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Old 12-08-2004, 01:15 AM
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Gas sending unit OHMS?

Anyone know what OHMS range a gas tank sending unit would be (stock) in a 66 GMC pickup? 0-90 ohms, 70-10ohms, 30-180ohms or 240-33ohms? I am getting a new fuel guage but I want to make sure I am getting the right one.

Worst case I suppose I could pull it and measure the ohms based on the leaver being full and empty but I would like to avoid doing that if possible.

Thanks a bunch.

Dylan.

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Old 12-09-2004, 09:41 AM
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Why not do the ohm check yourself? I wouldn't want to guess at something like that. It is a little hassle getting the sender out of the tank but at least I would know for sure.
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Old 12-09-2004, 08:38 PM
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I'm not positive, but, I thought all GM senders are 0-90.


PS:
Did a little more checking and found out,
Pre 1965 0-30 ohms, post 1965 0-90 ohms.

AngliaBob

Last edited by AngliaBob; 12-09-2004 at 08:44 PM.
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Old 12-09-2004, 10:17 PM
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I agree, but this only applies if you are getting a stock GM replacement gauge. If you are getting an aftermarket gauge, it might differ by manufacturer but it should be marked and you can match it to your stock sender.
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Old 12-13-2004, 01:21 PM
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Thanks for the help guys. Much appreciated.
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