2000 sls high idle
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Northstar Engines and System Technical Discussion Discussion, 2000 sls high idle in Cadillac Engine Technical Discussion; All of a sudden my idle stays at about 1100 to 1200 rpm. Might jump up to 1400 than back ...
  1. #1
    jrsample is offline Cadillac Owners Member
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    2000 sls high idle

    All of a sudden my idle stays at about 1100 to 1200 rpm. Might jump up to 1400
    than back to 1200. Car only has 44,000 miles. Could this be a memory thing, or sensor?

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  3. #2
    mcowden is offline Cadillac Owners Connoisseur
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    Re: 2000 sls high idle

    Quote Originally Posted by jrsample
    All of a sudden my idle stays at about 1100 to 1200 rpm. Might jump up to 1400
    than back to 1200. Car only has 44,000 miles. Could this be a memory thing, or sensor?
    It could be a bad idle air control valve. Could also be a vacuum leak. Check for codes and let us know. My guess is the IAC valve if nothing else changed. You should post this in the Northstar section. I would move it, but I don't have mod privileges here...
    Mike

  4. #3
    Krashed989's Avatar
    Krashed989 is offline Cadillac Owners Connoisseur
    Automobile(s): 94 Eldorado, and a 99 ETC
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    Re: 2000 sls high idle

    I agree with Mcowden, either the IAC valve or insufficient vaccum mainly to the FPR (ie. a vaccum leak).

  5. #4
    jrsample is offline Cadillac Owners Member
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    Thread Starter

    Re: 2000 sls high idle

    Thanks for the quick responce. Beats me what's going on, things are back to normal.
    The next day we drove the car -things were fine. I'll still keep your ideas in mind.
    Thanks again!

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