1964 Oldsmobile Jetstar 88 fuel gauge ohms

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Nov 22, 2025 | 07:22 AM

330jetstar

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Joined: Mar 2017

Posts: 230

1964 Oldsmobile Jetstar 88 fuel gauge ohms

Looking to get a new autometer fuel gauge for my car, what's the ohm rating on the factory sender. 30 ohms I believe I have read before.

Nov 22, 2025 | 08:08 PM

joe_padavano

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Joined: Mar 2007

Posts: 50,852

From: Northern VA

1964-older GM fuel senders are 0-30 ohms. That's 0 at empty and 30 at full. 1965-up GM are 0-90 ohms. Most aftermarket gauges are 240-0 (240 ohms empty and 0 ohms full).

Nov 25, 2025 | 06:19 PM

cjsdad

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Joined: Sep 2010

Posts: 1,665

From: Norfolk, Va

Quote:

Originally Posted by joe_padavano

1964-older GM fuel senders are 0-30 ohms. That's 0 at empty and 30 at full. 1965-up GM are 0-90 ohms. Most aftermarket gauges are 240-0 (240 ohms empty and 0 ohms full).

Joe, I have an aftermarket gauge that says it is 0-190 ohm. Is it possible to make that work together with the factory 0-90 ohm sending unit, or is there a 0-190 sending unit that you know of?

Thanks