04 ford explorer battery gauage not working, how to diagnose?
needle on gauge does not move, stays below the {low} level, now battery 4yrs old is not keeping charge to start engine after it sits awhile, had alternator checked, ok, battery was at 11.7 volts, had to jump to start, but need to know if gauge is the problem or if new battery will be ok without futher diagnosis, not sure about the gauage or what caused it to quit working awhile ago, any suggestions on what or how to diagnose if gauge is problem or if battery needs replaced, don't want to ruin a new battery either. Thanks