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Old 09-12-2013, 02:22 PM
gmaxburge gmaxburge is offline
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Unhappy Fuel guage registers full all the time

I have a 1969 Pontiac Grand Prix and the fuel guage registers full all the time. I have replaced the sending unit in the tank but problem still remains. What will it take to resolve this issue?

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Old 09-12-2013, 03:43 PM
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74gto 74gto is offline
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This usually happens when you're loosing the ground somewhere, usually at the top of the tank where the sending unit goes into the tank.

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Old 09-16-2013, 02:29 PM
gmaxburge gmaxburge is offline
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I will check the connections at the top of the tank. Is there a separate ground wire for the sending unit? Thank you for your feedback.

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Old 09-17-2013, 02:21 PM
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74gto 74gto is offline
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Yes, the ground will go from the ring of the sending unit to a chassis ground somewhere in the trunk floor area.

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74 GTO 406 T400
74 Firebird 350 4-speed
68 GTO Convertible 400 T400
76 GP LJ 400 4BBL T400
78 Chevy 1/2 Ton Truck
Oh yea I love my wife very much
For some reason it got erased when I put it here last time!!!!!! hmmmmmmmm
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