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What have you done to your A4 b6 today?

krisavant Mar 18, 2014

  1. Wahlstrom

    Wahlstrom Active Member

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    It does, it comes back every time the car stalls.

    The things changed are removing ecu, shipping it, remap through boot, ship it back, install.

    Did the same 6 years ago when a got a normal remap
     
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  3. Wahlstrom

    Wahlstrom Active Member

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    So, I went out and refitted the ecu and battery..
    Put it in acc and cleared codes in engine, abs, instrument, and a few others. They all had some ecu related codes.

    Started it and it ran normally. Took some readings.
    After 5-6 minutes it stalled..
    No codes, no lost communication. Just stalling.
    Can start it again, sounding normal, but stalls again after 10-15 sec.

    Tried to press the accelerator. The turbo and engine spooled normally, until just before it stalled, then turbo wouldn’t spool and it died
     
  4. Wahlstrom

    Wahlstrom Active Member

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  5. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    I think you need to speak to the person who mapped the ECU.

    Sent from my ANE-LX1 using Tapatalk
     
  6. Wahlstrom

    Wahlstrom Active Member

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    Yes.. that my last resort..
    Just one thought, could it be related to temperature.. as soon as the engine gets warmer it reached a point and stops.

    Could be why it could idle for 10 minutes to start with, and after it stalled the first time, cools down 0.1 degree and then idles for 10 sec and stalls
     
  7. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    Try disconnecting the coolant temperature sensor and see if that changes anything. Also inspect the wiring from that sensor.

    Sent from my ANE-LX1 using Tapatalk
     
  8. Wahlstrom

    Wahlstrom Active Member

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    Ok, I’ll try later
    just went out and started it. Idled fine and rev’ed fine.. this time I shut the engine off.. as it gives some proof that perhaps the temperature could be the reason it stalls
     
    QuattroCalum likes this.
  9. Wahlstrom

    Wahlstrom Active Member

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    Engine won’t start with the G62 unplugged..
    It just starts and stops..

    Fitted it again, cleared the coded, then it ran fine again until it reached ~41 *C, then stopped..

    I’m trying to reach out to the tuner, but with Easter coming up, it will be hard.
    So I’ll be going through Easter with no car
     
  10. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    Did you check the wiring for the coolant temperature sensor?

    Sent from my ANE-LX1 using Tapatalk
     
  11. Wahlstrom

    Wahlstrom Active Member

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    No but can’t see why it should break on its own through Thrusters night.

    Must be an error in the map..
    If only I could get it to drive in limp
     
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  13. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    Do you have an old coolant temperature sensor? You could plug that in and secure it to the wiring loom, so it won't see the engine temperature.

    Sent from my ANE-LX1 using Tapatalk
     
    Wahlstrom likes this.
  14. Wahlstrom

    Wahlstrom Active Member

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    The tuner guy says that the reason is the injectors being worn and can’t deliever enough diesel for the map..
    But I can’t believe that the injectors are the culprit.
    Not according to the data from vcds..

    He requested a film, filming from cold start until it stalls..
    It stalls exactly around 41 degrees every time

     
  15. Wahlstrom

    Wahlstrom Active Member

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    Damn.. disconnected the wrong sensor.. the fuel sensor..
    Will try to disconnect the right sensor tomorrow. Tuner says it should be able to drive then..
    What causes it, he’s now unsure off..
    But we’ll find out when it gets on the dyno
     
  16. Wahlstrom

    Wahlstrom Active Member

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    Well disconnecting the right one didn’t do anything.
    Code came on, G62 no connection.
    Vcds Engine Block 1 still showed coolant temperature, and it went out at ~41degrees.

    Ecu shipped today to tuner, he will put on a standard map, car ran before, but with crazy idle.
    I’ll then drive to him(about 130miles) and get a custom map while on dyno...

    Best solution, should have started with it...
     
  17. Wahlstrom

    Wahlstrom Active Member

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    While the car isn’t moving, I had time yesterday at work to reassemble my wheels...
    Just 3 more to go
    [​IMG][​IMG]
     
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  18. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    Those rims are beautiful.

    Sent from my ANE-LX1 using Tapatalk
     
    Wahlstrom likes this.
  19. Wahlstrom

    Wahlstrom Active Member

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    Well I just can’t get rid of problems l.
    Received the ecu with a map that the engine can run, but when it reached 90 degrees, I checked block 13
    [​IMG]

    Either the injector seat/hole is oval or it’s a bad injector l

    Will try and swap injector 3 and 4
     
  20. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    Could be the o rings on the injectors, notoriously bad for leaking. Even after changing the injector seat and o rings, they still leak. You can buy billet alloy ones at £50 for a set.

