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S2 Overboost Problem

sss222 Feb 20, 2004

  1. sss222

    sss222 New Member

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    Hi,
    I have a 1993 S2 6 speed which is awesome but because of a hugely annoying intermittent problem I am at the end of my tether with it. Basically under hard acceleration the car is liable to lose all power for a split second. Once this has happened the first time it will happen again with the slightest boost. If I switch the car off and start up again it may be fine for another few weeks!!! It always seems to happen when I really dont want it to like overtaking a truck on an A road.

    I have tried the following;

    Changed the boost control valve
    Changed the lamda probe
    Changed the MAF meter
    Had the MAF meter wiring block re-wired.
    Tried sweet-talking the car

    None of which have solved it. I have already spent lots on diagnostics and havent even come close. Any ideas would be very much appreciated.

    I am in the UK

     
  2. 20vTurboS2

    20vTurboS2 New Member

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    I have the same problem on my '94 S2 (ABY engine code). However, it's only surfaced twice in 3 years, each time it was in the winter when the whether was pretty cold. Let me know if you manage to solve your problem.

    Mick
     

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