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04-25-2012, 10:33 AM
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#1 |
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Registered User
Join Date: Apr 2012
Location: Lawrenceburg, Indiana
Posts: 3
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72 chevy fuel gauge problem
I have a 72 chevy k20 4x4.
The fuel gauge stopped working one day so I replaced the sending unit, that did not fix the problem so I replaced the fuel gauge itself, still not working, I replaced these with new ones from LMC truck. Any suggestions. Thanks for your help Larry |
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04-25-2012, 07:42 PM
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#2 | |
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The Older Generation
   
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,641
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Re: 72 chevy fuel gauge problem
Quote:
It kind of depends on what you mean by not working... The needle doesn't move at all, or it fluctuates, or goes over past full. Stock tank? More info would help a lot. The wires are known to short out under the drivers side door sill or come unplugged from the fuse box or maybe a blown fuse. You will be looking for a 16ga brown wire... let us know. LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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04-25-2012, 08:37 PM
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#3 |
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Registered User
Join Date: Oct 2011
Location: Victoria, B.C
Posts: 3,794
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Re: 72 chevy fuel gauge problem
Quick questions:
Do you have dual fuel tanks? Do you have a electric/toggle switch for them under/around the dash? If so, try the switch in the other position. (noting that it is a K20...3/4 ton) Coley
__________________
....for some men, there is experience, skill and effort....for the others...there is visa and UPS LOL 1966 Chevy 1/2 ton (Florida- Red/white) 1972 Chevy 1/2 ton (California- Blue/white) 2005 Chevy Silverado HD2500/Duramax 2000 Dodge Ram 1500 |
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04-25-2012, 09:20 PM
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#4 |
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Registered User
Join Date: Apr 2012
Location: Lawrenceburg, Indiana
Posts: 3
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Re: 72 chevy fuel gauge problem
Only one tank and it is stock,the gauge is pointing about at the 9:00 postion and then goes up to empty when the key is turned on and the tank is full. I will check for a short under the door sill tomorrow. The old gauge would go to full when I unplug the brown wire from the sending unit I have not tried that on this gauge yet.
Thanks for your help.. |
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04-25-2012, 10:25 PM
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#5 | |
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Chemist under the hood...
Join Date: Apr 2009
Location: Fort Erie,ON, Canada
Posts: 617
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Re: 72 chevy fuel gauge problem
Quote:
__________________
Current fleet: 2013 GMC Sierra, 5.3L, 4x4 1988 GMC Sierra, 305, Auto 1984 Jeep Grand Wagoneer, 360 V8 1997 VW Cabrio, 2.0L 2017 Toyota Rav4, 2.5L Stuff I wish I still had: 2013 Toyota Matrix [RIP] 1967 GMC 910 Fleetside, 283 V8 [1st Love-SOLD] 1987 Jeep Cherokee Laredo 4X4, 4.0 I-6 [SOLD} 1994 Chevrolet Caprice Classic, 5.7LV8 [SOLD] 1995 Chevrolet Astro AWD, 4.3L V6 (RIP) 1998 Chevrolet Suburban 4x4, 5.7L V8 [SOLD] |
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04-26-2012, 10:50 AM
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#6 |
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Registered User
Join Date: Apr 2012
Location: Lawrenceburg, Indiana
Posts: 3
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Re: 72 chevy fuel gauge problem
thanks for the suggestion I will check it out
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