Help! Fast idle
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Cadillac Seville / Cadillac Eldorado Forum Discussion, Help! Fast idle in Past Cadillac Vehicle Discussion; 1993 Eldorado with a 4.9. Car is sailing down the road with high idle and in park it is idling ...
  1. #1
    FANK43 is offline Cadillac Owners Member
    Automobile(s): 1993 Eldorado
    Join Date
    Jul 2013
    Posts
    8

    Help! Fast idle

    1993 Eldorado with a 4.9. Car is sailing down the road with high idle and in park it is idling around 2200 to 2300...
    Previously the idle was normal then rising to 14 to 1500 sometimes... any suggestions? Idle Speed control? if so is Delco the recommended replacement or is there a better one available.. all part stores around me stock the BSW brand.

    here are the last codes:

    P030 History
    P052 History
    P098 History
    I039 Current
    I052 History

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    66
    Posts
    72,788

    Re: Help! Fast idle

    Codes are meaningless without their definitions.

    Have you checked for a vacuum leak? Stuck or binding throttle or cable?

  4. #3
    FANK43 is offline Cadillac Owners Member
    Automobile(s): 1993 Eldorado
    Join Date
    Jul 2013
    Posts
    8

    Re: Help! Fast idle

    Throttle cable is not binding or stuck... Have not found any vac leaks

  5. #4
    EldoRedo's Avatar
    EldoRedo is offline Cadillac Owners Fanatic
    Automobile(s): 1991 ETC (Crimson)
    Join Date
    Jul 2006
    Location
    Bethesda, Md.
    Posts
    231

    Re: Help! Fast idle

    This sounds like it may be your throttle position sensor.

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