    Sent from my ANE-LX1 using Tapatalk
     
  21. Wahlstrom

    Wahlstrom Active Member

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    Already gave them new O rings..
     
  22. Wahlstrom

    Wahlstrom Active Member

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    How come the values were fine before, and now with the new map, suddenly one is off???
     
  23. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    Maybe the injector seat has cracked, try spraying in there with Plus Gas or Brake cleaner, you'll hear the engine note change if it has.

    Sent from my ANE-LX1 using Tapatalk
     
  24. Wahlstrom

    Wahlstrom Active Member

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    Can’t image how I’ll do that
     
  25. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    Use the straw, place next to the injector/ injector seat and spray it.

    Sent from my ANE-LX1 using Tapatalk
     
  26. Wahlstrom

    Wahlstrom Active Member

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    With the top off oil will spray all over the place??
    And brake cleaner for example will get in the oil
     
  27. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    I don't think you understand what I mean. Where the fuel injector sits in the inlet manifold, that is the injector seat.
    To check if it's cracked spray plus gas into the injector seat when the engine is idling, if it is cracked you will hear the engine note change and possibly see it draw the fluid in. The engine will burn it off, no need to worry about your oil or anything.

    Sent from my ANE-LX1 using Tapatalk
     
  28. Wahlstrom

    Wahlstrom Active Member

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    It’s a PD.. the injectors are located top of the head
     
  29. Wahlstrom

    Wahlstrom Active Member

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  30. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    Forget everything I posted, I have zero experience with diesels.

    Sent from my ANE-LX1 using Tapatalk
     
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  31. Wahlstrom

    Wahlstrom Active Member

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    Went for a longer test drive today.. car pulls fine, better than before.. so something positive has happened.
    Tuner requested a boost log, to make sure it didn’t go over 2750mbar for longer periods.
    It stays right around 2700 at full throttle/boost

    But the thing with cylinder 4 is a mystery for me.

    When the injectors were fitted I drove home but with very rough idle.
    Back then I checked block 13, and they had close to perfect values.

    Now with the remap, cylinder 4, shows a + 1.4-2.0 mg in idle..
    So something is bad in cylinder 4..

    Have the values changed to a more realistic number now that the ecu is remapped?

    And what is wrong, bad injector? Or misfitted O rings?
     
  32. Wahlstrom

    Wahlstrom Active Member

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    Found this measuring block(18)... after 1 min, still 0.0 and all 4
    [​IMG]
     
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  34. Wahlstrom

    Wahlstrom Active Member

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    Another block found.. don’t know how and when, but in idle, cylinder 4 goes above -100 periodically
    [​IMG]
     
  35. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    It's it driving okay? If so I wouldn't get hung up over those numbers.

    Sent from my ANE-LX1 using Tapatalk
     
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  36. DieselJake

    DieselJake Well-Known Member VCDS Map User

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  37. Wahlstrom

    Wahlstrom Active Member

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    It drives very good..

    Experienced a very very short lag in power around 4K
    But other than that it pulls imo perfectly
     
  38. Wahlstrom

    Wahlstrom Active Member

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    I just can’t get the reading from cyl 4 In block 13 out of my head
     
  39. QuattroCalum

    QuattroCalum Well-Known Member Saloon saloon Audi A4 Black Edition Manual

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    Personally I'd just drive it and try to forget about those numbers. It's easy to over think things.

    Sent from my ANE-LX1 using Tapatalk
     
  40. Wahlstrom

    Wahlstrom Active Member

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    But it’s not normal values.. something is wrong
     
  41. winterrB6

    winterrB6 Active Member

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    Stared painting it with rusty paint :whistle2:

    24ACA835-32C5-45EE-B365-D6212ECEC677.jpeg
     
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  42. winterrB6

    winterrB6 Active Member

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    Rusty paint on the bonnet and started fitting the FMIC, realised the SAI has to be removed though so I can route the FMIC pipework to the turbo

    FDDE07F1-E089-456B-AD9E-A2BB8C8353BB.jpeg
     
  43. stevey83

    stevey83 Member

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    is it possible to remove the front bumper without taking the front wheels off?
     

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