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68 camaro stock fuel gauge pegged past full
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DRR Sportsman
Picture of fast frank
posted
gauge sitting at about 3 oclock, checked and cleaned ground wire at tank where it attaches to body, what next?
 
Posts: 728 | Location: pa. | Registered: December 21, 2005Reply With QuoteReport This Post
DRR Pro
Picture of Eman
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GM gauge works by tank unit controlling resistance to ground 0 to 100 ohms. You need to access the wire to the tank unit. With the key on you should have power on it and if you ground it gauge should go to empty.
 
Posts: 1443 | Location: E TN | Registered: February 13, 2009Reply With QuoteReport This Post
DRR Sportsman
Picture of 23taltered
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Shouldn't the gauge go to full if you ground it?


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Posts: 163 | Location: Northern Cal | Registered: January 06, 2000Reply With QuoteReport This Post
DRR Pro
Picture of Eman
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Should go to empty if you ground the wire from the gauge, goes past full if open.
 
Posts: 1443 | Location: E TN | Registered: February 13, 2009Reply With QuoteReport This Post
DRR Sportsman
Picture of fast frank
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quote:
Originally posted by Eman:
Should go to empty if you ground the wire from the gauge, goes past full if open.

so it should have 12 volts in trunk tan wire key on?
 
Posts: 728 | Location: pa. | Registered: December 21, 2005Reply With QuoteReport This Post
DRR Pro
Picture of Eman
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If that's the wire that comes from the gauge to the tank unit. I can't remember if it will have 12v or if it's less. It should light a test light.
 
Posts: 1443 | Location: E TN | Registered: February 13, 2009Reply With QuoteReport This Post
DRR Top Comp
Picture of wideopen231
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hell fuel gauges go to full? Wish you could teach my truck that trick.




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Posts: 4133 | Location: Greensboro NC | Registered: May 24, 2011Reply With QuoteReport This Post



DRR Pro
Picture of Goob
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Standard test light at the tank should get you about 1/2 full reading.....all GM's were on a 90ohm gauge scale.
Doesn't work that way on Phords and Chryslers. They will have a 12v pulse from the CVR in the gauge panel, grounded wire at the tank will get a full reading.


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Posts: 1554 | Location: Indy | Registered: November 21, 2008Reply With QuoteReport This Post
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