1985-1998 [Subscribe to Daily Digest] |
of the electrical power system. when ignition in "run" position but not started it is ads you say just reporting battery voltage. when the engine is just started you will see the indicator for about 5 seconds indicate the voltage just after starting that voltage gives a slight indication of the health of the battery ie. if it drops significantly you has a little idea that the battery capacity is not too good but if it stays about the same no problems. Voltage indications below 9 volt indicates a battery going bad provided you haven't been draining it with doors open lights on for long periods of time. When you sy=tart the engine and voltage quickly improves you hav the indicaton that the alternator is working well and that your battery is recovering nicely. about the max you will ever see everything in excellent and cool weather is 14.2-.3 normal in hot weather is about 13.4-.7. on the road with 10 -11 volts indicate pending problems
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