Fuel gauge pegs full
I have read several posts on the fuel gauge issue. However, I am a bit confused as to where to start the troubleshooting. The reason for my confusion is that I tested the sending unit in a friends car prior to installing in my tank. On my friend's Chevelle, the sending unit operates very well with the fuel gauge. On my car the fuel gauge pegged past full as soon as we turned the key the first time. Should I start with the fuel gauge, or could this be a bad ground? The ground wire is connected to the body, on the support that runs under the trunk. We sanded the spot where the wire is grounded prior to installing. Appreciate the help.
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TC Member #5479