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Thread: '00 323Ci error codes intermittent - ignition coil

  1. #1
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    '00 323Ci error codes intermittent - ignition coil

    I have not noticed a loss of performance in the car at all, but have had the SERVICE ENGINE SOON light on here and there. Got it read at AutoZone yesterday finding the below.

    P0305 Cylinder 5 Misfire Detected
    P1250
    P0300 Random Misfire Detected
    P0304 Cylinder 4 Misfire Detected
    P0302 Cylinder 2 Misfire Detected
    P0306 Cylinder 6 Misfire Detected
    P0303 Cylinder 3 Misfire Detected
    P1250
    P0300 Random Misfire Detected

    I previously have changed the ignition coil on cylinder 4. I did save the old one in case it was still good.

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    Jeremy
    2000 323Ci Titansilber Metallic cabriolet

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    Take a look at the link below to an earlier thread where this is discussed.

    http://forum.e46fanatics.com/showthread.php?t=919014
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  3. #3
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    Since misfires are basically across all cylinders,
    dismiss the individual coils,
    focus on proper fuel delivery.

    Has fuel filter ever been replaced?
    Is fuel pressure at 51psi?

    I suspect fuel starvation causing your misfires.
    A scan with a BMW specific diagnostic tool might be more helpful than a generic scantool from AutoZone,
    and possibly shed some light on that mystery P1250 Code.

  4. #4
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    Quote Originally Posted by MIKYZZ4 View Post
    Since misfires are basically across all cylinders,
    dismiss the individual coils,
    focus on proper fuel delivery.

    Has fuel filter ever been replaced?
    Is fuel pressure at 51psi?

    I suspect fuel starvation causing your misfires.
    A scan with a BMW specific diagnostic tool might be more helpful than a generic scantool from AutoZone,
    and possibly shed some light on that mystery P1250 Code.
    Recommendation of BMW scan tool? Checking on the MAF. May try cleaning first for budgetary reasons. The check engine light is extremely intermittent. No fuel filter change since I have had it. Occasionally, EML indicator is on at ignition. Not sure my fuel pressure.

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    Jeremy
    2000 323Ci Titansilber Metallic cabriolet

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    Quote Originally Posted by Pelican Parts View Post
    Take a look at the link below to an earlier thread where this is discussed.

    http://forum.e46fanatics.com/showthread.php?t=919014
    Joined, by the way..

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    Jeremy
    2000 323Ci Titansilber Metallic cabriolet

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    Quote Originally Posted by JCC511 View Post
    Joined, by the way..

    Sent from my SM-G930V using Tapatalk

    If you're looking for an excellent, BMW specific scan too. Check our the Schwaben scan tool, link below.

    https://www.pelicanparts.com/catalog...STGEN1_pg2.htm
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  7. #7
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    Quote Originally Posted by Pelican Parts View Post
    If you're looking for an excellent, BMW specific scan too. Check our the Schwaben scan tool, link below.

    https://www.pelicanparts.com/catalog...STGEN1_pg2.htm
    No bias, eh? Checking it out.

    How is BlueDriver? I am guessing it is generic and maybe not specialized.

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    Jeremy
    2000 323Ci Titansilber Metallic cabriolet

  8. #8
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    Well then, here are some options,
    concerning diagnostic tools,

    For a good BMW scan tool, I feel you have 3 options:

    • Foxwell nt520:http://www.foxwelltool.com/search/?q=NT520
    • Carly for BMW:http://www.mycarly.com/product/bmw-app/
    • INPA software for BMW: Do a search on bimmerforums

      I recommended them in no specific order,
      as selection is based more on preference.

      INPA is an excellent diagnostic tool,
      but is a proprietary BMW factory tool.
      So all available copies are technically bootleg versions.
      This requires a copy of the INPA software downloaded into a laptop computer,
      along with the correct cables for your particular model of BMW.
      I recommend this only for computer geeks, or the mostly computer savvy among us.

      For an affordable standalone unit, Foxwell nt510(nt520 Updated version) is the preferred unit, along with required cables.
      It can scan for BMW codes, among other things, as it can communicate with all BMW modules.

      Carly for BMW is an APP,
      and as such, requires a smartphone,
      along with a connection to the OBD2 port in your vehicle,
      supplied either by cable or wireless connection via Bluetooth dongle


    Update: Now the full version is $74/year on a recurring subscription
    Last edited by MIKYZZ4; 07-12-2018 at 05:19 PM. Reason: UPDATE

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    I appreciate the information. Affordable is ideal.

