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  1. Day 4-7: no change Drove the car last weekend...

    Day 4-7: no change

    Drove the car last weekend on two long trips. Perfect - not even the slightest odd behavior.

    This ticket is now closed!
  2. Day 2: For the next week, taking the car out for...

    Day 2: For the next week, taking the car out for it's first spin around the block. Wife said no problems yesterday. It drove perfectly this morning on about a 1 mile spin - and a storm had really...
  3. Cautious Optimism Yesterday late afternoon, I...

    Cautious Optimism

    Yesterday late afternoon, I decided to just pull the throttle out, and investigate the gears - to look for anything (dirt, particles, etc) that might impair movement. But first,...
  4. Its getting worse. I drove it about 60 miles on...

    Its getting worse. I drove it about 60 miles on Sat somewhere, then 60 miles back. When less than 20 minutes of driving, it was almost undriveable. Its kinda sorta got better at 65MPH, but it was...
  5. I didn't have time - still a working stiff. The...

    I didn't have time - still a working stiff. The booster hose is hard so I'll have to remove the crimped on clamp then find a way to plug the hole into the engine. Obviously the N80 & LDP vacuum line...
  6. Early this morning with a totally cold car,...

    Early this morning with a totally cold car, hooked up VCDS and monitored 32,33, and 16. Started car. Idled a bit high, then settled down. Misted the right side, the side, and the back heavily - no...
  7. The N80 was brand new when the ECU was replaced....

    The N80 was brand new when the ECU was replaced. When the original problem that caused my ECU nightmare first started, it was a cracked vacuum line near the dip stick, it was what caused the LDP to...
  8. I waited a few hours, and tried the misting...

    I waited a few hours, and tried the misting experiment. I took all engine covers off, set up VCDS to monitor 15 and 16, started the engine, and misted the hell out of the driver side intake manifold,...
  9. Wife drove car all day Tuesday, said it was rough...

    Wife drove car all day Tuesday, said it was rough when cold, then smoothed out. She got home late afternoon, took it out while hot and it drove perfectly.

    This morning took it out myself. Cold...
  10. Jack hits another home run (well, hoping this...

    Jack hits another home run (well, hoping this sticks!) I was ready to trade the car in after 2 years f'ing around with that damn damaged ECU, then having it run like sh*t.

    Anyway, Jack, thanks...
  11. I'm sitting here stunned. So after resetting the...

    I'm sitting here stunned. So after resetting the DTCs, it drives like a new car. In fact, the car is better than it was when we got it in 2011.

    From the day we test drove the car, it had what was...
  12. Your description of going to OBD-II was not as...

    Your description of going to OBD-II was not as described: "Go in VCDS main screen and click on button OBD2 and also says hex address 0x33 then scan and select Mode 9 and log"

    I went to OBD2 and...
  13. I looked - there are no DTCs to reset - no error...

    I looked - there are no DTCs to reset - no error codes. When I went into Mode 9 it said all was well, nothing wrong.

    That full log has in the 3rd quarter a real road test - 25 MPH. You can see the...
  14. On my 2009 I build a manometer for about $5 worth...

    On my 2009 I build a manometer for about $5 worth of tubing and connected it to the dipstick tube - see the bottom half of this article:

    https://www.audiworld.com/tech/eng116.shtml

    Drive around...
  15. I did enjoy that video. I did as you asked and...

    I did enjoy that video. I did as you asked and went to OBD-II and poked around - no codes. Looked at Mode-9 but it just shows some info.

    Then went to Engine, Measuring blocks, and monitored both...
  16. Again, VCDS noobie - what is "Number 9" ? How do...

    Again, VCDS noobie - what is "Number 9" ? How do I reset the DTCs? What the f are "trim values"? Inquiring minds need a tiny bit of help to get this info :-)
  17. OK - made a mistake - I did change the battery to...

    OK - made a mistake - I did change the battery to a new Bosch battery as I was getting "low voltage" when I scanned. Here is latest VCDS scan (which includes complaints on voltage):

    ...
  18. 2006 Audi - engine stumbles and hunts after ECU replacement, getting worse, no errors

    2006 Audi A6 Quattro Avant History

    tldr; Changed ECU a year ago, since then engine oscillates on and off at a slow steady speed, gotten really bad on cold start.

    Had a two-year plus problem...
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    Jack, I drove my wife's car the other day -...

    Jack,

    I drove my wife's car the other day - its been code free since the ECU swap - but I did notice a difference. When I give the throttle a tiny bit of pressure - so the engine is not idling but...
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    My saga is finally over :) ...

    My saga is finally over :)

    https://www.dropbox.com/s/4zp0jlwm9qe8hhh/IMG_2654.JPG?raw=1
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    The car finally got to readiness today - 0000...

    The car finally got to readiness today - 0000 0000 :o There are a few faults - the ABS showed an error when I first ran the car with the replacement ECU, but then extinguished after a min of...
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    I took a video of the new unit this morning...

    I took a video of the new unit this morning running the 071 test. Here are the two videos:

    Original ECU:
    https://www.dropbox.com/s/piqusm9ekaxn46j/Original.MOV?dl=0
    Watch how the REED switch...
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    UPDATE: sent Jack the original and recycler ECU,...

    UPDATE: sent Jack the original and recycler ECU, he recoded the latter from the former, and sent me the recycler unit to install in my car. As part of the recoding he has to pop the cover of both...
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    Filled out the FORM on Jack's business site and...

    Filled out the FORM on Jack's business site and shipping him my ECU along with a unit I got from a recycler in PA - he'll transfer settings and send me them back. Also getting a second unit from a...
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    Just ordered an ECU from Philadelphia - will be...

    Just ordered an ECU from Philadelphia - will be here tomorrow PM. Now I'm wondering - if replace that, maybe should replace the LDP - just in case it has an internal deficiency (think shorted wires)...
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