Still having regulator issues

[VA Chris]

Recap: 1998 ELPTO 115hp Mercury (low hrs) serial number OG604258. I installed a new regulator because my voltage was erratic but nothing has changed. I hooked up the regulator as instructed and I still have the same problem which is voltage not regulated. When I read the voltage at the battery when the engine is off I get 12.75 volts. When started and idling in neutral the voltage jumps all over the place i.e. goes from 12 volts to 18 volts and everywhere in between changing about 5 times per second. So very fast fluctuating voltage. This is the same thing it was doing before changing out the regulator. Please, any help is appreciated.

 

[Sean Troy]

Short in a battery cell.

 

[Scott Hammer TOXIC]

Email BobB directly at USA Marine. He will be able to answer. Im not a good enough wrench to troubleshoot your problem. Or you could go over to BBC on the Merc board and ask Don Weed. He also is in the biz and a crackshot mechanic.

 

[VA Chris]

Tox, you have an email address for Bob? I had it but cant find it.

 

[VA Chris]

Never mind, I got it and sent Bob an email

 

[Scott Hammer TOXIC]

Keep us posted.