...am getting alow voltage reading when i first start my car the voltage is reading correctly at 14 volts after i drive about 20 minutes it goes from 14 to 9 volts then it goes back to about 12 volt it gets worst when i step on brakes or use indicators, the car shuts off when the volts drops to low i have changed alternaters six times but the results are the same. IS THERE A MANUFACTURE PROBLEM WITH THIS CAR. PLEASE HELP . THANKS FOR ALL RESPONES.