- Joined
- Aug 7, 2003
- Location
- San Francisco
That's horrible. I've never experienced dips below 12.5 on my 100A nippondenso alt with the efan on high, ac on, headlights on and stereo blaring.
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In your video, I noticed that your WB02 goes hay-wire when the voltage drops. Is this caused by the voltage drop or is this a sign of a short in your system?
I'd loosen the belts back to where you had them, personally. I am running a single belt and have no slippage with more than 1/4" deflection.
Does the Voltage drop only happen when your AC and fan(s) are on?
Have you tried grounding the alternator's case in a better/different manner? just a quick thought.
I would chase the exciter wire all the way back before condemning the alternator.
Try jumpering the exciter wire to Batt + and see what it does there. I had problems in the dash of my car that took me a bit of work to sort out that would randomly stop charging.
Good suggestion. I jumpered the wire direct to the battery +. Made no difference.
Dave
http://www.optimabatteries.com/_media/documents/specs/34_78.pdf
Specs for my Optima lists open circuit voltage at 12.8. It's a Red Top. The Yellow Tops are 13.1v.
Dave
****. Now I'm out of thoughts.
Talk to Matt today, he should be in the office.
Your batt terms & cables are clean correct? Sometimes just a little corrosion makes a difference under hi load. Then I've seen some so corroroded I did not see how thay could pass current. But they did. 12V DC can act strange sometimes.