2000 SLS running rough
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Cadillac Seville / Cadillac Eldorado Forum Discussion, 2000 SLS running rough in Past Cadillac Vehicle Discussion; Ok so i just wanna start off by saying whats up everybody, Im new this this CADDY fourm page and ...
  1. #1
    Caddy 4 Life is offline Cadillac Owners Member
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    2000 SLS running rough

    Ok so i just wanna start off by saying whats up everybody, Im new this this CADDY fourm page and i look forward to a lot of help. So I have a 2000 CADILLAC SEVILLE SLS and it's running rough and shaking but sorta smoothes out when accelerated....

    *****NEW SPARK PLUGS
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    XXXXX NOOOOOOOO VACCUME LEAK AT ALL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    XXXXX I SMELL UNBURNED FUEL

    AND STILL RUNS POURLY. Please help me soon

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  3. #2
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
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    Please don't start multiple threads on the same subject.

    Duplicate post:
    http://www.cadillacforums.com/forums...questions.html

    Edit: Never mind, it was closed.

    Have you checked for a sticking fuel injector?
    Leaking FPR?

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    Ranger's Avatar
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    Re: 2000 Caddy seville SLS/STS RUNNING ROUGH

    Quote Originally Posted by Caddy 4 Life View Post
    XXXXX I SMELL UNBURNED FUEL
    Check for a leaky FPR.

  5. #4
    basscatt's Avatar
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    Re: 2000 SLS running rough

    check for Diagnostic Trouble Codes -

    if you don't know how - go here and read the ENTIRE post -

    http://www.cadillacforums.com/forums...odes-dtcs.html

    if you have any codes - post them here -
    ALONG WITH THEIR DEFINITIONS -

  6. #5
    Caddy 4 Life is offline Cadillac Owners Member
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    Re: 2000 Caddy seville SLS/STS RUNNING ROUGH

    FPR? what is that?

  7. #6
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    Submariner409 is offline If it won't run, chrome it
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    Re: 2000 SLS running rough

    Just above this thread - in the stickys - the "Acronyms" thread. There are a ton of them you need to know because you'll see them time and time again in these forums.

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    Caddy 4 Life is offline Cadillac Owners Member
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    THESE R THE CODE THAT COME UP

    P0102
    p0412
    p0418
    p0419
    p0443

    ----------

    What kind of leak?

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    Re: 2000 SLS running rough

    As requested earlier, Please post your codes, definitions, and whether each is Current or History - Noboby has them all memorized - yet.

    FPR leak - Fuel Pressure Regulator - gasoline.

    This is a generic FPR - a ruptured diaphragm will leak raw gas out the vacuum nipple - yours is on the side of the dome.

  10. #9
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    Re: 2000 SLS running rough

    looks like a bad MAF sensor -

  11. #10
    Caddy 4 Life is offline Cadillac Owners Member
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    Re: 2000 SLS running rough

    not it i had changed

  12. #11
    Caddy 4 Life is offline Cadillac Owners Member
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    Re: 2000 SLS running rough

    Ok so all these code turned out to be a bad fuse. Now i have a p0300 which is cylinder/ cylinders misfire. Dont wast my time. New Plugs, New boots, NO VAC LEAKS, fpv is good. i smell gas out the exhaust and smooths out at 2000 + rpm

  13. #12
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    Re: 2000 SLS running rough

    Not that I want to "wast (your) time", but you might want to find the cause of the P 0443 DTC. Then bounce that against your remark about "NO VAC LEAKS".

    Fuel smell in the exhaust at low speeds might be a leaky fuel injector.

    http://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

  14. #13
    basscatt's Avatar
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    Re: 2000 SLS running rough

    Quote Originally Posted by Caddy 4 Life View Post
    Ok so all these code turned out to be a bad fuse. Now i have a p0300 which is cylinder/ cylinders misfire. Dont wast my time. New Plugs, New boots, NO VAC LEAKS, fpv is good. i smell gas out the exhaust and smooths out at 2000 + rpm
    ------------------
    ya - certainly wouldn't want to wast YOUR time - but -
    P0300 is a generic misfire code -
    our on-board code readers will not display WHICH cylinder/cylinders is/are misfiring -
    only that there IS a misfire -

    take the car to any large auto parts store - they will check your codes for free -

    P0301 is a misfire in cylinder #1 - P0302 is cylinder #2 - P0303 is #3 - etc -

    once you discover WHICH cylinder is misfiring - diagnosis becomes much easier -

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    Caddy 4 Life is offline Cadillac Owners Member
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    Re: 2000 SLS running rough

    ok the ONLY CODE comming up is P0300. I have NO!!!!!!!!!!!!!!! vac leak

    ----------

    sarcasim not needed but thanks.

  16. #15
    basscatt's Avatar
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    Re: 2000 SLS running rough

    Quote Originally Posted by Caddy 4 Life View Post
    ok the ONLY CODE comming up is P0300. I have NO!!!!!!!!!!!!!!! vac leak

    ----------

    sarcasim not needed but thanks.
    ------------------------------
    spellcheck is your friend -

    sarcasim not needed but thanks.
    you get what you give -

    oh - there is no "I" in sarcasm - you are welcome -

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