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Thread: not firing on 1 and 4 cylinders

  
  1. #1
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    stur5gt's Avatar
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    not firing on 1 and 4 cylinders

    i have a problem with my astra mk4 2001 8v z16se engine.
    at first i thought it was a head gasket so ive replaced that due to comtaminated oil.
    now i have read the car ecu it came up with the fault codes

    P0300 Misfire Unidentified Cylinder Detected B-21
    P0201 Cylinder 1 injector circuit high C-23
    P0201 Cylinder 1 injector circuit low C-23
    P0204 Cylinder 4 injector circuit high C-26
    P0204 Cylinder 4 injector circuit low C-26
    P0110 Intake Air Temperature Circuit High Input C-12
    P0110 Intake Air Temperature Circuit Low Input C-12

    ive change injector 1 and 4 with no luck.
    spark plugs are working to these ive checked.

    is my ecu broke?

    the car keeps misfiring and stalls when warm please help me put this to bed.

  2. #2
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    GB's Avatar
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    how did u test the sparks?

    although they may be firing - they may not be doing so in the correct order

    personally id be looking at the coil (no coil pack on the 8v - just a DIS coil and HT leads)

    heres the coil in question for your Z16SE motor

    http://cgi.ebay.co.uk/VAUXHALL-ASTRA...item2c52d6b774


    just what id do personally - not saying its a definite though im afraid

  3. #3
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    WHITE CHOCOLATE's Avatar
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    Could be an ecu fault quick simple test,get the car running and press on the ecu plug up down and pull it in an out to see if anything happens ie cuts out altogether or improves when theres movement on the ecu plug that goes to the injectors(dont unplug it when running,also check when off that no ecu terminals are bent etc)
    could be anything though
    "WHATS THE RETAIL ON ONE OF THOSE?" "MORE THAN YOU CAN AFFORD PAL . . . .888

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