How do you tell if an alternator is going bad on 1999 Chrysler tc?

Answer:
Start the vehicle up and place a volt meter on the battery. Turn the headlights and heater on if the meter drops below 12.5 volts the alternator is weak or going bad. If meter is unavailable start vehicle turn lights on and remove psitive cable off of battery. If the cars dies alternator is bad... You might want to check inline fuses and fuse block to check for blown circuits before removal
First answer by ID2325905460. Last edit by ID1257606654. Question popularity: 1 [recommend question].