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Thread: Startup Noise - DII SE7

  1. #1
    Join Date
    Oct 2008
    Posts
    1

    Default Startup Noise - DII SE7

    I have a strange 'whining' noise upon cold startup. Started a week or so ago and hasn't gone away. Lasts about 1 1/2 - 2 minutes and then goes away. Sound is prominent in passenger compartment - can barely hear it if outside the LR. Can't distringuish its origin with hood up.

    I've checked all fluid levels
    It is not based on engine speed - doesn't change pitch with engine revs
    Not dependent on engine idle down upon warm-up - that's acting normal
    Not dependent on transmission position - park, drive, rev, neutral
    Not associated with A/C or fan

    When it goes away - it is as if it is winding down - takes only about 3 secs or so to go away.

  2. #2
    Join Date
    Nov 2006
    Location
    Fairbanks Alaska
    Posts
    24

    Default power steering pump

    It is likely the power steering pump, especially if your weather has just turned cold. My Disco II ( and my chevy too) do it when the wx starts getting cold. Generally it doesn't happen until the wx is in the sub-20's
    Last edited by akrockhound; 10-13-2008 at 12:02 AM. Reason: spelling error

  3. #3
    Join Date
    Feb 2008
    Location
    Keizer, Oregon
    Posts
    12

    Default

    Does it sound like a howling monkey? If so, it is probably the Secondary Air Injector pump on its way out. You can take it off the vehicle and spray some WD-40 into it to extend its life a little. The SAI pump typically only runs for the first 90 seconds or so when the engine is cold and then goes away. From your description of the problem, that would be my guess.

  4. #4

    Default

    Air compressor. It's in the box under the...er....passenger seat over here so it must be the drivers seat over there.

    Does your back end drop overnight? If so fix it before is burns out the compressor.

  5. #5
    Join Date
    Oct 2007
    Location
    Down south.....for now.
    Posts
    62

    Default

    Quote Originally Posted by KeizerRover
    Does it sound like a howling monkey? If so, it is probably the Secondary Air Injector pump on its way out. You can take it off the vehicle and spray some WD-40 into it to extend its life a little. The SAI pump typically only runs for the first 90 seconds or so when the engine is cold and then goes away. From your description of the problem, that would be my guess.
    That sounds about right. Should only happen once a day or else the pump will burn out.

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