fuel gauge not grounded? - Team Camaro Tech
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post #1 of 11 (permalink) Old Apr 7th, 05, 06:41 PM Thread Starter
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Joe
 
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Unhappy fuel gauge not grounded?

My 67 camaro fuel guage is registering way past the full line. the needle sits at about 3 o'clock on the dial. I heard that supposedly this happens when the indicator in the tank is not properly grounded. Is it grounded to the frame or to the tank? I have no acess door in the bottom of my trunk and i don't want to have to remove my gas tank to check the indicator unless absolutely necessary. Is there any other reason why my gauge would do this?
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post #2 of 11 (permalink) Old Apr 7th, 05, 10:36 PM
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Re: fuel gauge not grounded?

The sending unit is grounded to the frame at the right front corner of the tank. There is a wire from the unit to a small ground screw into the frame. Also check the guage wire connection that runs to the back of the car by the license plate light, through the trunk floor, and into the rear wiring harness.

John
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post #3 of 11 (permalink) Old Apr 8th, 05, 09:47 AM Thread Starter
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Joe
 
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Re: fuel gauge not grounded?

I found the wire for the ground and cleaned the point where it is screwed to the frame. I also found where a new wire had been spliced on but was just bare wire twisted together. I put on a new splice and tried the gauge, but it still does not work. I tested the continuity between the sender connector in the trunk and the ground screw on the frame and I didn't have continuity. I assume thet means there is something wrong with the sending unit itself.
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post #4 of 11 (permalink) Old Apr 8th, 05, 11:21 AM
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Re: fuel gauge not grounded?

probably... disconnect the wire in the trunk, by the filler panel, and hook a ground wire to that connector in the harness, guage should drop to empty and that will verify the guage and wiring.


Also make sure the wires are in the right place in that connector, they can be crossed, ie fuel guage connected to license plate light. The fuel guage wire is tan.





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post #5 of 11 (permalink) Old Apr 8th, 05, 01:31 PM Thread Starter
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Re: fuel gauge not grounded?

I hooked a ground to the trunk connector and the fuel gauge dropped to empty. Must be the sender.
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post #6 of 11 (permalink) Old May 4th, 06, 05:32 PM
 
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Re: fuel gauge not grounded?

Can the ground wire be installed without removing the tank? Where exactly would it be attached to the unit? I can get my hand on top of the tank so I'd like to try and install my missing ground wire. I have an aftermarket tank with an internal fuel pump...I don't know if that info matters or not.

Another question if I may. I heard my horn relay click when I turn my steering wheel to the left. Ive had an intermittent dead battery problem and have noticed a hot horn relay switch when no keys are in the car. I disconnected the black wire at the relay and no more clicking. I have no horns on the car. I removed the aftermarket steering wheel and the black wire and spring were mangled in there. There's a "tube" that the black wire goes into which is broken and the wire doesn'd stay in. What is that part called with the "tube", I'd like to replace it if it's available for a 69. The piece in front looks like its held on with an O ring...any trick to removing that to get to the part I need to replace? The directional signal swith not operating too well either also thinking about replacing that if possible.

Any help/suggestions greatly appreciated.
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post #7 of 11 (permalink) Old May 4th, 06, 05:41 PM
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Re: fuel gauge not grounded?

No idea on the tank ground with an aftermarket internal tank pump, other than that it has to be there or the sender won't work.

For the horn, you can buy a Grant install kit at autozone and just replace the hub section, or make something up with a peice of a bic ball point pen tube. A pen spring works too if your spring is bent up.





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post #8 of 11 (permalink) Old May 4th, 06, 06:13 PM
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Re: fuel gauge not grounded?

Would it be bad if I grounded mine to the trunk itself? I grounded mine today by drilling into the tank support, just above where the strap connects to the support. The screw does not go into the trunk itself, but into the trunk support. I cleaned it to bare metal, and used a star washer to make sure it is well grounded.

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post #9 of 11 (permalink) Old May 4th, 06, 06:16 PM
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Re: fuel gauge not grounded?

as long as you have a solid connection (the star washer is good) it will ground. Here's a pic






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post #10 of 11 (permalink) Old May 4th, 06, 07:00 PM
 
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Re: fuel gauge not grounded?

Quote:
Originally Posted by JimM
For the horn, you can buy a Grant install kit at autozone and just replace the hub section, or make something up with a peice of a bic ball point pen tube. A pen spring works too if your spring is bent up.
The horn kit doesn't supply this broken tube that the wire w/spring sets into. Being broken the wire and spring doesn't stay in the "tube".
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post #11 of 11 (permalink) Old May 4th, 06, 07:17 PM
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Re: fuel gauge not grounded?

Quote:
Originally Posted by JimM
as long as you have a solid connection (the star washer is good) it will ground. Here's a pic
Thank you Jim, that is exactly where mine is.

Craig


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