only getting 4.68 volts to gas tank - Team Camaro Tech
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post #1 of 4 (permalink) Old Feb 11th, 06, 03:52 PM Thread Starter
 
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only getting 4.68 volts to gas tank

Yes, I 'm the same guy trying to figure out my fuel gauge. I get a 4.68 volts reading from the trunk with the key on. I then ran a temp wire outside the car to battery and then to fuel wire in trunk and got 12.5 volts. Fuel gauge still didn't move. I then took an ohm reading like everyone suggested on the sending wire that goes through the trunk to tank. (I did not drop the tank) I took it right on top by the rubber boot. It read .06 on a fuel tank. Fuel gauge yet to come of empty. Any Advice?
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post #2 of 4 (permalink) Old Feb 11th, 06, 04:37 PM
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Re: only getting 4.68 volts to gas tank

Seth look here I don't know if you have seen this link or not, it might help https://www.camaros.net/forums/showthread.php?t=73968

Joe

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post #3 of 4 (permalink) Old Feb 11th, 06, 07:47 PM
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Re: only getting 4.68 volts to gas tank

Quote:
Originally Posted by tarheeltime
Yes, I 'm the same guy trying to figure out my fuel gauge. I get a 4.68 volts reading from the trunk with the key on. I then ran a temp wire outside the car to battery and then to fuel wire in trunk and got 12.5 volts. Fuel gauge still didn't move. I then took an ohm reading like everyone suggested on the sending wire that goes through the trunk to tank. (I did not drop the tank) I took it right on top by the rubber boot. It read .06 on a fuel tank. Fuel gauge yet to come of empty. Any Advice?

I finally figured out the trouble with mine.....I had replaced the the sending unit, the o-ring clamp the holds sending unit in place was grounding out....I took oring off attached wires guage worked......I carefully put ring back on tapped into place gage still worked.......If you have changed sending unit, you might want to double check it.

Todd

Todd
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612ci Merlin tall deck, Turbo 400 w/Hughes internals, Hughes 5300 stall converter, 9"rear w/spool, 3.50 gear, Dart intake, Bullet solid roller cam. Dart Pro1 aluminum heads, Holley 1150 Dominator Carb.
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post #4 of 4 (permalink) Old Feb 12th, 06, 01:39 AM
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Re: only getting 4.68 volts to gas tank

OK when the connector in the trunk is unhooked the gauge should go all the way up to Full and past

so that means the problem is either in the wire between the connector and the gauge or the gauge itself
i would unhook the tan wire from the gauge and see what the gauge reads then

if the gauge goes full then the problem is in the wire
check all along the harness for pinched spots, bare wire, or any rubbing

if the gauge does not change and stays on empty then check for both power and ground at the gauge, here i cannot be much help, i dont have a 69 and dont have any idea what the connections back there look like


and the resistance reading you got for the sender (it would be easier for me at least) if you could give some units like is it just straight .06 ohms or is it .06 kilo ohms? mega? milla?

if it is .06 then either your totally out of gas, or the sender (or wire to sender) is grounded

sorry for the long response, hope it is not confusing
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