2005 STS only starts when it wants??
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Cadillac STS Forum - 2005 through 2012 Discussion, 2005 STS only starts when it wants?? in Past Cadillac Vehicle Discussion; i have a 2005 STS v6 and sometimes it will not start. sometimes i have to take off the ground ...
  1. #1
    Dan05STS is offline Cadillac Owners Member
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    2005 STS only starts when it wants??

    i have a 2005 STS v6 and sometimes it will not start. sometimes i have to take off the ground to the battery for a minute reconnect and it will start up. anyone ever have this issue and can tell me how you resolved it. I will appreciate any help, Thanks

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  3. #2
    dkozloski's Avatar
    dkozloski is offline Cadillac Owners 10000+ Posts
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    Re: 2005 STS only starts when it wants??

    Take the car to your local parts dealer and have them read out the trouble codes for you.
    Don't mess with Binky Bear!


  4. #3
    Dan05STS is offline Cadillac Owners Member
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    Re: 2005 STS only starts when it wants??

    Well I guess no one in this entire forum has ever heard of this problem thanks for nothing, Oh and I wasnt asking anything about trouble codes but thanks anyway.

  5. #4
    Ludacrisvp's Avatar
    Ludacrisvp is offline Cadillac Owners Connoisseur
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    Sounds like weak battery or poor connections.

  6. #5
    EChas3's Avatar
    EChas3 is offline Cadillac Owners Master
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    Re: 2005 STS only starts when it wants??

    Koz's advice is sound. It is probably setting a code when it doesn't start. It could be juice like 'crisp suggests or any number of sensors.

    You asked for help and a free idea was offered. What do you want for nothing?

  7. #6
    dkozloski's Avatar
    dkozloski is offline Cadillac Owners 10000+ Posts
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    Re: 2005 STS only starts when it wants??

    Sometimes you just have to consider the source.
    Don't mess with Binky Bear!


  8. #7
    EChas3's Avatar
    EChas3 is offline Cadillac Owners Master
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    Re: 2005 STS only starts when it wants??

    Koz, you're right!

    You're right DanO - Have at Koz!

  9. #8
    Dan05STS is offline Cadillac Owners Member
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    Re: 2005 STS only starts when it wants??

    Yes I did consider it being the battery so after finally finding a parts store with one in stock i replaced it and $170 later it did not fix the problem and all the connections are good to the battery no corossion or rust I even cleaned and greased them and that did not help. It doesn't have any check engine lights. But maybe I'll plug it in to make sure.

  10. #9
    EChas3's Avatar
    EChas3 is offline Cadillac Owners Master
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    Re: 2005 STS only starts when it wants??

    The trouble does fit the classic description of a bad crank position sensor. I haven't read of it being a common issue but I'd definately get the codes checked.

  11. #10
    Dan05STS is offline Cadillac Owners Member
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    Re: 2005 STS only starts when it wants??

    Well i guess no one else has had the same problem as me. I thought it might have been a issue another person had experienced and knew what to replace to fix it. It's prolly some kind of sensor or relay somewhere. But anyway, thanks for the advice.

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