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Thread: slight miss-no codes

  1. #1
    djais1801's Avatar
    djais1801 is offline Cadillac Owners Fanatic
    Automobile(s): 2004 EXT Sable Black
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    slight miss-no codes

    ever since i picked up the truck...it has a slight, rough idle (slight miss)..i attributed this to needing plugs/wires as it hit 100,000 mi. replaced those and still feel the idle-could this be from leaking manifold gaskets (broken exhaust bolts)? if not, any other advice?


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  3. #2
    6lbsofSound is offline Cadillac Owners Fanatic
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    Re: slight miss-no codes

    Have you tried cleaning the throttle body?

  4. #3
    the cadillac man's Avatar
    the cadillac man is offline Cadillac Owners 10000+ Posts
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    Quote Originally Posted by 6lbsofSound
    Have you tried cleaning the throttle body?
    My 03 does this and I cleaned the throttle body and put new plugs and the fuel pump is fairly new and it still has the funny idle(which bugs me to no end)

  5. #4
    bigirb2002 is offline Cadillac Owners Fanatic
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    Re: slight miss-no codes

    just picked up my 05 4 weeks ago. mine dies this to. i have done all of the above. only thing i can think of is tps or o2 replacement

  6. #5
    djais1801's Avatar
    djais1801 is offline Cadillac Owners Fanatic
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    If it was the TPS or O2... I would think a fault code would be produced... My throttlebody was okay

  7. #6
    bigirb2002 is offline Cadillac Owners Fanatic
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    Re: slight miss-no codes

    read online they wont always set off a code. also read 2 cases where replacing the coil packs fixed the problem also

  8. #7
    the cadillac man's Avatar
    the cadillac man is offline Cadillac Owners 10000+ Posts
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    Quote Originally Posted by bigirb2002
    read online they wont always set off a code. also read 2 cases where replacing the coil packs fixed the problem also
    Me too and that can get pricey but may be worth the cost (for now I am putting up with it as I can't replace the coil packs)


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