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#1
01-09-2007, 09:27 AM
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Puzzling
1996 C220. Battery light (dummy) comes on when starting engine. It goes out after a mile or so of driving. Sometimes it comes back on for a short time. I've checked the volts to the battery. With engine NOT running battery registers 12.3 volts; with engine running and dummy light on it registers 14.2 volts.
What should the voltage be? Current volts doesn't appear out of line at all. Am I missing something? Any ideas?
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Rev. Dr. G. Church of the SubGenius It doesn't take a genius 
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#2
01-10-2007, 10:06 AM
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I would check for corrosion on both the battery terminal wires and the recharge wire coming from, the alternator. Also could be a weak alternator that drops voltage on occassion (thus the light turns on)
Good luck
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