Resistance: 90 ohms,

Theoretical Linear Tank curve, Actual Curve would be different.


Jim
Jim
68 SS/RS L35 Th-400 LOS
69 Pace Car L48 Th-350 LOS
68 Z28 M21 LOS

Kelley W King

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Re: Fuel Sending Unit
« Reply #19 on: December 18, 2020, 12:01:22 PM »
Jim, you might want to hang to the old Simpson multimeter. People might be collecting them soon. My comment about the full tank with gauge problems meant that the first thing I do when it does not seem to be working is put gas in it.
69 Z28 RS Scuncio Hi Performance
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169INDY

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Re: Fuel Sending Unit
« Reply #20 on: December 18, 2020, 04:52:12 PM »
LoL, The Simpson Series 260 is what I was trained on & am most comfortable with like an Old 4 speed.

I just wanted to add the "out of tank testing" reference for future searches and troubleshooting.
Jim
68 SS/RS L35 Th-400 LOS
69 Pace Car L48 Th-350 LOS
68 Z28 M21 LOS

Henry Cloutier

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Re: Fuel Sending Unit
« Reply #21 on: December 19, 2020, 09:36:06 PM »

Thank you Jim,

I printed out your ohm/vs gauge chart for reference. Once the new sender is here I'll check it before install.

You guys Rock!!

Hank
Hank

169INDY

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Re: Fuel Sending Unit
« Reply #22 on: December 19, 2020, 11:25:16 PM »
You are Welcome.

I have a 68 that has been pegged (fuel gauge) for a year or so, just need to get it done myself (also)

JIM W
Jim
68 SS/RS L35 Th-400 LOS
69 Pace Car L48 Th-350 LOS
68 Z28 M21 LOS

Henry Cloutier

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Re: Fuel Sending Unit
« Reply #23 on: February 03, 2021, 12:44:21 PM »

Hi everyone,

Just a quick update, the fuel quantity issue was in fact the sending unit. It has been replaced finally and gage is functioning correctly.
Thanks for all your assistance. As usual you all are right on!

Hank
Hank