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Thread: 2002 Seville SO high idle

  1. #1
    daddyruiz820 is offline Cadillac Owners Member
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    2002 Seville SO high idle

    Yet ANOTHER problem with my cadi. Out of nowhere it started idling high. When in D idles between 1&2. In neutral it shoots up to above 2. In Park damn near 3. Have pulled DTC codes

    IPM B1340
    PCM P0507


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    MoistCabbage's Avatar
    MoistCabbage is offline Cadillac Owners 10000+ Posts
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    Definitions?

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    daddyruiz820 is offline Cadillac Owners Member
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    IPM B1340 air mix door one movement vault

    PCM P0507 idle speed high

  5. #4
    MoistCabbage's Avatar
    MoistCabbage is offline Cadillac Owners 10000+ Posts
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    When was the TB last cleaned?

  6. #5
    daddyruiz820 is offline Cadillac Owners Member
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    It's been a year

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    MoistCabbage's Avatar
    MoistCabbage is offline Cadillac Owners 10000+ Posts
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    I would start with that. While you're at it, make sure the throttle/cruise cables aren't sticking.

  8. #7
    daddyruiz820 is offline Cadillac Owners Member
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    I was hoping not to have to take it all apart again. Since last time I removed it completely and used Carb cleaner in rags and brushes. Should I do that again?

    ----------

    Also, how would I check to see if the cables aren't sticking.

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    MoistCabbage's Avatar
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    No need. Just remove the intake ducting. Carb cleaner, a rag, and an old toothbrush. Make sure you clean the perimeter of the throttle plate too.

    ----------

    First make sure that neither is snug and holding the throttle open. To check them thoroughly, I disconnect them and move them by hand. You could also hold the throttle open and move them by hand.

  10. #9
    daddyruiz820 is offline Cadillac Owners Member
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    How often should that be done? And what can be done to prevent build up?

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    MoistCabbage's Avatar
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    Once a year. And that is what you do to prevent buildup. And if it is fine yearly, it shouldn't take much more than a quick spray and a wipe to clean it. Make sure you get all the ducting back on correctly. A leak after the MAF sensor will set mixture codes.

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    daddyruiz820 is offline Cadillac Owners Member
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    Thank u very much. Will do and post back.

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    Re: 2002 Cadillac Seville SO high idle

    If the TB was cleaned a year ago, that should not be the problem. Hard to imagine it could get THAT dirty THAT fast. If another cleaning doesn't help, you might pull the IAC valve and clean it and the air passage

  14. #13
    daddyruiz820 is offline Cadillac Owners Member
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    Where is that?

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    MoistCabbage's Avatar
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    Re: 2002 Seville SO high idle

    Albums - the Community tab, Albums, the red Seville, 2 albums. 116 pictures of parts and stuff.

    from Cadillac Forums ...........

    http://lmgtfy.com/?q=cadillac+forums...c+cleaning&l=1

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