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Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis

poli1990 7398 6
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 16262281
    poli1990
    Level 10  
    Hello, I am looking for someone who has an e46 with an n42 / n46 engine or has access to such efficient coils and could measure the parameters. The thing is that in this video https://youtu.be/31hfc1YBSLc it is shown that a working coil has a value of 0.8 Ohm on the extreme pins. I measured 4 coils at home and there is a big difference between this value. Can somebody help me and measure if it really is so? Unfortunately, I am not sure for my coils because I have a problem with the ignition falling out. I am asking for quick info because I need a car and it is impossible to drive.

    I mention that today I bought a new ngk coil - I measured and has about 1.4 Ohm. Is it possible that other manufacturers have different resistance in the coils? I have new candles. I will add that the car starts working properly when the engine heats up. In addition, there is a lack of power on the cold up to 3 thousand, above it goes ok, and when warm it is normal.
    Attachments:
    • Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis IMG_20170207_135640.jpg (3.58 MB) You must be logged in to download this attachment.
    • Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis IMG_20170207_135836.jpg (3.81 MB) You must be logged in to download this attachment.
    • Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis IMG_20170207_135418.jpg (3.35 MB) You must be logged in to download this attachment.
    • Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis IMG_20170207_135237.jpg (3.5 MB) You must be logged in to download this attachment.
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  • #2 16262474
    szymitsu21
    VIP Meritorious for electroda.pl
    In my opinion, the primary circuits are OK. Don't look here probably.
    How parameters from other sensors? Flow, etc.
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  • #3 16263125
    poli1990
    Level 10  
    Here are screenshots from inpy, maybe you can deduce something. I think it's a coil ...
    Attachments:
    • Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis IMG_20170121_105021.jpg (6.92 MB) You must be logged in to download this attachment.
    • Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis IMG_20170121_103702.jpg (5.14 MB) You must be logged in to download this attachment.
    • Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis IMG_20170121_105117.jpg (5.49 MB) You must be logged in to download this attachment.
    • Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis IMG_20170121_105129.jpg (3.3 MB) You must be logged in to download this attachment.
    • Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis IMG_20170121_105200.jpg (4.82 MB) You must be logged in to download this attachment.
    • Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis IMG_20170121_105214.jpg (3.42 MB) You must be logged in to download this attachment.
    • Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis IMG_20170121_105230.jpg (3.77 MB) You must be logged in to download this attachment.
    • Bmw e46 318i n42 / n46 - Ignition loss and cold jerking - diagnosis IMG_20170121_105302.jpg (4.53 MB) You must be logged in to download this attachment.
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  • #4 16263452
    coperfild
    Level 35  
    It's not a coil, read valvetronic to try to unplug the plug.
  • #5 16263596
    poli1990
    Level 10  
    New vvt actuator, recently replaced. The problem appeared recently, the ignition was sporadic, I replaced the candles, the week was ok, then it started to go crazy
  • #6 17007951
    elmer2
    Level 28  
    and how is the problem?
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  • #7 17997736
    luki e 46
    Level 10  
    did you find a solution?

Topic summary

The discussion revolves around ignition issues in a BMW E46 with N42/N46 engines, specifically concerning coil resistance measurements. The original poster seeks assistance in measuring coil parameters, noting discrepancies in resistance values compared to a reference video. They mention purchasing a new NGK coil with a resistance of 1.4 Ohm and express concerns about potential variations in resistance among different manufacturers. The car exhibits ignition loss and power issues when cold, improving as the engine warms up. Responses suggest checking other sensors and components, such as the Valvetronic system and VVT actuator, rather than focusing solely on the coils.
Summary generated by the language model.
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