Changed battery now have rough idle
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Cadillac Seville / Cadillac Eldorado Forum Discussion, Changed battery now have rough idle in Past Cadillac Vehicle Discussion; 1995 Eldorado with the N* I changed the battery last week and now the car idles roughly and sorta shakes, ...
  1. #1
    eric007's Avatar
    eric007 is offline Cadillac Owners Member
    Automobile(s): 1995 Eldorado Convertible
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    Unhappy Changed battery now have rough idle

    1995 Eldorado with the N*

    I changed the battery last week and now the car idles roughly and sorta shakes, accelerates fair and seems to be fine at highway speeds, it almost seems like the catalytic converter is clogging up. May just be a coincidence, and something else might have gone wrong, but it was running fine before I changed the battery. I have left the battery undone for an hour to try to reset the computer, but that has not helped. Not getting any codes thrown out to guide me in the right direction, anyone have any ideas? Is there a site I can go to get what the normal PCM operation thresholds should be for my car? Thanks.

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  3. #2
    91TexasSeville's Avatar
    91TexasSeville is offline Cadillac Owners Connoisseur
    Automobile(s): 2008 SRX-V8, 1991 Eldorado
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    Re: Changed battery now have rough idle

    How long has it been since the battery change, and how many miles since?

  4. #3
    cctgene's Avatar
    cctgene is offline Cadillac Owners Fanatic
    Automobile(s): 1992 Seville
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    Re: Changed battery now have rough idle

    Maybe a TPS/IDLE learn thing.

  5. #4
    eric007's Avatar
    eric007 is offline Cadillac Owners Member
    Automobile(s): 1995 Eldorado Convertible
    Join Date
    May 2005
    Location
    Midlands of SC
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    52
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    19

    Re: Changed battery now have rough idle

    It has been about a week and a half. But I have had to take it loose twice since the change because I needed to clean the positive cable and didn't have a wire brush when I changed it out and then on Saturday to try to reset the computer. I drove about about two hundred miles between one of those times, how long or how many miles should it take for the computer to relearn the idle and such? TIA!!

    Eric

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