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Thread: suspected ecu problem

  1. #1
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    Default suspected ecu problem

    hi got a problem with my z18xe vectra c, car wont start well it wont even turn over, everything works on the dash apart from fuel guage and eml light doesnt come on, tryed putting it on a diagnostic machine and it wont connect says either error or igntion is off ect, all the relays click when u try to start it but it doesnt even turn over, i brigded the starter and the starter turns the engine over fine but obv doesnt start it, anyone else had anything like this? im sure the ecu has gone or there is no power getting to the ecu but iv traced all wires back and theres no split broken wires ect, any ideas would be great

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    Vehicle : vectra c

    Trim : ls

    Engine : 1800

    Year : 04

    Mileage : 132000

    Default

    are you still getting the padlock symbol ?

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    no mate padlock symbol is sorted now

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    Regular Member vectrahunter's Avatar
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    My 1.9 cdti had the same fault as yours turned out in be corroded wires to the Ecu loom just where the loom passes over the front subframe

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    Vehicle : vectra c

    Trim : ls

    Engine : 1800

    Year : 04

    Mileage : 132000

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    Quote Originally Posted by nath20vt View Post
    hi got a problem with my z18xe vectra c, car wont start well it wont even turn over, everything works on the dash apart from fuel guage and eml light doesnt come on, tryed putting it on a diagnostic machine and it wont connect says either error or igntion is off ect, all the relays click when u try to start it but it doesnt even turn over, i brigded the starter and the starter turns the engine over fine but obv doesnt start it, anyone else had anything like this? im sure the ecu has gone or there is no power getting to the ecu but iv traced all wires back and theres no split broken wires ect, any ideas would be great

    did you say you bought it as a non starter

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    im leaning towards either dodgy wires or the ecu ill check the ones you have mentioned tomorrow, yes was bought as i non runner

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    Regular Member Critch's Avatar
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    Vehicle : Mk1 renault scenic... I know I know but it drives

    Trim : Basic

    Engine : 1.6 16v

    Year : 2003

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    Have you checked power an ground at ecu?

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    i havent no mate im absolutaly useless when it comes to wires and electrics, how would i go about checking them? iv checked the black earth on the ecu if thats what you ment?

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    Engine : Z18XER


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    iv checked the black earth on the ecu if thats what you ment?[/QUOTE]

    I thought the earth was brown

  10. #10
    Regular Member Critch's Avatar
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    Vehicle : Mk1 renault scenic... I know I know but it drives

    Trim : Basic

    Engine : 1.6 16v

    Year : 2003

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    Find good earth or if cable long enough connect to battery.

    Test power cable should see batt voltage.
    Swap round to post on Batt an test earth on ecu should be same.

    Earth to chassis are brown but ecu earths a usually black

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