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Thread: Rough idol 1991 Deville sedan with 67,000 miles

  1. #1
    slzr100 is offline Cadillac Owners Member
    Automobile(s): 1991 Deville sedan
    Join Date
    Aug 2012

    Rough idol 1991 Deville sedan with 67,000 miles

    While sitting in park or at a light car has rough idol drives great but just rough idol. Any ideas

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  3. #2
    dennis93coupe's Avatar
    dennis93coupe is offline Cadillac Owners Connoisseur
    Automobile(s): 1993 Coupe Deville, 2009 XLR-V 1 of 6 Crystal Red
    Join Date
    Feb 2010
    Orange County, CA

    Re: Rough idol 1991 Deville sedan with 67,000 miles

    Have you ever changed Spark Plugs? Take your distributor cap off and check the terminals inside the cap and the rotor. Do you have a SES light on? CLick on this link...

    Learn how to pull codes, post back with codes if you have any AND their definitions.

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