Question about 1999 Buick Park Avenue

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Something keeps killing my battery - 1999 Buick Park Avenue

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  • redbone910 Sep 01, 2010

    no it does not i drive it every day

  • redbone910 Sep 01, 2010

    no it does not i drive the car every day

  • redbone910 Sep 01, 2010

    my car does not sit up i drive it every day i had the starter checked i had the alternator checked an changed my battery 3 times what could still b killing my battery

  • redbone910 Sep 01, 2010

    i have checked everythinh under the hood an the fuese an my battery keeps going dead

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The only way to find the problem is is to hook up a amp meter and then seeing the draw start pulling fuses until the draw goes away.. Its possible also that you have a bad battery even tho it tested good, that is if you had it tested yet, which would be the first thing to do. Also that same test for the battery will test the alternator. A bad diode in a alternator can cause a draw also even tho the key is out of the vehicle.
Last choice is you have a body control module not shutting things down after the key is removed. This would require a replacement computer or BCM as they call it.

As you can see about the only thing you can do at home is get the charging system checked out. Without the knowledge and tools and information there really isnt much you can do at home other than guess.
If you have 12 volt meter place it on the battery and crank after the battery is charged. Since you don;t want it to start for this test unhook the ignition module connector. If the voltage drops below 11 volts you have a bad battery..

Posted on Sep 01, 2010

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You have a hidden consumer, one that is constantly on when it shouldn't. To find out which you will need an ampmeter and a lot of time you are going to test every single wire in your car. Put the ampmeter between the - of the battery and the - cable that goes to the body and disconnect every cable attached to the battery. Now start attaching them - when the ampmeter will show a flow of current then you will know that the hidden consumer is on that cable. Go to the next connector on that cable and disconnect it - if the current stays then the consumer is somewhere in between, if not then it's after that connector.  Keep searching till you find it - when you disconnect a wire that is attached to only one final consumer and the current stops.
Since this is going to take some time, to prevent the death of the battery, from now on disconnect the battery before the night and plug it back in the morning.

Posted on Sep 01, 2010

  • Azrael SRL Sep 01, 2010

    If it's not under the hood then it's under the dash - have you checked there the consumers that stay open  even after you have turned the key off (like the radio, the interior lights and the alarm)?

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Does the car set up alot? Some time electrical clocks etc. will run down a battery if it sets for a while.

Posted on Sep 01, 2010

  • juniorespiti Jan 13, 2011

    i had the same problem its the cars factory amplifier located in the trunk on the drivers side on the upper part of your trunk, so unplug it you can do it yourself then relace when you have the money trust me it will be expensive if not go ahead and put an after market amp use a alpine it works great on my car it really sounds like the original with no distortion at all youll need a proffesionall installation for that

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