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1997 Cadillac DeVille Question: Battery is good, alternater good, but battery keeps draining

 

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Madam X, Buffalo, NY, April 11, 2009, 16:45
 Rookie

What could be the problem when something keeps pulling the battery down? Usually the car radio & cd player won't work..then the car goes dead after a few days.

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  • Answer #1

    April 13, 2009, 07:17
     Journeyman

    There is something that is draining the vehicle that stays on when the key is turned off. The system should not have more than a 50MA (milliamp) drain on the system. To find the root cause a ammeter will have to be hooked up and fuses pulled until the drain goes away, then each branch of the circuit disconnected until the source of the drain is found.

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