So I am troubleshooting my fuel gauge issue. I bought a new sender and tested it. It  it goes from 1-ohm (empty) to 35-ohm (full). When I test it (outside the tank), when the float is in the up (full) position it only moves the gauge to about 1/2 full. When at the bottom (empty) position the gauge shows empty. This is the same issue I have when I fill and then use the gas in the tank - the gauge never reads ore than half full. Based on what I've read on this thread it would seem like the gauge, not the sender is the issue - do others agree?

If so, anyone got a source for the gauge? Is it easy to replace?

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Comment by Jason Edge on August 27, 2020 at 7:56am

I would pull and test the gauge before replacing it. 15 ohm should put it right at the half tank mark and 30 ohm just past the full mark. 

Comment by Tony and Ginny 429 on August 26, 2020 at 8:00pm

Add Kurt to the helpful list -nice reference post regarding the fuel gauge reading calibration 

Enjoy 

Comment by Russ Austin on August 26, 2020 at 7:42pm

I have had minimal success calibrating the gauge. Bets to get a gauge that is know to work correctly.  I have them for 40.00

Or you can try your hand at adjusting the gauge.  Remove the  dash pad and gauge pod. There is a small arm above the coil on the gauge. Bend it closer to the coil.  I dont think you will have success since the gauge is so far off. 

If you want the gauge, send me an email;  russ85747@hotmail.com  I will need your zip code for a shipping quote. 

Comment by Kurt on August 26, 2020 at 4:53pm

Could be gauge calibration. There is some information in the Help section on the topic.

http://6364cadillac.ning.com/profiles/blog/show?id=6543066%3ABlogPo...

Comment by Tony and Ginny 429 on August 26, 2020 at 4:40pm

Jason or Russ should be very helpful to help get your gas gauge to work correctly 

They do some sort of a calibration to get the gauge to read correctly and have parts if you need them 

Enjoy 

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Bad Guage?

Posted by Karl Schwarz on August 26, 2020 at 3:08pm 5 Comments

So I am troubleshooting my fuel gauge issue. I bought a new sender and tested it. It  it goes from 1-ohm (empty) to 35-ohm (full). When I test it (outside the tank), when the float is in the up (full) position it only moves the gauge to about 1/2 full. When at the bottom (empty) position the gauge shows empty. This is the same issue I have when I fill and then use the gas in the tank - the gauge never reads ore than half full. Based on what I've read on this thread it would seem like the…

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