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voltage mystery
Posted by Dan-O (more from Dan-O) on Sat, 18 Apr 2009 10:08:40
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1991 9000T, 133k. This car sat for a very long time before I bought it. I put in a new battery. It has the 115amp alternator, not sure how old.
My readout on the dash is telling me far lower voltage than what I measure under the hood. With the engine running, I am consistently getting just under 14 at the battery on the voltmeter. But when I look inside at the dash, it says 7.9.
The VR seems to be 'regulating.' When I rev the motor, the reading at the battery stays solid at 13.8, 13.9, etc. It doesn't move on the dash, either. And FWIW, the ground wire on the alternator looks fine.
What's going on here?
Thanks!
--Dan
posted by 71.205.9...
Posts in this Thread:
- voltage mystery, Dan-O, Sat, 18 Apr 2009 10:08:40 <-- Viewing This Message
- I've found the display lies at first, External Volt Reg, gavin, Fri, 24 Apr 2009 11:27:41
- Re: voltage mystery, oldsaab, Sun, 19 Apr 2009 20:01:06
- Re: voltage mystery, Ken Fisher, Sat, 18 Apr 2009 11:36:49
- Wiring Diagram, marvinstockman, Sat, 18 Apr 2009 11:20:13
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