92 STS Electrical Short or Drain
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HT4100 4.1, 4.5, 4.9 Discussion, 92 STS Electrical Short or Drain in Cadillac Engine Technical Discussion; Ok i am lost on this one. 92 Sts Sevill with 4.9 49k miles. no problems until few weeks ago ...
  1. #1
    jb's92STS is offline Cadillac Owners Member
    Automobile(s): 1992 STS
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    92 STS Electrical Short or Drain

    Ok i am lost on this one. 92 Sts Sevill with 4.9 49k miles. no problems until few weeks ago go out to get in and go and battery dead. charge battery. nothing start pull hot wire off battery died. go buy new battery new alternator 2 days dead. electric trunk lock broke on trio home from alabama done some rigging got it to latch. unplug wiring harness. unplug power antenna , unplug airride suspension. has one aftermaket strut that was on it when bought car last year. no lights are on check in dark no fuses hot control pannel keys out. been going on a month and totally lost. give me something to look for. the body is the new design like 93 and so on.

    thanks for your help.

    jeremyb634@msn.com

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 92 STS Electrical Short or Drain

    Put a 12v test lamp in line between the negative battery cable and the post. Start pulling fuses until it goes out. That component or circuit is where your problem is.

  4. #3
    sunpowered is offline Cadillac Owners Member
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    Re: 92 STS Electrical Short or Drain

    Howdy Ranger, quick question for the test you suggest. I am also looking for a drain short to my electrical system. What if you pull all the fuses and none make the light go out? Is there more fuses other then under the hood and in the truck I may be missing? Or could it be something else? Thanks

  5. #4
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 92 STS Electrical Short or Drain

    Not sure where all your fuses are. I think there are some in the trunk, but you owners manual should tell you.

  6. #5
    sunpowered is offline Cadillac Owners Member
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    Re: 92 STS Electrical Short or Drain

    Well I have a 92 Deville and pulled everything under the hood and all the fuses in the trunk and the light never went out. Any other thoughts as to where to look for a short? Thanks

  7. #6
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 92 STS Electrical Short or Drain

    I'm out of ideas.

  8. #7
    HUF's Avatar
    HUF
    HUF is offline Cadillac Owners Connoisseur
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    Re: 92 STS Electrical Short or Drain

    Quote Originally Posted by sunpowered View Post
    Well I have a 92 Deville and pulled everything under the hood and all the fuses in the trunk and the light never went out. Any other thoughts as to where to look for a short? Thanks
    You should wait at least some 15-20 minutes after the ignition is turned off before measuring the drain.

  9. #8
    sunpowered is offline Cadillac Owners Member
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    Re: 92 STS Electrical Short or Drain

    ok maybe I am mistaken on this test. I did the test between the neg post and cable with a light tester with the key off. and every fuse was pulled and not one made the light go out. So I am assuming the short is before a fuse box. or in a item not fused.

  10. #9
    cadillac_al is offline Cadillac Owners Connoisseur
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    Re: 92 STS Electrical Short or Drain

    There are so many fuses in these cars I don't know if anybody could find them all. Have you changed any interior light bulbs lately? I read here once that a light bulb in a door panel was installed backwards and caused a drain. That's a weird one I never would have found. Good luck.

  11. #10
    behind-bars is offline Cadillac Owners Connoisseur
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    Re: 92 STS Electrical Short or Drain

    cadillac_al may be referring to me with the backwards light in the door killing the battery

    In the Deville (not sure about seville) their is another fusebox under the glovebox beneath the black panels. Just take 2 or 3 of the screws out and the panel comes off and you can see the fuses and several relays. The fuse I pulled which stopped the drain and led me to the door panel was in that box.

    One of the fuses should do it, just a matter of finding it

  12. #11
    sunpowered is offline Cadillac Owners Member
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    Re: 92 STS Electrical Short or Drain

    HAAAA! found the short in mine. Was the Alternator. It had the short in it. All fixed and good to go. Thank god the Alt was still under waranty. Thanks all for the help.

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