1996 Pontiac Bonneville sudden electrical power loss

1996 PONTIAC BONNEVILLE
78,000 MILES • 6 CYL • FWD • AUTOMATIC
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GMORRIS39
  • MEMBER
  • 3 POSTS
MY1996 BONNEVILLE WILL LOSE SOME ELECTRICAL POWER. THIS HAPPENS WHEN SLOWING DOWN FOR A STOP OR WHEN IDLING. THE CAR WILL SOMETIMES STALL WHEN THIS HAPPENS BUT ALWAYS STARTS IMMEDIATELY. I REPLACED THE ALTERNATOR THINKING THE PROBLEM WAS CAUSED BY THE VOLTAGE REGULATOR, BUT, THE PROBLEM STILL EXISTS. ANY ADVICE ON THIS PROBLEM IS GREATLY APPRECIATED.
Jan 1, 2010 at 5:28 PM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
hi, I'd check the charging system, engine running. If there is a problem with wiring circuits, to or from the alternator. Replacing the alternator won't fix it. Also, have the trouble codes checked. Some of the national brand autostores will check codes for free, if there are any?
Jan 2, 2010 at 4:22 AM
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