Cylinder 1 Misfire, please help

Discussion in 'General Discussion' started by jan_mast, Oct 22, 2013.

  1. jan_mast

    jan_mast Member

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    Mechanics,

    I have a 2008 Chevy Cobalt that i have been having an issue with.

    I have been having a misfire in #1 cylinder for awhile now. I bought a code reader after the check engine light came on. The error code is P0301.

    I first replaced all of the spark plugs. Still had the misfire. So i ordered and replaced the coil pack for the #1 cylinder. (I am assuming that the #1 cylinder is on the left if i am standing in front of and facing the vehicle).

    So i am a little unsure of how to proceed to fix this misfire issue. Any help would be GREATLY appreciated. Thanks!
     
  2. YelloEye

    YelloEye Super Moderator Staff Member

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    You are correct, cylinder 1 is the one closest to the passenger fender.

    What motor do you have? When are you seeing the misfires happening? What's your spark plug gap set at?
     
  3. Bass_Waves

    Bass_Waves Full Access Member

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    Coil pack is easy to replace. Mainly like Yelloeye asked. Plug gap.
    Also I would check the wiring to the coil pack.
    If a new coil pack does not fix it. Wiring is good. Report back.
     
  4. YelloEye

    YelloEye Super Moderator Staff Member

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    Play musical coil packs, then you don't unnecessarily buy one.
     
  5. Bass_Waves

    Bass_Waves Full Access Member

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    Quite funny but I have 4 extra lsj coil packs in case of emergency lol
     
  6. YelloEye

    YelloEye Super Moderator Staff Member

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    Meh, pack goes I'll run around all Subaru till I get a new one :lol:
     
  7. jan_mast

    jan_mast Member

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    I have already replaced the coil pack for the #1 cylinder, no joy.

    I bought the plugs that were already gapped. Plus I replaced all four and only #1 cylinder is misfiring. I'll have to look up what the engine size is.

    I tried looking up the wiring but was unable to find part number for it. Any ideas? Thanks again!
     
  8. Bass_Waves

    Bass_Waves Full Access Member

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    No no as in check for any cut wiring. The connector to the coil pack and such.
    Do you know what type of cobalt you own.?
    Cobalt LT
    Cobalt LS
    Cobalt Sport
    Cobalt SS
    Since its an 08 it can be any of those.
     
  9. jan_mast

    jan_mast Member

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    I have an LS (2.2L)

    I will follow out the cable, and check the connector, for the #1 cylinder.
     
  10. Bass_Waves

    Bass_Waves Full Access Member

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    I think somebody has extra engine parts here. Silver Balt?
     

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