The Ford Barn

AnthonyG · 10-15-2015, 03:49 PM

Have a single wire alternator and output seems low to me. Just barely sending 12V to battery? Electrical tester indicates good fully charged battery s/b at13.5 plus volts. Shouldn't the alternator be sending that much at least to the battery?

CT AV8 · 10-15-2015, 04:03 PM

Did you rev the engine before testing it. The single wire alternator needs around 1,500 rpm to excite it.

Ford Freak · 10-15-2015, 07:17 PM

Yes, take rpm's up , then see what you have .

AnthonyG · 10-15-2015, 07:43 PM

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Thx, will check tomorrow.

10-15-2015, 03:49 PM	#1
AnthonyG Senior Member Join Date: May 2013 Location: Pa. Posts: 2,217	Alternator output barely 12V? Have a single wire alternator and output seems low to me. Just barely sending 12V to battery? Electrical tester indicates good fully charged battery s/b at13.5 plus volts. Shouldn't the alternator be sending that much at least to the battery? __________________ Nomad

10-15-2015, 04:03 PM	#2
CT AV8 Senior Member Join Date: Sep 2010 Location: Cos Cob, CT Posts: 295	Re: Alternator output barely 12V? Did you rev the engine before testing it. The single wire alternator needs around 1,500 rpm to excite it.

10-15-2015, 07:17 PM	#3
Ford Freak Senior Member Join Date: Feb 2013 Location: Pittsford NY. USA Posts: 1,249	Re: Alternator output barely 12V? Yes, take rpm's up , then see what you have .

10-15-2015, 07:43 PM	#4
AnthonyG Senior Member Join Date: May 2013 Location: Pa. Posts: 2,217	Re: Alternator output barely 12V? Sponsored Links (Register now to hide all advertisements) Thx, will check tomorrow. __________________ Nomad