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Turbo fails. If I turn car on/off it returns. Could it be anything else? to fix $?

  • 11-12-2009 10:58am
    #1
    Registered Users, Registered Users 2 Posts: 4,615 ✭✭✭


    Two days ago I noticed I had a tiny bit of acceleration, no turbo.

    Turn ignition on/off and all was fine.

    Same thing yesterday, but it happened twice.

    I added oil last week (def same type as when serviced) Its over due a service by about 4K.

    I don’t think I added too much, (checked with the dip then) will double check today.

    Could it be anything apart from Turbo?
    Is it very expensive if it is?


Comments

  • Registered Users, Registered Users 2 Posts: 38,247 ✭✭✭✭Guy:Incognito


    What car is it?


  • Registered Users, Registered Users 2 Posts: 6,342 ✭✭✭alias no.9


    If the turbo is intermittantly failing, it's only going to get worse. Get it lifted to a garage as soon as you can, driving it like this could be catastrophic for the engine.

    Just reread your OP, oil changes are vital for Turbo cars, neglecting them can fry your turbo. It's not good enough to top up the oil, oil and filter needs changing to schedule.


  • Registered Users, Registered Users 2 Posts: 17,819 ✭✭✭✭peasant


    The turbo is a purely mechanical component. It is not affected by switching the car on/off.

    Your fault must lie with the electrics/electronics.


  • Registered Users, Registered Users 2 Posts: 4,615 ✭✭✭worded


    Audi a6 2003 Turbo


  • Registered Users, Registered Users 2 Posts: 2,800 ✭✭✭voxpop


    MAF - the symptoms of a dodgy one is a sensation of no turbo when you accelerate.


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  • Registered Users, Registered Users 2 Posts: 12,703 ✭✭✭✭R.O.R


    worded wrote: »
    Audi a6 2003 Turbo

    1.8T or 1.9Tdi?

    If it's the 1.8T could also be the coils about to give up the ghost. Any engine light?


  • Registered Users, Registered Users 2 Posts: 4,615 ✭✭✭worded


    voxpop wrote: »
    MAF - the symptoms of a dodgy one is a sensation of no turbo when you accelerate.


    Yes that sounds like it.
    If i then switch on and off its ok.

    Mmmm

    Will get it looked at.


  • Registered Users, Registered Users 2 Posts: 4,615 ✭✭✭worded


    1.9

    No warning lights on dash.


  • Registered Users, Registered Users 2 Posts: 2,800 ✭✭✭voxpop


    Yeah the MAF (Mass Air Flow) is a sensor, so when its coming to the end of its life (they are generally considered a consumable) the sensor can partially fail - the car goes into limp mode and its like having no turbo. Turning the car off and on again can reset the error, though its only going to get worse. Replacements sensors are ~100 and are easy to fit.


  • Registered Users, Registered Users 2 Posts: 4,615 ✭✭✭worded


    voxpop wrote: »
    Yeah the MAF (Mass Air Flow) is a sensor, so when its coming to the end of its life (they are generally considered a consumable) the sensor can partially fail - the car goes into limp mode and its like having no turbo. Turning the car off and on again can reset the error, though its only going to get worse. Replacements sensors are ~100 and are easy to fit.

    Hopefully its only that so, please god.


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  • Registered Users, Registered Users 2 Posts: 4,615 ✭✭✭worded


    If its the MAF, is there a danger of messing up the engine or is it an inconvenience?


  • Registered Users, Registered Users 2 Posts: 3,792 ✭✭✭Neilw


    worded wrote: »
    If its the MAF, is there a danger of messing up the engine or is it an inconvenience?

    Disconnect the maf and go for a drive, if the power is back it's your maf. Don't forget to reconnect it.

    I don't think it's the maf myself, I recon it's turbo trouble.


  • Registered Users, Registered Users 2 Posts: 2,279 ✭✭✭PaulKK


    Sounds like a split pipe or intercooler problem to me, the limp home is being reset when you restart the car.

    Similar problem happened to me on my passat and it was a split pipe.

    I very much doubt its the turbo itself, it either works or it doesn't.


    BTW, letting your car go 4K overdue for a service is not a good idea, I service my 1.9TDI every 5K miles, nearly what yours is overdue by.


  • Registered Users, Registered Users 2 Posts: 464 ✭✭alo1587


    Sounds like a faulty boost solenoid,common problem on VW/Audi's.Not crazy money to fix if it is.


  • Registered Users, Registered Users 2 Posts: 4,615 ✭✭✭worded


    PaulKK wrote: »
    Sounds like a split pipe or intercooler problem to me, the limp home is being reset when you restart the car.

    Similar problem happened to me on my passat and it was a split pipe.

    I very much doubt its the turbo itself, it either works or it doesn't.


    BTW, letting your car go 4K overdue for a service is not a good idea, I service my 1.9TDI every 5K miles, nearly what yours is overdue by.

    Been advised its a leaking pipe.
    The cost is a big? They said they may need to keep it in overnight if a part is needed.

    Planking as to the cost, they said they dont know whats hours/parts involved.
    Anyway its going in on Tues to be fixed.

    Was half thinking of trading her in and not going through all this.


  • Registered Users, Registered Users 2 Posts: 2,800 ✭✭✭voxpop


    Leaking pipe is not going to be a big cost or take a long time to fix. Might take some time to find the leak perhaps, but otherwise its a quick job.


    Edit: Im assuming the pipe in question is part of the boost / air system.


  • Registered Users, Registered Users 2 Posts: 4,615 ✭✭✭worded


    voxpop wrote: »
    Leaking pipe is not going to be a big cost or take a long time to fix. Might take some time to find the leak perhaps, but otherwise its a quick job.

    I just hope they dont make a big deal out of it is all. At mechanics mercy.


  • Registered Users, Registered Users 2 Posts: 9,592 ✭✭✭tossy


    I'd doubt it's a leaking pipe.More likely the sticking veins in the turbo,there is an actuator on these that make the veins spin faster as the need for more boost is needed,this can go faulty and cause the veins to stick.


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