voltage guage reading very low...below 12- perhaps 9/10 volts. Battery voltage engine off 12vs/ engine running same 12vs... engine running, lights on ,ac on -battery voltage is maintained at 12vs...n

Asked by Jun 15, 2017 at 06:44 PM about the 2001 Dodge Ram 1500 2 Dr WS Standard Cab LB

Question type: Maintenance & Repair

dash volt meter reads lower...8-10 volts, battery reads 12 volts engine off.  battery reads 12vs engine running, with ac,lights brake pedal down...battery still reads a fluttering 12volts.  seems dash gage is too low and charging system not at usual 13.8-14.8 volts charging and under load.  is this a bad alt or internal regulator or some ghost to be chased down.  HELP?   

2 Answers

30,205

HAVE THE SYSTEM vated BATTEY VOLTS BATTERY LOAD ALT AMPS ALT VOLTS STARTER DRAW... GET A CHEAP IF YOU DONT HAVE ONE VOLT METER AND CHECK IT AT THE BATTERY... WITH IT OFF THEN RUNNING..OFF 12- WHAT RUNNING 12,13,WHAT... OR JUST CHANGE OUT THE ALT..CHEAP AND EASY TO DO

64,325

Have the alternator tested.

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