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Ecklers AutoMotive
Username Post: Fuel gauge not working        (Topic#344213)
Bowtie_Guy 
Contributor
Posts: 274
Bowtie_Guy
Loc: Ohio in the "rust belt"
Reg: 09-04-04
04-22-17 11:34 AM - Post#2687744    

We're having a typical issue with the fuel gauge not working on a 72' Nova without a wiring diagram yet. We've tried cleaning up the ground wire to the body for the sending unit under the body as it disintegrated when moving it around, but the fuel gauge still reads full over. Took a tester to the brown wire in the trunk and got the gauge to move downward, but not sure which direction to go for a faulty connection now. Any opinions on where to go next? I am thinking that ground wire goes to the sending unit in the fuel tank, but before we start yanking the gas tank out I thought I'd ask you all here for help. Thanks....

67' Chevelle SS California car needs much
97' K1500 4X4
72' Nova 350 A/C car (survivor garage kept)


 
Ecklers AutoMotive
62sedan 
Very Senior Member
Posts: 4075
62sedan
Age: 68
Loc: Above the red Texas dirt
Reg: 08-12-02
04-22-17 04:11 PM - Post#2687793    
    In response to Bowtie_Guy

Brian,

If you don't get any answers on this site (as this forum is kind of slow in participation), you might want to post your question(s) here >>>>> http://www.stevesnovasite.com/forums/

Just a suggestion, as I have no personal affiliation with Steve's Nova Site.

Chuck






 
Bowtie_Guy 
Contributor
Posts: 274
Bowtie_Guy
Loc: Ohio in the "rust belt"
Reg: 09-04-04
04-22-17 05:03 PM - Post#2687800    
    In response to 62sedan

Thank you, it's all good. I found my schematic in a manual and I guess my son and I will be dropping the gas tank. I wasn't sure if there was another path the juice might be going (or not going) but it seems the circuit is simply through that sending unit and its not doing its thing. But I'll check out that other site just in case.

67' Chevelle SS California car needs much
97' K1500 4X4
72' Nova 350 A/C car (survivor garage kept)


 
Junkyardwarrior 
Contributor
Posts: 331

Loc: Yuma AZ
Reg: 02-25-15
05-01-17 02:39 PM - Post#2689182    
    In response to Bowtie_Guy

Personal experience there is just the one wire that goes to the top of the tank to the sending unit, then the ground wire that comes off the unit and bolts to the body by the bumper. If the wire broke at the unit on the ground, that'd be a problem. It's also just a weak slip connection plug on the unit, so that could have come loose or have corrosion in it. Most likely cause though, I'd say is probably the sending unit. (P.S. after dropping more of these tanks than I care to admit, take the ground wire off first, and have a spare nut and bolt with washers ready for when the speed nut on the tank straps break, because they probably will)

"8 cylinders of why the f&@% not" - me


 
Ecklers AutoMotive
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