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Thread: signum turbo problems

  1. #1
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    Default signum turbo problems

    Hi folks, got a stange one for you.
    I have a signum 2.0 turbo z20net. which i bought with a dead engine. So i purchased a new engine with less than 20k on it, and proceeded to fit the new engine in to the car, repacing only the engine and using all of the original cars electrical components and mechanical bolt on parts.
    Once it was all fitted and put back together we then went for first start and the starter just keeps engaging and turning the engine over ?.
    So we removed the solenoid wire from the starter and turned on the ignition and fed the solenoid post power and the engine started first time and runs sweet as a nut.
    So the car runs excellently with the solenoid wire off.
    So we plugged in the modis and it throws up some weird codes ?
    It says low voltage to boost control valve and low voltage to somewhere else, cannot remember where.
    so as it was running ok i took it out for a shake down test and the turbo does not do anything. The actuator and the turbo are brand new. But no boost.
    Please help. I just hope someone else has had weird problems like mine.
    Thanks for reading.
    Any help is most welcome and thank you in advance.
    regards
    Sandy.

  2. #2
    Ex Vec-C Admin Deztroyer's Avatar
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    Default

    the actuator and turbo may be new but are they adjusted ?
    if not then they will throw up codes..

    i would look at your old actuator arm and unscrew it counting the revolotions until its removed ... then remove the new actuator arm and rethread and count the revolutions to ensure there the same/ as close as possible ..

    also as im summising that yours was a preface 2.0T was the new engine out of a similar aged vehicle?
    is the new turbo the same as the old one ?>
    i.e. old was garrett... is the new one a garrett or a mitsubishi ? if so then the engine data on your car would not be correct as the mitsibishi can be a more powerful unit hence why its fitted to the face lifts ... if this is the case then you need a live map to correct the issue BUT widing the actuator arm out and making it longer would help to reduce the car boosting too early BUT could eend up causing further damage
    Last edited by Deztroyer; 28th June 2011 at 07:33.

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    Default

    cheers for the speedy reply deztroyer.
    the turbo and actuator was the ones on the other engine that threw the chain, it was replaced by vauxhall in may. and the car ran sweet as a nut. The new engine that went in to the motor was an identical plant to what came out just alot lower mileage. But i personally hope that the rlectrical problem is just throwing the car in to limp mode.
    Cheers sandy.
    Quote Originally Posted by deztroyer View Post
    the actuator and turbo may be new but are they adjusted ?
    if not then they will throw up codes..

    i would look at your old actuator arm and unscrew it counting the revolotions until its removed ... then remove the new actuator arm and rethread and count the revolutions to ensure there the same/ as close as possible ..

    also as im summising that yours was a preface 2.0T was the new engine out of a similar aged vehicle?
    is the new turbo the same as the old one ?>
    i.e. old was garrett... is the new one a garrett or a mitsubishi ? if so then the engine data on your car would not be correct as the mitsibishi can be a more powerful unit hence why its fitted to the face lifts ... if this is the case then you need a live map to correct the issue BUT widing the actuator arm out and making it longer would help to reduce the car boosting too early BUT could eend up causing further damage

  4. #4
    Admin & Membership Manager bigmac's Avatar
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    Vehicle : insignia

    Trim : irmscher

    Engine : 2.0 cdti

    Year : 2009

    Default

    You already have a thread about this running, thread closed so it's not split across 2 threads

    Irmscher Insignia CDTI 130

    MOD'S...Irmscher front spoiler, Irmscher mats, Irmscher door pins, Irmscher rear spoiler, Irmscher grille, Irmscher skirt & exhausts,Irmscher Roof spoiler MOD'S TO COME..Side skirts,Wheels

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