Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Just looked at today. 17 volts @idle with the alternator connector disconnected. 13 volts on battery with both cables disconnected.
New battery just installed for this condition I am told. Looking at again tomorrow, I am thinking another power source somewhere.
Any thoughts? Thanks all.
Just got thinking about this.I will
Disconnect alternator B+ and see what the result is. I will post what happens.
Last edit: 6 days 6 hours ago by bills4065. Reason: additional info.
Thanks Noah-it is the alternator.Threw me off for a bit because with main connector disconnected 17.5 volts. When first checked 17.5 volts at idle that is when I thought I will take alternator out of picture by disconnecting
the alternator. Same voltage lol. Thought this through for a bit and more chapter 1 universal testing methods clicked in. Paul's book and you and people like Tyler make you stop, think about it for a few minutes and it will fall in to place.Again thank you Noah for the chime in.
Topic Author
