fuel gauge - Team Camaro Tech
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post #1 of 9 (permalink) Old Jan 9th, 01, 10:01 AM Thread Starter
Join Date: Dec 2000
Location: Richmond, TX, U.S.
Posts: 22

I have a 67 camaro and when I turn the ignition switch to the on position the fuel gauge in the intrument panel goes to the full position, well actually it goes way past the full mark. I think that it does this because the sender is not working properly, i know that it is hooked up but i am not totally sure that there is an actual sender in the tank itself. Anyone know why it may not be working, or do I just need a whole new sender??
zac braaksma is offline  
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post #2 of 9 (permalink) Old Jan 9th, 01, 10:21 AM
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Join Date: Nov 2000
Location: So. California USA
Posts: 202

The fact that your guage max's out is an indication you might have a bad ground. The sending unit is in the gas tank. The hot wire is located in the trunk and runs off of the rear light wiring harness. The wire itself comes off a 2 wire connecter and goes through the trunk floor in front of the gas filler tube. If you disconnect this, your guage should go to empty. The ground wire should be located on top of the tank near the passenger side. It connects to a screw or bolt near the front of the tank strap. Check to make sure you have a good ground. Aside from dropping the tank and pulling the sending unit, I don't know how to test it. Do a search on this subject. It was discussed in detail in mid December. I had the same problem and it eneded up being the ground wire.


[This message has been edited by Mike67RS (edited 01-09-2001).]
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post #3 of 9 (permalink) Old Jan 9th, 01, 10:52 AM Thread Starter
Join Date: Dec 2000
Location: Richmond, TX, U.S.
Posts: 22

thanks for the information, i did do a search and i found what i needed, or what i think i need. I will get my car back in about a week, thanks again
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post #4 of 9 (permalink) Old Jan 9th, 01, 12:51 PM
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Join Date: Jun 2000
Location: Summit, MS
Posts: 646

On a 67 (as with my 68) the hot wire to the sender is tan. I don't know what color the ground is.

68, 327, TH350 (assembly in process)
Brad74 is offline  
post #5 of 9 (permalink) Old Jan 9th, 01, 01:20 PM
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Join Date: Dec 1999
Location: Winston Salem, NC
Posts: 297


Definitely sounds like a ground problem. Also, check the ground on your guage cluster. The center screw above the bright light indicator goes through a little wire loop that connects to the printed circuit board on the guages. The loop gets squished against the metal dash when the screw is tightened, supposedly grounding the instrument panel. If this ground is iffy, your guage lights may still work, but the gas gauge may not. I had this problem in my 67, and cleaning and manipulating the little wire loop did the trick for me. If you have any questions about this, email me.....I've had my guage cluster out several times and have got it down to a science now.

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-1967 Camaro SS350

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post #6 of 9 (permalink) Old Jan 10th, 01, 09:50 AM
Join Date: May 2000
Location: Saltillo, Mississippi USA
Posts: 18

I had a problem on my 69 and it was the plug on my gauge needed cleaning.
smallblock is offline  
post #7 of 9 (permalink) Old Jan 10th, 01, 10:25 AM Thread Starter
Join Date: Dec 2000
Location: Richmond, TX, U.S.
Posts: 22

Thx for all the help, i can mess with it until about a week when it gets out from having work. I know that the ground in the cluster is not there so i will have to put one there. I am not sure about the other ground from the tank. Thanks again
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post #8 of 9 (permalink) Old Jan 11th, 01, 09:04 AM
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Join Date: Dec 2000
Location: Monroe, WA, USA
Posts: 312

instead of droping the tank..if you want to..there is a spot in the trunk that you can knock out to get at the sending unit...they used to do that at dealership's, saved on labor time and they made more mony that way...you just tac weld it back in place..i bet if some of you look in your your first gen trun's you will see a knock out and it is tac welded...not all but some..if you are not trying to make the car perfict..i would do this and it was a comon practice back then..it was normaly brazed back to gether..and that is a form of welding .
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post #9 of 9 (permalink) Old Jan 13th, 01, 10:50 AM
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Join Date: Dec 2000
Location: Kentwood, MI
Posts: 8,097

It sounds like a bad ground to me too. Don't forget that there are two grounds to check. One for the gauge - somewhere in your console and one for the sending unit. Both ground to the chasis. I would suspect the one from the sending unit - it is a black wire on my 68 and connects with a small sheet metal screw to the bottom side of the trunk near the front, passenger side of the gas tank. Because of the location it is prone to corrosion.
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