NHTSA Complaint #729216 — 1992 PONTIAC BONNEVILLE

VOLTAGE FALLS AND MOTOR QUITS IN HEAT. BATTERY IS DEAD. REPLACING ALT & BATT DOES NOT HELP. VOLTAGE GETS LOWER AS HEAT BUILDS UNTIL BATTERY DIES. ENGINE FALTERS AND QUITS. HAS HAPPENED 8 TIMES SINCE THE WARRANTY EXPIRED (DIDN'T HAPPEN BEFORE). SSEI DOES NOT HAVE A VOLTMETER AND WE HAVE NOT SEEN THE BATTERY LIGHT COME ON IN ANY OF THE EVENTS (THOUGHT IT IS WEAK AND HARD TO SEE SO WE CAN'T BE SURE). DEALER KNOWS NOTHING. WE HAVE NOT FOUND A SERVICE BULLETIN ON THE PROBLEM. I INSTALLED THE 130 AMPERE OPTION ALTERNATOR (FOR CARS WITH ELECTRICALLY HEATED WINDSHIELDS) THE LAST TIME AND HAVE BEEN MONITORING THE VOLTAGE. THE VOLTAGE DROPS STEADILY AS HEAT BUILDS, BUT SEEMS TO STOP AT ABOUT 13 VOLTS (I DIDN'T ADD VOLTMETER BEFORE GOING TO THE LARGER ALTERNATOR SO I DON'T KNOW HOW LOW VOLTAGE WENT IN EARLIER EVENTS .. THOUGH I DID EXPERIEMENT WITH SEMI-DEAD BETTERY AND THE ALTERNATOR DISCONNETED AND THE ENGINE QUITS AT ABOUT 10 VOLTS). I SEE OTHER COMPLAINTS ON THIS PROBLEM ON YOUR WEB SITE AND I'VE TALKED TO SEVERAL OTHER SSEI OWNERS WITH THE SAME PROBLEM. ALL HAVE REPLACED ALTERNATOR AND/OR BATTERY TO NO AVAIL.