Marius's Touareg R5 life thread. - Page 40




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  1. #781
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    Quote Originally Posted by Fluffy View Post
    mmm,

    I have stayed away from 2SO threads for months now.

    Marius bought a car with a slight missfire on cylinder number 5. I know, I test drove it for him and told him.

    Then he added 2SO and lost an engine and that cost him megabucks.

    Just saying.
    It ran pretty good for 6000km before finally giving up the ghost. How fast would it have failed without 2SO?

    Why has dad done 10s of thousands on his V10 treg with 2SO with no issues.

    Why was only cylinder 5 damaged and the rest on my engine looked new?

    No ways can this be attributed to 2SO.

  2. #782
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    That 2SO did not kill #5. That sounds like it was probably a little nick that went ballistic. A dust particle or something like that.
    LC 78 Troopie 1HD-FTE

  3. #783
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    Quote Originally Posted by Henris View Post
    That 2SO did not kill #5. That sounds like it was probably a little nick that went ballistic. A dust particle or something like that.

    Why did the little nick go ballistic so soon after adding 2SO?
    Cheers

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  4. #784
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    Quote Originally Posted by Fluffy View Post
    Why did the little nick go ballistic so soon after adding 2SO?
    This has been beaten to death. Until someone gives more proof other than some legally obliged mail from the manufacturers, that 2SO is bad I will continue using it and not comment further.

    In closing - my other 4 bores look new on the old engine!

  5. #785
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    Quote Originally Posted by MariusFourie View Post
    It ran pretty good for 6000km before finally giving up the ghost. How fast would it have failed without 2SO?

    Why has dad done 10s of thousands on his V10 treg with 2SO with no issues.

    Why was only cylinder 5 damaged and the rest on my engine looked new?

    No ways can this be attributed to 2SO.
    Because your dads car didnt have a problem in the first place.

    Its an established fact that number 5 was faulty before you added 2SO?

    Thats a given.

    Adding 2SO released the gunk that was holding CYL 5 together.
    Cheers

    ZS5KAD Yeasu Ft-897D
    2 V8's a V6 and an inline 4
    The nice thing about going the extra mile - the road is never congested.

  6. #786
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    Quote Originally Posted by Fluffy View Post

    Adding 2SO released the gunk that was holding CYL 5 together.
    I guess that is a real possability.
    LC 78 Troopie 1HD-FTE

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    Never put ga-ga poefie 2SO in diesel. That's like still believing in the tooth mouse.
    Sent from my iPhone


  8. #788
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    took it for a drive with the computer plugged in.

    Got some fresh diesel in it and drove it back.

    My finger was on the engine clear codes button.

    Driving from standstill with foot flat she goes perfect right up through the gears to 120km/h.

    as soon as I use partial throttle the judder sets in. Keeping my foot stationary I hit the clear engine codes button and immediately the engine smoothes but 4 seconds later the engine judders again.

    From this I gather that the ecu sends signal to injector to fire, which it does, but after a few seconds isn't happy with the resistance measurement and shuts down that injector.

    This tells me the wiring is fine and the injector fires but there is an internal resistance issue.

    I'll take it in to VW next week for them to swap out the injector with new o-rings, adjustment screw, rocker cap bolts and heat shield washer. I have all the parts as I pre-emptively ordered them from ebay a while ago for the old engine. So I just have to fork out some bucks for the labour.

    Hold thumbs for me. I can't wait for the engine to pull the way it does when that injector is firing. She runs like a dream when she is running smoothly!

  9. #789
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    I am sure that the injector is at fault.
    But the way to determine things is to first start at the easiest things. then move onto the more difficult and time consuming issues in order to solve this.
    You have a firing problem which happens in a particular order and given over a particular time.
    You reset the codes when it happens
    The reset works and the signal travelling down the line works
    The injector receives the signal and for 4 seconds works.
    So, first things is to check the injector, Full throttle works as the pulse is continuous, back off the pulse changes.
    The easiest thing was to reset. next easiest is to remove ecu/injector...all depends where the ecu is situated.
    lets say the injector. replace injector , working or not? if no, then move onto the next easiest solution. swap out ecu.
    i doubt its the harness.last and most difficult to replace.
    Electronic problems usually will give a hassle starting on the 5v lines and then the 12v going upwards to the 240v etc

  10. #790
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    Thanks. That's my thinking as well.

