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View Poll Results: help

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  • is it an easy strip & clean

    2 50.00%
  • are there any upgrade for the turbo

    3 75.00%
Multiple Choice Poll.
Results 1 to 10 of 10
  1. #1
    Reverse Gear

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    Unhappy a4 99 2.5 tdi over boosting

    have been informed by star perforance that turbo is sticking and over boosting how easy to strip vnt turbo and clean
    or
    can i upgrade turbo and fit the chip i have got and take out the cat
    any info

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  3. #2
    Defratos's Avatar
    Youre Dethpicable!!

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    I don't get it
    2002 S3 BAM | Jabba Re-Map | Uprated Haldex | Koni adjustable coilovers | Neuspeed ARBs | Powerflex Bushes | ECS tie-bars | Dog bone | Eibach spacers | TTDA | T'Dynamics DV | Dieselgeek short shift | Toyos | MIJ Custom Exhaust | Sound system | Security Tints |

    Audi S3-BAM

  4. #3
    Rev-head's Avatar
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    Need to be a bit more clearer with info.......Turbo Sticking are you sure they said that ..sure it was not the EGR Valve sticking.........Could you explain fault a little more and you might get a better idea of a solution for it

    Cheers
    Urq RR
    S2 Coupe...RS2 +
    S2 Avant (slipper wagon spec)
    A4 AVANT TDI

  5. #4
    Broken Byzan's Avatar
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    Wastegate sticking maybe??

  6. #5
    dummi's Avatar
    smoking a6

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    if it is waste gate actuator just remove the old one and replace it , it is externally mounted and functioning on the turbo (not sure what space is like on your model you may be able to reach it if you have small hands..), relatively easy to do than taking the turbo off straight away. if this cures it your done. if it is the wastegate sticking that will be internal to the exhaust housing of the turbo , this is a turbo off job.
    just a little a6

  7. #6
    Reverse Gear

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    they said cleary that the turbo was stick and over boosting then going into limp home mode not easy when your comeing of a round about going up hill towing a caravan after a minute restart and speed crept up they and quoted 700+vat fitted

  8. #7
    1st Gear

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    if its over boosting it will probably be a sensor. the 2.5 tdi does not have a wastegate. the boost is controlled by varing the veins via the ecu. if the turbo was sticking you wouldnt be going anywhere.
    Formally a4 2.5 tdi (b5)
    Now Seat Ibiza tdi 130

  9. #8
    K7ERG's Avatar
    2nd Gear

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    If turbo sticking it will probably be the bearings on the shaft that have failed causing the compressor wheels to jam on the turbo housing.
    Audi A6 2.5 5Cyl tdi Quattro running 180ps 370Nm @0.9bar soon to be over 200ps

    AUDI URS4, URS6 and A4 1.8T breaking Lots of spares available at good prices. Large parts require collecting.

  10. #9
    2nd Gear

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    this happened on my A3 1.9 TDI. basically the bearings wear on the turbo, causing shaft wobble, causing oil to mist out past the seals - this oil then mixes forms a paste which then sticks the VNT veins (normally when they open fully) - hence ECU senses overboost and puts the car into limp mode. switching ignition off clears the fault code and resets > everything is fine until it happens again..........

    I got my turbo refurbished and did all the work myself - £350 versus £950 Audi dealer quoted!

  11. #10
    Jason's Avatar
    1st Gear

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    Classic known problem on this age and model of vehicle!

 

 

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