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ignition coil question

Discussion in '2nd Gen. Tacomas (2005-2015)' started by portAh, May 18, 2019.

  1. May 18, 2019 at 3:41 PM
    #1
    portAh

    portAh [OP] Member

    Joined:
    Jan 28, 2010
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    #30249
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    Male
    I have a general question about the ignition(on plug).

    Is it a likely possibility that when a bad coil causing CEL P035N (Ignition Coil D Primary/Secondary Circuit) and engine choking/misfire(other CEL P030X),
    then after changing to a new spark plug for that cylinder N but keep the same coil, only CEL P035N is shown but no more choking felt or misfire CEL.

    If yes, is it because a bad coil together with an old plug(say having incorrect gap overtime or oxidation) will miss much worse that causes engine choking, while if with a new plug, despite a less than good coil, may only miss once in awhile, resulting in only CEL P035N on, but no choking/misfire felt.

    I read somewhere that if the plug gap became wider or oxidized, it became a bigger load for the coil, pushing against the limit the coil can drive reliably.

    Thanks.
     
  2. May 20, 2019 at 7:03 AM
    #2
    Stemmy

    Stemmy Certified Wombat Rancher

    Joined:
    Apr 3, 2017
    Member:
    #215220
    Messages:
    347
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    Male
    First Name:
    Rob
    Pennsylvania
    Vehicle:
    2013 Pyrite Mica DCLB
    had to replace #3 coil on my '13 a few months ago P0303 Code, priced at the dealer was about $150 & wasn't in stock. So I went to Advance Auto (as much as I hate that place), they had a Denso in stock for $65, same as factory minus it saying TOYOTA on it. Problem solved.
     
    TheDevilYouLove likes this.

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