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  1. #1
    Registered Member One Ring
    Join Date
    Sep 22 2018
    AZ Member #
    427317
    Location
    Stuttgart Germany

    How bad (and how normal) is my rattle?

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    After getting the replacement engine, sometimes I get a very concerning rattle. What I find odd compared to all the videos I've seen so far, is that in most videos the rattle comes right at startup, while for me, it comes when the revs come down to idle. Am I crazy? Is this normal? Any advice?

    The car had been sitting in the lot for about 8 hours, outside temperature quite mild...



    Thanks!

  2. #2
    Active Member Two Rings
    Join Date
    Jun 15 2016
    AZ Member #
    374727
    Location
    Boston

    Iím afeared you have between 38 and 3,800 cold starts left until sheís chowdered


    Sent from my iPhone using Tapatalk

  3. #3
    Registered Member One Ring
    Join Date
    Sep 22 2018
    AZ Member #
    427317
    Location
    Stuttgart Germany

    Oh wow that's helpful thanks!

    No, seriously, this sounds to me different different that any other rattle on the internet, and there's as few. So I wonder if it could be due to something else since the engine almost seems to come to stall and the slap comes as the revs go down...

  4. #4
    Registered Member One Ring
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    Sep 22 2018
    AZ Member #
    427317
    Location
    Stuttgart Germany

    As I read in a German Forum, this could have to do with some vaccum actuator. TPI 2009648/4 is referenced but all is in German and I don't have the brains now...will try to read it tomorrow. If someone has some info in English it would me much appreciated...

  5. #5
    Senior Member Four Rings VinnysS4's Avatar
    Join Date
    Nov 12 2015
    AZ Member #
    364349
    Location
    Oregon

    For what it's worth, mine made this sound before I did my timing and had a broken guide. There is always the oil check valves too. It's hard to say what exactly is causing the rattle. I would get a stethoscope and put it on the rear timing covers and start it to See if you can narrow down the sound

    Sent from my SM-N920V using Tapatalk
    1997 VW GTI VR6 (sold), 2003 Audi RS6 (sold), 2010 Audi A4 2.0T (RIP Totaled on 11/2/2015 ) 2005.5 Audi S4

    My build log
    http://www.audizine.com/forum/showth...-s-s4-timeline

    Texpoops "Correct, but a half inch difference isnít going to accelerate wear by much. Iím sure the front dips that much with a fatty in the front"

  6. #6
    Senior Member Two Rings stevemiller333's Avatar
    Join Date
    Oct 22 2016
    AZ Member #
    383668
    My Garage
    05 B6 S4 SDN, E46 M3 VERT, 2016 F150
    Location
    Rochester, NY

    This german page says this among other interesting stuff, link, https://www.motor-talk.de/blogs/s4faq

    Rattling noise during (cold) start

    Many believe that metal-shattering rattling sounds, like here or here , come from the chain drive just about 2 seconds after cold and occasionally after warm start.

    I was never convinced of that and after careful observation I localized the cause in the vacuum system instead. However, I was subject to the erroneous assumption that the rattling would occur in the vacuum hoses intake manifold suction jet BKV. Well, the vacuum system is really involved, because the Saugrohrumschaltung is realized via negative pressure.

    In fact, the audible, loud rattling noises but arise in the intake manifold. The TPI 2009648/4 informs us officially that the solenoid valve to intake manifold switching is controlled "too early", which leads sporadically due to unfavorable vacuum conditions in the intake manifold to vibrations of the inner Saugrohrwalze and this "hard, metallic rattling noise" can cause.

    Surprisingly, the effect can often be greatly reduced by placing a thermostable cable tie or hose clamp around the hose lead-through / rubber grommet in the bulkhead, which supplies the brake booster with negative pressure. The reason will be that under pressure leaks probably amplify the effect, sometimes dramatically.

  7. #7
    Registered Member One Ring
    Join Date
    Sep 22 2018
    AZ Member #
    427317
    Location
    Stuttgart Germany

    Quote Originally Posted by VinnysS4 View Post
    For what it's worth, mine made this sound before I did my timing and had a broken guide. There is always the oil check valves too. It's hard to say what exactly is causing the rattle. I would get a stethoscope and put it on the rear timing covers and start it to See if you can narrow down the sound

    Sent from my SM-N920V using Tapatalk
    thanks....the guides are fine, I just installed a replacement engine last week and did check the guides before putting it in. Did not replace the oil check valves / valley pan gasket though, which might have been a mistake...time will tell...

