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    Mercruiser/Motorola versus Stand Alone ECM's

    He's put me onto someone else...I suspect I'll end up giving up...
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    Mercruiser/Motorola versus Stand Alone ECM's

    Thank you...I shall keep you updated... Nick.
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    Mercruiser/Motorola versus Stand Alone ECM's

    Hi...that's great for two reasons... 1..we aren't going insane and 2, we also confirmed that it wasn't providing an earth so we must all be heading in the same direction. I will try providing pin 22 with an additional earth by using a relay powered when I turn the key and see if that helps. Do...
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    Mercruiser/Motorola versus Stand Alone ECM's

    Here you go... Thanks for your help...
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    Mercruiser/Motorola versus Stand Alone ECM's

    Ok...attached engine numbers.. I was told the ECU was working when I purchased the engine. The engine needed a rebuild so only just got to try ECM. I have tried giving the relays their own earth but not tried supplying pin 22 with an earth at key turn...
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    Mercruiser/Motorola versus Stand Alone ECM's

    Hi. The ECM does not allow the MPR to fire up which inturn does not allow the fuel relay to operate. It does provide voltage to the coil, coil driver and injectors. Was just wondering if anyone had found a stand alone ECU that connected simply. Quite happy to buy replacement but struggling to...
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    Mercruiser/Motorola versus Stand Alone ECM's

    Hi...thanks for replying. It's the ECM control module..On a train currently so wit post details when I get home...
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    Mercruiser/Motorola versus Stand Alone ECM's

    Hi all from the uk...new to the forum but would like some help please as you have all been recomended... I have a Maxum I'm restoring and I have chosen a 5.0 V8 MPi Vortec to fit in it. All fitted fine (Ish!!) but when I test fired it all was bad...ECM doesn't work (Sold as good one but MPR...
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