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Topic-icon Seneca III fluctuating voltage on left engine

  • Terry Reed
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1 month 2 weeks ago #1673

After extensive and time consuming troubleshooting which included swapping everything from the stable voltage side to the non-stable voltage side in order to get the problem to transfer...we finally found the guilty component. It was the overvoltage regulator. I installed a new Zeftronics unit and adjusted both voltage regulators to 13.8 volts (I was told by a reputable accessory rebuild shop in Tulsa that 13.8 is what is prefer for sealed batteries and 14.2 for the non-sealed) and everything appears to be back to normal. I wish to thank those who weighed in on my problem. And by the way, getting to and removing the overvoltage regulators is a night mare in a Seneca.

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1 month 1 week ago #1674

Terry,
Thank you very much for sending in the solution to this vexing problem.
Sorry it took so long, but very glad you're Seneca is again acting normal.
Best,
Steve

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