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Thread: Service Code E30

  1. #1
    Join Date
    Jun 2003
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    60
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    Service Code E30

    Hello,

    This is my first time posting to this forum. I have a 1987 Touring Sedan, and I think it is of the Deville model but not sure. No mechanic can seem to find "Touring Sedan" in their books.

    I have a 4100 engine and I have just received a service code E30 which, according to my factory service manual is Idle Speed Control circuit error. I am assuming a problem with my idle speed control unit next to the throttle body, but everything looked OK. Any help with this matter is greatly appreciated.

    Thanks
    Jim


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  3. #2
    vanaisa's Avatar
    vanaisa is offline Cadillac Owners Enthusiast
    Automobile(s): `65 DeVille Convertible´67 Eldorado,´02 DHS
    Join Date
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    Tallinn, Estonia
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    Bad wiring to ECM?

  4. #3
    Join Date
    Jan 2003
    Location
    Newtown, PA
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    58
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    6,472
    Your car is NOT a "Touring Sedan". That's just an aftermarket kit put on by someone. If you check your VIN, you'll see by the 4th and 5th digits what the car is.
    CB = Fleetwood D'Elegance
    CD = Deville
    CS = Fleetwood Sixty Special
    DW = Brougham
    KS = Seville

    I only included the most likey possibilities.

    Your code 30 could be several things, chances are the idle stop screw has been "jacked" up to set the idle rather than have the ISC control the idle, or something similar.


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