ECU has died



  • Hi,

    I am looking for some help and insight. Apparently my ecu has just died and needs to be replaced. My car mechanic said that for 99% it is ecu (my car doesnt start at all).

    I am gonna call local mazda dealer to see what he can do but is there any other way? my mech said that only mazda dealer can replace the ecu and it would be around 1k :evil:

    anyone got similar experience or problems?

    I live in dublin, it is 1996 mx3 1.8 v6, english model



  • ahh v6 :( think ive got a 1.6 one kicking around if it didnt get scrapped.

    check ebay mate, normaly alot of mx3s being broken



  • i'm in dublin and we can use my ecu to make sure it is yours before ya go buyin one! you were out with stephan before werent you?
    give me a text 0857408368



  • @2cd6e469b8=Roman:

    my mech said that only mazda dealer can replace the ecu and it would be around 1k :evil:

    :lol: :lol: :lol: 1 k for ECU!!! I paid £30 for one off ebay. For £100 I'd come down and install it for you! It takes about 10 mins tops. Theres about 5 bolts/screws. I can make you a guide if you need. But Im sure Rob will fix it for you ;)



  • 1k :| can get a full HKS,Greddy ecu for mazota for 1000 pennies :|

    Rob will sort you out, hes a good lad :)



  • Thanks for the replies lads. Hope she will rise from the dead:)

    I will contact Rob but I have just been on the phone with local mazda dealer

    he said that ecu programming or reprogramming it is no big deal in terms of money but for 99% he said that I cannot use the used ecu from different mx3 in my car. I will need to get a new ecu.

    Did any of you replace their ecu with an ecu from another mx3 and programme it? I can get an used ecu from a scrappy for 50 euro or so but dont know if it would work. There is one on polish auction site for cheap and it is from 1997 model. Should I get it?

    ps my 1996 model has an immobiliser too



  • Why does he think it's the ECU, that's the last of the line of other things that are more likely.

    What's up with the car?



  • He used the computer diagnostics tool and said he could not connect to my engine but for example he connected to my abs without a problem. hence he said it was ecu

    my car doesnt start, when i put my key to the ignition, the radio is on, all lights too, however when I want to start the engine, radio and all the lights are gone apart from the oil pressure light and battery light (two red lights on the right hand side), there is no sound at all, just one tick…that's it

    anyway another car mech is coming to have a look tomorrow, hopefully Rob will pop in too



  • @4f632d5866=Roman:

    he said that ecu programming or reprogramming it is no big deal in terms of money but for 99% he said that I cannot use the used ecu from different mx3 in my car. I will need to get a new ecu.

    Did any of you replace their ecu with an ecu from another mx3 and programme it? I can get an used ecu from a scrappy for 50 euro or so but dont know if it would work. There is one on polish auction site for cheap and it is from 1997 model. Should I get it?

    ps my 1996 model has an immobiliser too

    I've had 3 different ECUs in my black car, all of them worked. The important thing is to have the right OBD ECU. Count how many plugs there are on the back of the ECU:

    3 plugs (usually yellow) = OBDI so most 95 or younger will work
    4 plugs (usually grey) = OBDII 96 or later

    I know you say yours is 96 BUT it might have been sitting in the warehouse for a few years before being registered, therefore could be an earlier model.

    PS your mechanic is being a jackass or just doesn't have a clue.



  • that's a great news about ecu, there are a few at the scrapyards

    you may be right Marco in truth 1st time I saw the lad cause my 1st choice mechanic couldnt come, he'll come tomorrow and will post you update

    I won't mention the ecu to him just to see what his diagnosis is going to be



  • i'm obd 2 in a 92!!! i'll let ye figure that out!



  • @035e9c030a=robx1r:

    i'm obd 2 in a 92!!! i'll let ye figure that out!

    There's always one! Someone must have stolen yours Rob and swapped the VIN plates :P Japan didn't actually have OBD at all apparently, so really yours shouldn't be if its an import?!



  • nope its uk but has had a new 97 engine put in! before i bought it,



  • @733fa5a176=Marco:

    I've had 3 different ECUs in my black car, all of them worked. The important thing is to have the right OBD ECU. Count how many plugs there are on the back of the ECU:

    3 plugs (usually yellow) = OBDI so most 95 or younger will work
    4 plugs (usually grey) = OBDII 96 or later

    I know you say yours is 96 BUT it might have been sitting in the warehouse for a few years before being registered, therefore could be an earlier model.

    PS your mechanic is being a jackass or just doesn't have a clue.

    but how do I locate ecu? I looked under the bonnet and could not find any of those plugs





  • great,

    it is written on it: k 8628 egi

    and I can see one yellow plug, don't have tools to remove screws and see more

    if it is yellow, it means obd I, not II ?!



  • It's best to count the number of plugs, because I have an OBDI with grey sockets on the ECU! Always a bit of chance with these ECUs, but if it has 3 plugs get the OBDI ecu.



  • my 1st choice car mechanic came down to have a look, he said it must have been a starter motor, when i mentioned ecu he said it was not possible
    surprisingly he didn't use any electronic equipment to check the fault, he just had a wee look

    he is going to remove the starter motor tomorrow and regenerate it

    hope it will do



  • @90aff74560=Roman:

    he is going to remove the starter motor tomorrow and regenerate it

    LMAO whats he gonna do stick it in a test tube over night sorry had to say that :P . . .

    I am glad you have got to the bottom of it, weird for the other mech to say ECU!



  • Rob came down and we jump started it so it must be a starter
    really weird with ecu diagnosis

    Mechanic: he is an alchemist, knows his stuff hence he will regenerate my starter motor or alternatively he can just soak it in a bowl of vodka:)
    the one and only starter motor with blood alcohol count :D


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