    There is some DIY wrapping on a part of the wiring harnass that I opened this morning to check if someone did a botch join.

    Unfortunately not.

    Next step is some diesel purge and then injector swap.

  11. #791
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    i had a good read of that injector pdf you sent and it seems to me that the injectors can give a problem especially with voltages if things go wrong. why it seems that number 5 gives hassles is most odd. Why number 5?
    definately its not 2SO.
    marius , you will have to do some more digging and find out why lots of R5's have this problem. why the number 5 injector, not a heat issue. i think if the ecu is easy to pull out and can be opened, a dry joint could be the cause or an icu , have a look. It could be a signal issue.combined with the pump .
    something doesn't sound right

  12. #792
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    This is what Ross-Tech says about the error code

    http://wiki.ross-tech.com/wiki/index.php/18078/P1670

    The injector fires when the code is cleared so I doubt it's an ecu issue.

    The injector must be the issue. Why it's mostly number 5 is a mystery. Possibly 4 injectors are a set and the fifth is a friday injector. I don't know.

    All I know is I am now feeling pretty low right now. I have a right mind to part the damn thing and get a blister fender diesel.

  13. #793
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    Quote Originally Posted by MariusFourie View Post
    All I know is I am now feeling pretty low right now. I have a right mind to part the damn thing and get a blister fender diesel.
    Just don't get one like I did...my costs must be rivaling yours by now Get a 3.5 V6 blister
    IFS is like a swambo, soft, sexy and expensive!

    Apparently I need to make the airplane noises like mommy does when I try to spoon feed you the info..

  14. #794
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    Quote Originally Posted by MariusFourie View Post
    This is what Ross-Tech says about the error code

    http://wiki.ross-tech.com/wiki/index.php/18078/P1670

    The injector fires when the code is cleared so I doubt it's an ecu issue.

    The injector must be the issue. Why it's mostly number 5 is a mystery. Possibly 4 injectors are a set and the fifth is a friday injector. I don't know.

    All I know is I am now feeling pretty low right now. I have a right mind to part the damn thing and get a blister fender diesel.
    You have come far, hang in there. This is a minor issue that will be sorted. At least you already have the parts required.

    Remember you have a whole community admiring your skill.

    Just for reference, the injectors in the motor presently, are the ones coming from the donor unit, correct?

    I would think no 5 injector could certainly be more prone to electrical failure as there is more heat at no5 than elsewhere.
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  15. #795
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    ok, i have just read that thing on the error codes.
    logic says its not the harness.or all the injectors would be giving hassles.
    with such a low voltage pulse, the connections would have to be super clean and connected well.
    i say replace injector 5 and your hassles will be sorted

  16. #796
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    No, the injectors in the engine is from the donor. I have the old injectors in a box from the old engine.

  17. #797
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    ok. i have heard that on some engines the injectors need to be coded or they wont work.
    does the R5 have coded injectors

  18. #798
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    No coded injectors.

    The ecu adjust automatically the variances in injectors based on the crank acceleration picked up by the cam positioning sensor.

    Based on the measuring blocks (vagcom Engine 01 - fields 013 [cyl1-4] & 014 [cyl5]) for the adj. quantity variances between cylinders this only happens at idle.

  19. #799
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    Coming in late here, and please bear in mind I'm a novice with this sort of thing, but have you re-coded the injectors? An injector that's not coded will run "rough". If you haven't done it it may be worthwhile taking out injector #5, checking the code written on it and then re-coding it on your computer once it has been replaced.

    EDIT - Oops, my typing is a bit slow. Pointless if the injectors aren't coded, apologies.

  20. #800
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    Quote Originally Posted by RobH View Post
    Coming in late here, and please bear in mind I'm a novice with this sort of thing, but have you re-coded the injectors? An injector that's not coded will run "rough". If you haven't done it it may be worthwhile taking out injector #5, checking the code written on it and then re-coding it on your computer once it has been replaced.
    Can you provide details of this? All 5 injectors are from the same donor engine and haven't been touched. Why is only one misbehaving?

    Can you point to a reference stating that PD injectors need to be coded?

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