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    Jeremy
    2000 323Ci Titansilber Metallic cabriolet

  10. #10
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    Carly app is $59.90 per year? I guess that is for the lite version. Not sure the difference, but will have to look. Looks like the adaptor is about $60.

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    Jeremy
    2000 323Ci Titansilber Metallic cabriolet

  11. #11
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    Same codes have returned. Getting my air conditioning serviced at a specialized shop near me on Thursday and will ask them to check the fuel pressure. I am sure changing the fuel filter is something I should do if possible to save money.
    Jeremy
    2000 323Ci Titansilber Metallic cabriolet

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  13. #13
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    Quote Originally Posted by MIKYZZ4 View Post
    The DIY I saw looked tough.

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    Jeremy
    2000 323Ci Titansilber Metallic cabriolet

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    It shouldn't be too difficult, but some persons are more mechanically inclined than others.
    The fuel pressure test may reveal the filter doesn't need replacement.

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    Quote Originally Posted by MIKYZZ4 View Post
    It shouldn't be too difficult, but some persons are more mechanically inclined than others.
    The fuel pressure test may reveal the filter doesn't need replacement.
    I am mechanically inclined. Some projects are more intimidating than others.

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    Jeremy
    2000 323Ci Titansilber Metallic cabriolet

  16. #16
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    Cleaning a self cleaning MAF never fixes anything.

    Vacuum leak, dead or dying maf, or fuel issues.

    I'd like to say vacuum leak because it's so common, but you'd normally get mixture deviation codes. Lack of mixture deviation codes right now doesn't exclude a vacuum leak.
    Any tears in the intake tract boots?
    -Abel

    - E36 328is ~210-220whp: Lots of Mods.
    - 2000 Z3: Many Mods.
    - 2003 VW Jetta TDI Manual 47-50mpg
    - 1999 S52 Estoril M Coupe
    - 2014 328d Wagon, self-tuned, 270hp/430ft-lbs
    - 2019 M2 Competition, self-tuned, 504whp
    - 2016 Mini Cooper S

  17. #17
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    Actually the P1250 code points way more to a fuel problem.

    Not used to P codes. They're very poor.
    -Abel

    - E36 328is ~210-220whp: Lots of Mods.
    - 2000 Z3: Many Mods.
    - 2003 VW Jetta TDI Manual 47-50mpg
    - 1999 S52 Estoril M Coupe
    - 2014 328d Wagon, self-tuned, 270hp/430ft-lbs
    - 2019 M2 Competition, self-tuned, 504whp
    - 2016 Mini Cooper S

  18. #18
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    I am not aware of any leaky boots. The shop I use locally did mention could be vacuum leaks. They have a diag they can do that I may have them do to at least better pinpoint the problem before too much more time passes. Do not want a clogged cat.
    Jeremy
    2000 323Ci Titansilber Metallic cabriolet

  19. #19
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    Intake leaks are the most common, due to deterioration of rubber intake boots,hoses, leading to cracks.
    Easy way to check for cracked boots:Remove airbox to access and remove rubber intake boots,
    squeeze boots to reveal cracks(#3+#5)here:https://www.realoem.com/bmw/enUS/sho...diagId=13_0643

  20. #20
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    Btw, if you don't care for DIY,
    have your shop perform an intake smoke test,
    with a professional smoke machine,
    only way to locate and verify all intake leaks.

  21. #21
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    Hi i chance all my ignition coil on my 323ci. And now i soon i turn it on it turn off. Those anyone know what i can do?

  22. #22
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    The same.
    Read from post #8 - #20

  23. #23
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    I change fuel pump fuel filter and the ignition coil idl what else to chance.

  24. #24
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    Read post#3, followed by post#8
    Quit changing parts blindly,
    perform a diagnostic scan,
    the clues provided by the error codes displayed,
    will help to lead you in the direction of the correct diagnosis.

    READ,READ,READ!!!
    You don't seem to be performing ANY tests,
    just guessing and changing parts!

  25. #25
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    I took it to put the computor and they reset everything and no code came for the ignition no more. But now if it cold it run perfect and out of no where something came on to the check engine light and the car start acting up again. This time i really dont know what going on. If is a sensor for air or what.

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