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Thread: Help! Turbo Boost delivered in waves?!?!?!?

  
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    Wolf Racer's Avatar
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    Help! Turbo Boost delivered in waves?!?!?!?

    Whe accelerating under heavy load ie in 3rd 4th or 5th, my turbo spools up, then the boost seems to die and then come back in a series of waves making the car lurch forward at intervals. I thought it was down to some dodgy fuel as it happened a few months back when i filled up at a "Total" service station on regular RON fuel. After refilling with Shell opitmax the problem went, but it has now returned. I ran the tank dry then put an octane booster and Optimax in. It is still lurching though. Any ideas?
    Rieger'd, K&N'd, Eibach'd, Wolfraced, Arch Rolled, Irm'd, Bailey'd, Custom Chome Exhausted & Debadged....so far...

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    chrisvenn's Avatar
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    I know what you mean mine does this somtimes aswell so will be interested in what it is.
    Arden Blue Astra GSI now sold

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    Wolf Racer's Avatar
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    what fuel do you use? I am convinced it is fuel related as it has only happened when filling up with normal or Supermarket fuel (there was a thread on here a while back saying some supermarket fuel is bit dodgy). Other option is ECU or turbo/actuator playing up?!?!
    CAN ANYONE HELP?
    Rieger'd, K&N'd, Eibach'd, Wolfraced, Arch Rolled, Irm'd, Bailey'd, Custom Chome Exhausted & Debadged....so far...

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    Try doing a search for 'Boost Control Solenoid'

    I suspect that this will be the source of your issues. Vauxhall even admitted they were crap, and released an updated part, its about £22 from a dealers
    Astra GSi Turbo, SOLD


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    I use super unleaded from sainsburys.

    I will do a search then for Boost Control Solenoid its still under warrenty so i will get them to look at it / replace it for me.
    Arden Blue Astra GSI now sold

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    As Andy says it's probably the boost solenoid, the symtoms you describe defo sound like it's the liitle bugger
    Astra Gsi Turbo... With a few choice mods

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    d9vmb's Avatar
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    yeah mine has done this a couple of times as well
    vauxhall had it for a full day and used over half a tank of MY petrol
    and still they said there was nothing worng with it
    Arden Blue GSI (Now gone)
    White Scooby WRX STI (Now stolen)

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    vauxhall are good at not finding faults

    Dave Shek had this and it was the boost control valve thing as mentioned and its only £20 so best gine it a try
    Ibiza FR CR TDI with 203 BHP

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    I went to vauxhall today but only sales open on a sunday so i gotta go back 2morro to book it in. I will tell them what the problem is and what part they need to change to fix it. Has any1 got the part number to hand?
    Arden Blue Astra GSI now sold

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    MikeWarner's Avatar
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    Sounds like what I had when my actuator went weak.
    8 Astras in a row! Can Anyone Beat That?
    Star Silver Astra Sporthatch SRi XP 1.9 CDTi (150PS)
    A Vauxhall site about Vauxhalls.

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