1992 Cadillac Fleetwood charging problem

1992 CADILLAC FLEETWOOD
147,000 MILES • 4.9L • V8 • FWD • AUTOMATIC
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TIMMY BOY
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  • 2 POSTS
Had to jump start it. New battery, new alternator. Got down road a mile and all dash lights went out and then died. Completely dead. But I can let the car sit and idle, and it will be fine. Now the car has sat for many years due to fuel pump failure. It belonged to my late grand father.
Jan 10, 2014 at 10:16 AM
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WRENCHTECH
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  • 20,761 POSTS
First charge and test the battery and once you have a fully charged battery and you get it running, test the charging system.
Jan 10, 2014 at 11:55 AM
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TIMMY BOY
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  • 2 POSTS
OK battery fully charged 12.2 , did load test came back good. Hooked battery up and started it. Battery dropped to 11.3. New alternator new battery.
Jan 10, 2014 at 1:33 PM
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WRENCHTECH
  • CERTIFIED EXPERT
  • 20,761 POSTS
OK, so your charging system isn't working. You also don't have a fully charged battery at 12.2. It should be 12.6 for a good battery. Now you have to determine why the charging system isn't working. Test for power at the main terminal with the key OFF.
Jan 10, 2014 at 1:44 PM