  8. #8
    Registered Member One Ring
    Join Date
    Sep 22 2018
    AZ Member #
    427317
    Location
    Stuttgart Germany

    Quote Originally Posted by stevemiller333 View Post
    This german page says this among other interesting stuff, link, https://www.motor-talk.de/blogs/s4faq

    Rattling noise during (cold) start

    Many believe that metal-shattering rattling sounds, like here or here , come from the chain drive just about 2 seconds after cold and occasionally after warm start.

    I was never convinced of that and after careful observation I localized the cause in the vacuum system instead. However, I was subject to the erroneous assumption that the rattling would occur in the vacuum hoses intake manifold suction jet BKV. Well, the vacuum system is really involved, because the Saugrohrumschaltung is realized via negative pressure.

    In fact, the audible, loud rattling noises but arise in the intake manifold. The TPI 2009648/4 informs us officially that the solenoid valve to intake manifold switching is controlled "too early", which leads sporadically due to unfavorable vacuum conditions in the intake manifold to vibrations of the inner Saugrohrwalze and this "hard, metallic rattling noise" can cause.

    Surprisingly, the effect can often be greatly reduced by placing a thermostable cable tie or hose clamp around the hose lead-through / rubber grommet in the bulkhead, which supplies the brake booster with negative pressure. The reason will be that under pressure leaks probably amplify the effect, sometimes dramatically.
    the "Saugrohrumschaltung" is the activation of the intake manifold. Just left the car at the Audi dealer for the SW update, will report how it works in a couple of days

  9. #9
    Registered Member One Ring
    Join Date
    Sep 22 2018
    AZ Member #
    427317
    Location
    Stuttgart Germany

    I was just on the phone with the dealer. No update was done because even though they have the CD, they could not play it. They don't know if the equipment is too old, or the CD is damaged, all they know is it doesn't work so the advice is go and find another dealer and try again.

    I'll be travelling for the next two weeks (without the car, I go to South Korea :D) so I'll resume this when I'm back, it doesn't make sense to start calling dealerships now...

  10. #10
    Senior Member Two Rings stevemiller333's Avatar
    Join Date
    Oct 22 2016
    AZ Member #
    383668
    My Garage
    05 B6 S4 SDN, E46 M3 VERT, 2016 F150
    Location
    Rochester, NY

    Very interested in this update. Is there an ID number for this software? I read about burning a cd and bringing it to a dealer but that sounds a little far fetched to me.

  11. #11
    Registered Member One Ring
    Join Date
    Sep 22 2018
    AZ Member #
    427317
    Location
    Stuttgart Germany

    PN engine ECU Version PN Update CD
    8E0910560 0020, 0030, 0040 8Z0 906 961 B
    8E0910560 R 0010, 0020 8Z0 906 961 B
    8H0910560 0010, 0020, 0030 8Z0 906 961 B
    8H0910560 A 0010 8Z0 906 961 B
    8E0910560F 0010, 0020 4E0 906 961 J
    8E0910560S 0010 4E0 906 961 J
    8E0910560D 0020, 0030 4E0 906 961 J
    8H0910560D 0010, 0020 4E0 906 961 J
    8H0910560N 0010 4E0 906 961 J
    8H0910560M 0010 4E0 906 961 J


    Depends on your engine. Mine would be 8Z0 906 961 B. If you find it, please PM me!
    Last edited by ibuprofen600; 10-12-2018 at 11:10 AM.

  12. #12
    Senior Member Two Rings stevemiller333's Avatar
    Join Date
    Oct 22 2016
    AZ Member #
    383668
    My Garage
    05 B6 S4 SDN, E46 M3 VERT, 2016 F150
    Location
    Rochester, NY

    Quote Originally Posted by ibuprofen600 View Post
    TN engine ECU Version TN Update CD
    8E0910560 0020, 0030, 0040 8Z0 906 961 B
    8E0910560 R 0010, 0020 8Z0 906 961 B
    8H0910560 0010, 0020, 0030 8Z0 906 961 B
    8H0910560 A 0010 8Z0 906 961 B
    8E0910560F 0010, 0020 4E0 906 961 J
    8E0910560S 0010 4E0 906 961 J
    8E0910560D 0020, 0030 4E0 906 961 J
    8H0910560D 0010, 0020 4E0 906 961 J
    8H0910560N 0010 4E0 906 961 J
    8H0910560M 0010 4E0 906 961 J


    Depends on your engine. Mine would be 8Z0 906 961. If you find it, please PM me!
    Thanks, called Audi of Rochester, they had no idea what I was talking about.

  13. #13
    Registered Member One Ring
    Join Date
    Sep 22 2018
    AZ Member #
    427317
    Location
    Stuttgart Germany

    More reading....in order to install the update, the dealer needs to have the Originaltester VS-505x. Theoretically it's also online in the SVM... theoretically...



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