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1.9TDi sport - total loss of power

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by AndyMac, Mar 9, 2007.

  1. AndyMac
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    AndyMac Moderator Staff Member Moderator

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    [Mar 9, 2007]
    Car was running fine this morning, then tonight suddenly no power, like the turbo has been disconnected. It still runs OK but won't go above about 3000 revs. There's no warning lights showing and I don't have VAGCOM to see if there are any faults.
    Anyone with any ideas before I take it in to the garage?
    #1
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  3. Mcgough
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    Mcgough Member

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    [Mar 10, 2007]
    Doe the fault reset when stopping and removing the keys?? the come on when you accelerate with some force if so then yep, its probs a maf sensor or worse in my case the turbo!!


    had this problem loads they changed a few sensors the maf sensor and then after a total of 8 weeks in garage they changed the turbo as the vains where apperently sticking open- never had problem again but the car made me mad so i got rid of it and sold it on.

    replaced it with like for like though
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  4. AndyMac
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    AndyMac Moderator Staff Member Moderator

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    [Mar 10, 2007]
    Well that's wierd, it's totally fine this morning. I cleaned out the air intake, but nothing out of the ordinary in the airbox. Removed the MAF, not sure why as no idea what I thought I'd find. Replaced everything and it's back to normal, although when I first unlocked the car all the windows opened for some strange reason, never done that before.
    Hope it is just the MAF, would the turbo display an intermittant fault? It's going in on Wednesday to have a wheel bearing replaced so I'll see if it throws up any errors.
    Thanks for the reply.
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  5. Mcgough
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    Mcgough Member

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    [Mar 10, 2007]
    My car used to been fine for a few days also then re-fault when i least expected it!!

    although i could always get it to do it at spot on 100mph in 4th
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  6. AndyMac
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    AndyMac Moderator Staff Member Moderator

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    [Mar 10, 2007]
    Couldn't even get past 65mph last night, so hopefully it's not the turbo.
    Cheers again, Andy
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  7. samuelt
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    samuelt Member

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    [Mar 11, 2007]
    If you hold the open button in on the remote your windows will go down, my BMW convertible did this as well but also put the roof down while you walked towards it!!

    Is it possible that you did this?
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  8. AndyMac
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    AndyMac Moderator Staff Member Moderator

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    [Mar 14, 2007]
    "although i could always get it to do it at spot on 100mph in 4th" ummm, dropping a TDi down a cog at 100mph will really get that extra boost of acceleration, it's a hidden feature after the rev limiter cuts in.
    The windows just opened automatically without holding any buttons down.
    Anyway, ABTech had a look at it today and it appears it's some sort of wastegate solenoid that's playing up causing the engine to go into limp mode.
    Replaced the solenoid and all back to normal. Thanks for the replies.
    #7
  9. J7USS
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    J7USS Shuddup Foooool!!

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    [Mar 14, 2007]
    Andy, is that the N75j Valve or whatever you call it????
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  10. AndyMac
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    AndyMac Moderator Staff Member Moderator

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    [Mar 15, 2007]
    No idea, they couldn't print me a receipt as their system was down, but they're sending it in the post, so I'll let you know when I receive it.
    #9

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