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Testing Ohms on sending unit

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Old Jun 17, 2006 | 07:41 PM
  #1  
LtsRace's Avatar
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From: Ocala, FL
Testing Ohms on sending unit

Trying to figure out which fuel level gauge my 98 Chevy truck needs. I thought it was the 0 empty 90 full, but that gauge didnt work. So I took the pump and sending unit out of the tank, and put a voltmeter on it to test the ohms. Its reading 39-40 Empty and like over 200 full. I think its like 240 full.

Problem is, I cant find a gauge for this application on Summits online store...

Does this seem like a correct reading? and can I get a gauge that works?
Old Jun 17, 2006 | 08:08 PM
  #2  
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Re: Testing Ohms on sending unit

Originally Posted by LtsRace
Trying to figure out which fuel level gauge my 98 Chevy truck needs. I thought it was the 0 empty 90 full, but that gauge didnt work. So I took the pump and sending unit out of the tank, and put a voltmeter on it to test the ohms. Its reading 39-40 Empty and like over 200 full. I think its like 240 full.

Problem is, I cant find a gauge for this application on Summits online store...

Does this seem like a correct reading? and can I get a gauge that works?

those ohm readings sound about right

I believe I have seen a gauge(digital) that you could program in the min(E) and max(F) ohms readings


I know you can with the Dakota Digital hot rod gauges
Old Jun 17, 2006 | 08:13 PM
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Re: Testing Ohms on sending unit

OK, I know this autometer C2 gauge will work for you, are you trying to match any other gauges? If you are, I will look into those

http://www.autometer.com/cat_gaugede...gid=2493&sid=2
Old Jun 17, 2006 | 09:37 PM
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Re: Testing Ohms on sending unit

Ive got all Autometer Pro Comp Ultra Lite gauges in the truck so far..So hopefully i can match.. 2 & 1/16 size.
Old Jun 17, 2006 | 09:41 PM
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Re: Testing Ohms on sending unit

This looks like the right numbers but backwards.
http://www.autometer.com/cat_gaugede...id=3092&sid=11
I might need to get on the phone with autometer monday and see what they say.
Old Jun 17, 2006 | 09:56 PM
  #6  
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Re: Testing Ohms on sending unit

Originally Posted by LtsRace
This looks like the right numbers but backwards.
http://www.autometer.com/cat_gaugede...id=3092&sid=11
I might need to get on the phone with autometer monday and see what they say.
there is a listing for a 2 1/16, ultra-light, full sweep electric , programmable(0-280 ohm) here

http://www.autometer.com/cat_gaugede...id=3470&sid=11
Old Jun 18, 2006 | 12:37 PM
  #7  
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Re: Testing Ohms on sending unit

Sweet, I think thats the one I need. Thanks, Ill call Summit tomorrow. Ever hook one of these up? Im sure its not too hard..Im wondering if I should use the wire in my dash or run a new wire from the sending unit.
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