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Thread: MG ZS 120 / K-series ECU

  1. #1
    With juicy orangey bits! GT's Avatar
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    MG ZS 120 / K-series ECU

    Does anyone know if the ECU on the 1.8 k-series (120 spec) controls the spark in the engine?

    A garage looking at this car has said that fuel is definately getting into the engine, but no spark and has suggested the ECU needs replacing - does anyone have any thoughts?

    Additionally, does anyone have a spare one kicking around to test the theory with a view to purchase?
    ModOct, the MG3 Website

    www.brit-cars.com

  2. #2
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    Surely the ECU controls the timing of the spark but the divery of the spark is via the coil pack and these are known to fail so I would hazard a guess at you needing a new coil pack(s)?

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    Happy Dad !!! Alex B's Avatar
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    Rob i'm with Martin on this one...btw hello everyone !!!

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    There are no inconsistencies in my posts; occasionally, however, there are alternate pasts. ZS's Avatar
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    Agree, try changing coil packs first.

    Also, mk1 or mk2 ZS? IIRC the ECU and BCU are coded together, so replacing one will mean replacing both plus new key fobs... at least thats deffo true on mk2... not sure on mk1...

  5. #5
    With juicy orangey bits! GT's Avatar
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    It's a Mk1 ZS, I've passed on the info, although testing the theory still becomes difficult in the sence that another unit either needs to be available to test with, or a new one paid for - on a theory.
    ModOct, the MG3 Website

    www.brit-cars.com

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    BTCC all the way! Jerry Zedman's Avatar
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    Quote Originally Posted by Alex B View Post
    Rob i'm with Martin on this one...btw hello everyone !!!
    Hello Alex!!
    Owner of a Pitch Black MG 6 GT!!!!!

    MG6 GT in BTCC for 2012, 2013, 2014.....

    Whoop! Whoop!!



  7. #7
    With juicy orangey bits! GT's Avatar
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    Quote Originally Posted by Alex B View Post
    Rob i'm with Martin on this one...btw hello everyone !!!
    Well hi!
    ModOct, the MG3 Website

    www.brit-cars.com

  8. #8
    With juicy orangey bits! GT's Avatar
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    Well, upon the advice given here, word was passed back to the garage for investigation.

    SInce then, on an unrelated discovery (sic), it transpires that there is a cable that connects from the coil pack, down into the engine bay somewhere, which was rubbing against a pipe of some sorts. Apparently, the rubbing is such that the protective casing had worn through and in the monsoon of June 2012, water ran along the pipe and got into the exposed copper and created a short.

    So, one new cable (and coil pack!) later, we have a fully operational MG ZS 120!

    Thanks to those who were spot on with their suggestions
    ModOct, the MG3 Website

    www.brit-cars.com

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