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Basic charging/battery question on 1990 240, but question pertains to all models

posted by  HillBilly on  Fri Sep 30 10:35 CST 2011
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last visit: Thu Oct 16 08:26 CST 2014
[RELATED]

First off....What problem are you having?

If you have a good battery and your alternator is charging 14V at idle, you may have a problem with the voltage regulator.

What is the battery voltage with everything turned off?

If you turn everything on....lights, Max. A/C, etc. what is the charge voltage with the engine idling? At 2000 RPM?

steve





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