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Thread: Holding Back

  
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    Unhappy Holding Back

    Hi, my zafira gsi seems to hold back between, if you put your foot down it will go like hell untill 3k it will back off untill 5k then it will go like hell again all the way round to the limiter, it happens in all gears.

    The car is standard, apart from a VXR turbo (brand new). The car has also just had a new boost control valve and been fully serviced (vauxhall main dealer).

    I know it isnt just me, as my mrs said she thinks its holding back and she could drive miss daisy

    Any ideas
    Silver Zafira GSI - VXR turbo with more mods to come

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    MarkyG's Avatar
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    boost leak?
    dodge afm?
    sticking throttle body?

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    I take it none of these show up on tech 2 then? I have checked for boost leak as i removed all the pipes when i changed the turb.

    Whats the best way to test the AFM?

    What about the TB?
    Silver Zafira GSI - VXR turbo with more mods to come

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    Doesn't the pre-load on the actuator need reducing when fitting the VXR turbo to the Z20LET engine to avoid this problem?
    Sounds like you need to have a play with your nuts of the actuator variety.

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    did you change both boost solinoids m8?

    as zafgsi had the same prob last week and i think it was the rear one that needed replaced.
    The coupe...ITS ALIVE & back from the dead....again!
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    Quote Originally Posted by montyfox View Post
    Doesn't the pre-load on the actuator need reducing when fitting the VXR turbo to the Z20LET engine to avoid this problem?
    Sounds like you need to have a play with your nuts of the actuator variety.
    courtenays set it all up for me before i fitted it it, i may pop in and see them again monday and see what they say.
    Silver Zafira GSI - VXR turbo with more mods to come

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    Quote Originally Posted by Glasgow_Stu View Post
    did you change both boost solinoids m8?

    as zafgsi had the same prob last week and i think it was the rear one that needed replaced.
    no the garage just changed the front one, will get them to order me the other one then seeing tho i still have a little warrentee remaining
    Silver Zafira GSI - VXR turbo with more mods to come

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    im almost possitive it will be the back on m8 as its the one most people forget about! its normally that one that need changing tho!
    The coupe...ITS ALIVE & back from the dead....again!
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  9. #9
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    i had exactly the same problem yesterday. 4 minutes later after taking the bumper off the hose from intercooler - turbo hose had come apart. Put it back, back to perfection
    Regal Phase 3.5,VXR Turbo,VXR AFM,VXR Injectors,Courtenay FMIC,Dbilias Flowmaster,Regal Precat,Miltek exhaust,Lightened Flywheel,Uprated Clutch,Denso Plugs,Veccy Pipe,Eibachs,308mm Discs

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