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This is a discussion on question within the General Help forums, part of the LSx Technical Help Section category; my car idles rough i think it might be the cats. it just started today. anyone know what it might ...

  1. #1
    ls1ftw tigersport14's Avatar
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    98 trans am

    question

    my car idles rough i think it might be the cats. it just started today. anyone know what it might possibly be?

  2. #2
    N/A nitrously aspirated stangslayer98's Avatar
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    it could be many things just not enough information

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    Life in the Fast lane sunsetorangess's Avatar
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    Like said above, we need more info to help ya.
    When does it idle rough? Any times more than others?
    Dont any mods lately?
    any mods at all? Any codes? What type of gas are you running, just to name a few.
    J
    2001 SS, Its not the car its the Driver that matters....

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    Moderator Cutlass's Avatar
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    Stick with the KISS (Keep. It. Simple. Stupid.) method here, no offense intended. It the thing runs rough, first thing to think about is ignition parts like plugs and plug wire. Are you due for a tune-up?? Next thing is fuel related problems like gummed up/clogged injectors or bad gas (there seems to be a small rash of that around here lately). Need more info. Does it miss under load? Does it lack power/seem slugish? Any mods we should know about?

  5. #5
    ls1ftw tigersport14's Avatar
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    the only "mod" i have is i dumped it after the Y pipe, so all it does it go though the cats and out the y. my check engine light randomly goes on and off, so i took it to this place and the said the code was coming from the cats. so im guessing i have clogged cats

  6. #6
    N/A nitrously aspirated stangslayer98's Avatar
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    those codes are never that accurate especially if your using the obd2 that autozone and typical autoparts stores have, most likely your getting a code from the o2 sensor not being able to make an accurate read

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    Quote Originally Posted by stangslayer98 View Post
    those codes are never that accurate especially if your using the obd2 that autozone and typical autoparts stores have, most likely your getting a code from the o2 sensor not being able to make an accurate read

    Ditto.

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