Battery is draining, what could it be?
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Electrical Technical Information Discussion, Battery is draining, what could it be? in Item Specific Cadillac Discussion; In my '81 Sedan DeVille the battery has been draining and going dead, if it just sits a couple days. ...
  1. #1
    rollerz70 is offline Cadillac Owners Fanatic
    Join Date
    May 2004
    Posts
    105

    Battery is draining, what could it be?

    In my '81 Sedan DeVille the battery has been draining and going dead, if it just sits a couple days. I've been jumping it and letting it run for 15-20 minutes when this happens. Usually I can let it sit one day and it will still have enough juice to start, but if I don't start it everyday then by the second day of letting it just sit the battery is almost dead. The battery I have in it is pretty much brand new. Bought it about a year ago for another one of my cars, but the battery just ended up sitting. So I charged the battery before I put it in the DeVille. What could be drawing all the charge from the battery? Thanks for any help.

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  3. #2
    brougham is offline Cadillac Owners Master
    Automobile(s): 1991 Cadillac Brougham D'Elegance 5.7 Litre
    Join Date
    Jun 2003
    Location
    Canada
    Posts
    5,513

    Re: Battery is draining, what could it be?

    The battery could be bad. Especially if it was sitting low for a while. Get that and the charging system checked first, then start looking for other problems.

  4. #3
    kdybread is offline Cadillac Owners Member
    Join Date
    Jun 2004
    Posts
    26

    Re: Battery is draining, what could it be?

    when mine was doing that, it was the electric antenna module that was jolting all night every 15 minutes or so..took me a month and a lot of wasted money to figure it out, but we just disconnected the antenna motor and it worked fine.

  5. #4
    rollerz70 is offline Cadillac Owners Fanatic
    Join Date
    May 2004
    Posts
    105

    Re: Battery is draining, what could it be?

    Well the other day I went to go jump start my car, I let my other Caddy,'84, run for about 5 minutes, hoped in my '81 and tried to start it. It wasn't even turning over! So I let it charge for a few more minutes, made sure that the jumper cables were on tight, got back in and it tried to turn over. At this time I checked the fuse box and pulled out the power antenna fuse, gave it about 1 minute and the car started right up! So now I know that the power antenna was the problem. Now just have to recharge the battery and see if the battery is still good to hold the charge from sitting so long. Thanks for the help!

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