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Thread: Problem with z20net Signum loosing power

  1. #1
    Regular Member n_hudson's Avatar
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    Default Problem with z20net Signum loosing power

    Guys, git a weird problem, hadnt driven the car for around 4 days, so started her up and the idle seems to be struggling, up and down, around 100 revs either way.

    Then after being on the road for about 100 miles, the turbo stopped working, pulled over at the services, turned the engine off, everything's back to normal.

    Until a little later, turbo's working fine but I've got the EM light on. So I just thought as the car was working fine I'd leave it until I got home.

    So I went to go out in the car just now, no EM light, but the car struggles to rev when I'm accelerating... It feels like its struggling to get going, at about 2500 revs, it sort of drops a few hundred, then picks up again slowly. Now the EM lights back on, no turbo!

    Really confused by it all...

    I'm thinking its likely the boost sensor / Sensor, a split pipe or a similar problem to what Duncan had with his turbo.

    Any one else have any ideas?

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    Full Member Big Sig's Avatar
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    Sticking variable vanes in the turbo?
    Now I need a turbo to keep up!

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    mate reset battery if you have code,if not use brake and accelerator to read code

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    Regular Member n_hudson's Avatar
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    Tried the Brake Accelerator thing, no joy, started the car, fault lights off...

  5. #5
    Regular Member Super T's Avatar
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    Disconnect the battery for 5 mins to reset faults then try again.

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    i have z20net ,the reason for loss of power is safe mode ,if i leave it stand i get light on little engine light not spanner with car,i reset battery it goes out,the only problems i have had with mine is boost solinoid which is £10 from vauxhall and after market dump valve which brought spanner light on, i replaced them and no problems,car is over 90000 miles i have a buzzing noise that i live with now but engine is strong,check oil level cause in my car it went into limp mode with spanner light topped oil up and it stayed off vauxhall told me about oil level on my car and limp mode thought it was bull but it worked

  7. #7
    Regular Member n_hudson's Avatar
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    I've heard about the boost solenoid, might try that. How easy was it to change? I only sometimes get the engine light and spanner light, the other times, the turbo just stops working with no lights.

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    takes 5 mins mate,theres two exact same part number if you look near the turbo you will see a little black box with 3 vacuum pipes and a plug so simple to change the one on mine that i changed and it worked was under the black engine casing near the intake it just clips on so easy mate change the one under the black ecotec case i'd buy the 1 as i think its rare for 2 to break

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    mate mine was a ***** it would work then no turbo then reset would work then it just did my head in worth a try for a tenner

  10. #10
    Regular Member n_hudson's Avatar
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    Cheers Mate, I dont suppose you have a part number? I'll try and grab one tomorrow.

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