Quote:
Originally Posted by Uncle Possum
Haven't been able to crawl underneath to check the grounding strap, but I did get a voltmeter and checked battery voltage. With engine off, I read 12.6 V, started engine and read 13.1 at idle. Turned on lights, got about 12.9 , with AC about 12.5 (idle) 12.9 at 2000 RPM.
Do these voltages seem right?
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Yes, those voltages are low. A poorly grounded alternator, ie. ground strap, or a voltage regulator would be my first suspicions.
This can easily be checked with a good voltmeter. Check for DC and AC voltages at the battery and terminal strip using the battery as ground as well as the engine block. The presence of AC voltages indicate a diode problem. Low voltages indicate voltage regulator. If you get different readings using the block as a reference from using the battery as a reference, indication of poor connections or ground strap.