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Ls3 voltage problem

 
Old 07-18-2018, 03:30 PM
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NOHA
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Default Ls3 voltage problem

Installed an ls3 engine with gm wiring and ecu in 67 vette using dakota digital gauges.

Everything works great except voltage with reads 17+volts as soon as i start it and then settles to 14 volts and as soon as i drive it or rev engine it goes back to 17+. Alternator has been checked off engine and is fine. Seperate checks of battery and dakota bim are in 13-14 range with engine off.

I understand ecu controls voltage

any suggestions - other than that car runs fantastic
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