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Why did the boost fail ?

Discussion in 'General Technical / How To' started by rickquattro, Dec 21, 2003.

  1. rickquattro
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    rickquattro Member

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    [Dec 21, 2003]
    Can anyone shed any light on this ?

    Driving hard uphill, the boost felt like it just stopped leaving the car doing 50mph with no acceleration.

    The car would idle ok. I stopped it, left it for a minute and all was well on restarting.

    Whats this all about ?

    TDi Quattro, superchipped, thats all.

    Thanks

    Rick /ubbthreads/images/graemlins/beerchug.gif
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  3. rickquattro
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    rickquattro Member

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    [Dec 24, 2003]
    Thats interesting !

    My car has only done this on one occasion and went completely flat. I admit that I was ragging it up hill in fifth but it caught me out when it happened. I dont usually bounce it off the rev limiter but use the torque. On the occasion that it happened I had just passed a saab up the hill and he must have been amused to re pass me doing no more than 55mph. How embarrasing. The car re set itself asfter being turned off and left for 30 seconds or so.

    Does your car still do this or has it stopped ? I was warned by the superchips dealer that the turbo would be working harder. Maybe this is what that looks like.

    Thanx

    Rick
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  4. Alonzo
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    Alonzo Member

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    [Dec 24, 2003]
    Hi Rick,
    Since i was informed what the problem was and what could bring it on it has never returned.....
    Basically if you maintain around 4000+rpm for ages then it may occur but generally doesnt....but if you fly through the gears changing @ 4000rpm then you should have nothing to worry about...
    Just an interesting point i've recieved from the tuning company is that the the fault is caused by the E.C.U thinking its recieving too much boost so it switches to limp-home mode until reset.
    According to the company they said they could do an E.C.U software upgrade which will eliminate this problem altogether...
    Hope this helps and i'l keep you posted.

    Danny
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