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Ignition Coil Replacement

This topic contains 3 replies, has 2 voices, and was last updated by Nightflyr * Richard Kirshy 4 months ago.

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    Topic
  • #989729
    Wes
    Wes
    Participant

    One of the ignition coils on my 04 Focus is going out and causing misfires. I plan to replace it but should I replace all 4 or just the one going bad? Also does brand matter? I usually shop at RockAuto and they offer the motorcraft coils but theyre too expensive

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  • #989736
    Nightflyr *
    Richard Kirshy
    Participant

    My suggestion:
    First buy 2, if one failed, Murphy’s law shows at least one other will also fail.
    As to brand…
    You got 17 years from the factory equipment.
    Need I say more?

    #989773
    Wes
    Wes
    Participant

    Normally Id agree with you, but I bought this car maybe 3 months ago and the dealer had no service history. It has had replacement coils at some point because two them have different style codes, one of them is the one that failed. I dont know how to decipher them so I couldnt say what brand any of them are.

    #989775
    Nightflyr *
    Richard Kirshy
    Participant

    Genuine Ford 4M5Z-12029-B Ignition Coil Assembly $42.95

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