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Check engine light still on after fixing problem

  • 04-05-2019 05:09PM
    #1
    upupup
    Registered Users, Registered Users 2 Posts: 605 ✭✭✭


    I had a faulty ignition coil that caused spluttering at the start and ended up running on only 3 cylinders.
    I put in a new coil today which fixed my problem but the yellow check engine light is still on.

    I didn't put in a toyota part(Denso),I put in an Elta part.
    Would 3 Denso coils and 1 Elat coil cause confusion with the cars computer?
    Is there any other reason for the light to stay on with the car running smoothly?


Comments

  • #2
    Pkiernan
    Registered Users, Registered Users 2 Posts: 4,236 ✭✭✭Pkiernan


    upupup wrote: »
    I had a faulty ignition coil that caused spluttering at the start and ended up running on only 3 cylinders.
    I put in a new coil today which fixed my problem but the yellow check engine light is still on.

    I didn't put in a toyota part(Denso),I put in an Elta part.
    Would 3 Denso coils and 1 Elat coil cause confusion with the cars computer?
    Is there any other reason for the light to stay on with the car running smoothly?

    The light needs to be turned off, which is done by resetting the error code.


  • #3
    upupup
    Registered Users, Registered Users 2 Posts: 605 ✭✭✭upupup


    Pkiernan wrote: »
    The light needs to be turned off, which is done by resetting the error code.

    Thanks.....I presume i need a mechanic with the right equipment to do that or is there a way for me to reset it.....would disconnecting the battery work?


  • #4
    kermitpwee
    Registered Users, Registered Users 2 Posts: 1,718 ✭✭✭kermitpwee


    upupup wrote: »
    Thanks.....I presume i need a mechanic with the right equipment to do that or is there a way for me to reset it.....would disconnecting the battery work?
    What type of toyota and year?
    Older ones disconnect the battery for 15 minutes


  • #5
    Pkiernan
    Registered Users, Registered Users 2 Posts: 4,236 ✭✭✭Pkiernan


    upupup wrote: »
    Thanks.....I presume i need a mechanic with the right equipment to do that or is there a way for me to reset it.....would disconnecting the battery work?

    A 10 euro Bluetooth OBDII reader from Amazon will do it.


  • #6
    upupup
    Registered Users, Registered Users 2 Posts: 605 ✭✭✭upupup


    kermitpwee wrote: »
    What type of toyota and year?
    Older ones disconnect the battery for 15 minutes

    06 corolla 1.4...I will try that tomorrow as I disconnected it before without any issue


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  • #7
    Stoolbend
    Registered Users, Registered Users 2 Posts: 1,287 ✭✭✭Stoolbend


    Pull the efi fuse in the fuse box under the bonnet for 10 seconds. That’ll clear any faults.


  • #8
    joujoujou
    Registered Users, Registered Users 2 Posts: 15,474 ✭✭✭✭joujoujou
    Unregistered Users


    Coil replacement would clear the fault related to it after a while. For your own peace of mind I'd recommend to get codes read.


  • #9
    upupup
    Registered Users, Registered Users 2 Posts: 605 ✭✭✭upupup


    I disconnected the battery for 15 min and everything is back to normal:)


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