2003 STS - Rough idle and hesitation on takeoff - Page 5
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Cadillac Seville / Cadillac Eldorado Forum Discussion, 2003 STS - Rough idle and hesitation on takeoff in Past Cadillac Vehicle Discussion; Two coil cassettes going bad at the same time is a stretch. They're both identical except for color and can ...
  1. #61
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
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    Feb 2006
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    MD Eastern Shore - Kent Island
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    Re: 2003 STS - Rough idle and hesitation on takeoff

    Two coil cassettes going bad at the same time is a stretch. They're both identical except for color and can usually be found for not a lot of bucks at junkyards - any year from 2000 - end of 2003.

    Clean the connector boots - use Q-tips and alcohol to swab out the insides of the coil and plug connector area, and use a dab of dielectric ignition grease (toothpick) around the inside of each boot end.

  2. #62
    Adamhon is offline Cadillac Owners Member
    Automobile(s): 2003 Cadillac STS
    Join Date
    Feb 2012
    Location
    Indiana
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    32
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    Re: 2003 STS - Rough idle and hesitation on takeoff

    I replaced the rear (right) cassette, it is running good now. Thanks for all the help!

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