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Thread: uprated actuator probs

  
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    jamesmurray's Avatar
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    uprated actuator probs

    righto, courtney sent me through their uprated actuator ready for my cs3 remap next month. i fitted it, and the results were amazing. the boost was extrmely strong and would hold 0.6 in the first 2 gears, and 0.7bar in the rest. the boost wouldnt budge from those figures. it was fine for a week of hardish driving, then a few days ago while revving it out in 3rd gear, the engine shuddered and the spanner light came on. i reset the ecu, and the same problem happens on and off now, plus it cant hold boost as well either. ive checked all the pipage, and all seems fine. has any1 got any suggestions?

    jimbo

    ps, the afm is new as well, only dun a few hundred miles.
    ASTRA MK4 GSI TURBO
    WAS CS3 268bhp & 282lb/ft
    NOW CS4 279bhp & 336lb/ft

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    clokey's Avatar
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    Are you running a standard map ??
    Astra Sri Turbo

    CS4 276BHP/325lbft


    LMF Vauxhall - 01858 433599

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    Cameron Ginger Diaz
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    I'm having problems with my boost too with an actuator problem - although getting no lights on the dash....so should I expect to see the engine management light come on?

    When boosting the the acceleration is very bumpy esp around 3000 revs....a trip to Courtenays?


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    Quote Originally Posted by GSILady
    I'm having problems with my boost too with an actuator problem - although getting no lights on the dash....so should I expect to see the engine management light come on?

    When boosting the the acceleration is very bumpy esp around 3000 revs....a trip to Courtenays?
    Have you fitted your VXR unit then Shev???
    Astra Sri Turbo

    CS4 276BHP/325lbft


    LMF Vauxhall - 01858 433599

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    Cameron Ginger Diaz
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    Quote Originally Posted by clokey
    Have you fitted your VXR unit then Shev???
    No hun not yet - just weighing up the pros and cons at the mo


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    Pro's and con's..........................

    Are there any
    Astra Sri Turbo

    CS4 276BHP/325lbft


    LMF Vauxhall - 01858 433599

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    its running a standard map at the moment. im running all the parts for cs3, vxr blower, fmic etc. what i dont understand is that it ran fine for over a week without a single problem, then all of a sudden its throwing up engine lights everyday. il have to drive it steady for the next 2 weeks until its remapped at courtneys.

    jimbo
    ASTRA MK4 GSI TURBO
    WAS CS3 268bhp & 282lb/ft
    NOW CS4 279bhp & 336lb/ft

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    Im not sure if this is correct this is, but because you are now running with the uprated actuator and VXR turbo, this will hence produce a slightly higher boost which sends the ECU out of its parameters. Which results in the EM light coming on.
    Someone may correct me or failing that phone Courtenays and ask for their advise
    Astra Sri Turbo

    CS4 276BHP/325lbft


    LMF Vauxhall - 01858 433599

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    I confirm with Clokey, the ECU cannot operate within it's defined parameters.

    As it cannot open the wastegate at the required level it senses a problem and throws the car into limp mode.

    You will need to adjust the actuator to it's weakest setting or if that does not work, re-fit the std actuator until you get a remap.

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    Get the management light read so you know what it means, that should tell you whats caused it.

    I have just got mine settled down after tracking down a faulty boost solenoid (the one on the turbo housing), that caused a bumpy boost pattern and feel during acceleration, but did put on the management light (boost out of range).

    Shev: yours may still be within parameters as you are running CS2 and I'm running CS3 with the VXR unit and uprated actuator, hence no light. There are tests to sort it out and to check what's at fault, Jon is familiar with them due to my car so I suggest a phone call, I'm sure they'll look after you.
    Tell me what you've done, not what you're going to!

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