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  1. 10-20-2013 05:30 PM #1
    BlazinB5
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    Automatic Transmission jerks when it downshifts from 5th to 4th

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    ever since i got the car, i noticed that after you drive for like 20 minutes, the transmission will jerk one time when you're slowing down and coming from 5th to 4th, and sometimes has a slight pause then a jerk when it shifts from 4th to 5th - but that's kind of rare. another thing i noticed is that when i drive the car past 4,000 RPM's, it starts jerking sooner - so i'm guessing that something's probably wore out since the previous owner never changed the fluid (it was pitch black and came out like water) after 180,000 miles.

    i planned on doing a manual swap eventually, but just not this soon - so i kind of wanna see if this problem is fixable since i don't feel like going through the trouble of doing the swap just yet. between school and work right now, i just don't have the time for doing a swap. so yea, thanks in advance for anyone that knows how to fix this.
    2001 Allroad 2.7T
    2000 A6 4.2 (parted out)
    2003 A4 1.8T (sold)
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  2. 10-20-2013 08:24 PM #2
    gimmemoedmb
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    You should be able to find more by searching...but I think I had the same problem as you and it was the N91 solenoid. Whenever I would slow down I had a pretty violent jerk. After a bunch of searching I figured it was the N91 solenoid and that fixed my problem. You have to remove the tranny fluid pan but it was a relatively easy fix. It's been running great ever since I replaced that.
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  3. 10-20-2013 08:37 PM #3
    gimmemoedmb
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    http://www.audizine.com/forum/showth...ard-down-shift
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  4. 10-22-2013 09:38 AM #4
    BlazinB5
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    Hmmmmm.. i'm almost tempted to pull the trigger on a manual swap. I would really hate to change the n91 and then have it end up being the valve body, but it does sound like the n91. Such a tough call since i really wanna do the swap, but dont have the time to. I'll end up having to pay my mechanic to do it $60/hour. Of course i would source all of the parts for him to keep the cost down.



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    2001 Allroad 2.7T
    2000 A6 4.2 (parted out)
    2003 A4 1.8T (sold)
    2002 A4 1.8T (sold)
    2001 A4 1.8T (sold)
    2001 A4 2.8 (sold)
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  5. 10-22-2013 10:01 AM #5
    mauromj
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    Quote Originally Posted by BlazinB5 View Post
    Hmmmmm.. i'm almost tempted to pull the trigger on a manual swap. I would really hate to change the n91 and then have it end up being the valve body, but it does sound like the n91. Such a tough call since i really wanna do the swap, but dont have the time to. I'll end up having to pay my mechanic to do it $60/hour. Of course i would source all of the parts for him to keep the cost down.



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    I'm having the same problem and am debating a manual swap to. I found a valve body on eBay for ~$150 but it arrived damaged so I'm out of luck right now.
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  6. 10-23-2013 08:02 PM #6
    BlazinB5
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    hmmm, i think i'm very tempted to just do a manual swap. anyone wanna convince me not to?
    2001 Allroad 2.7T
    2000 A6 4.2 (parted out)
    2003 A4 1.8T (sold)
    2002 A4 1.8T (sold)
    2001 A4 1.8T (sold)
    2001 A4 2.8 (sold)
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  7. 10-24-2013 06:36 PM #7
    RDA990
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    Quote Originally Posted by BlazinB5 View Post
    hmmm, i think i'm very tempted to just do a manual swap. anyone wanna convince me not to?
    Nope go right ahead. I am too tempted to do a swap, but my tranny is pretty healthy now so it can definitely wait. Let me know some of the prices you find on the tranny + other parts.
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  8. 10-31-2013 12:14 PM #8
    BlazinB5
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    has anyone else found the N91 solenoid to be the culprit? i've been extremely busy lately, so i haven't really had the time to figure out what i want to do yet.
    2001 Allroad 2.7T
    2000 A6 4.2 (parted out)
    2003 A4 1.8T (sold)
    2002 A4 1.8T (sold)
    2001 A4 1.8T (sold)
    2001 A4 2.8 (sold)
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  9. 10-31-2013 12:54 PM #9
    walky_talky20
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    Swap that pig. It can be done cheaply. My swap cost me $100. Link in sig.
    ^Don't listen to this guy, he's not even a mechanic.
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  10. 11-02-2013 07:07 AM #10
    BlazinB5
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    --
    Last edited by BlazinB5; 11-24-2013 at 04:23 PM.
    2001 Allroad 2.7T
    2000 A6 4.2 (parted out)
    2003 A4 1.8T (sold)
    2002 A4 1.8T (sold)
    2001 A4 1.8T (sold)
    2001 A4 2.8 (sold)
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  12. 03-09-2014 08:25 PM #11
    BlazinB5
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    so it looks like i'm going to give the car to my wife since the N91 solenoid isn't that big of a deal, but at the same time, I'm looking to order up the part and get this finally done. I'm not overly swamped with work/college at the moment, so I'm going to order up the part now. is this the right piece? the link says it will work with the 5HP19, 5HP19FL, 5HP19FLA, so i'm 99% sure this is what I need to get. any help is definitely appreciated.

    http://www.thectsc.com/products/pres...id-194-12.html
    2001 Allroad 2.7T
    2000 A6 4.2 (parted out)
    2003 A4 1.8T (sold)
    2002 A4 1.8T (sold)
    2001 A4 1.8T (sold)
    2001 A4 2.8 (sold)
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  13. 03-09-2014 08:33 PM #12
    Samsonite
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    ^Soo, according to your post and then your sig you have a wife and a girlfriend!?
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  14. 03-09-2014 08:36 PM #13
    customa4
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  15. 03-09-2014 08:45 PM #14
    BlazinB5
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    Quote Originally Posted by pAid4 View Post
    ^Soo, according to your post and then your sig you have a wife and a girlfriend!?
    what can a guy say.. one piece of ass just isn't enough.. haha i completely forgot to update my sig.
    2001 Allroad 2.7T
    2000 A6 4.2 (parted out)
    2003 A4 1.8T (sold)
    2002 A4 1.8T (sold)
    2001 A4 1.8T (sold)
    2001 A4 2.8 (sold)
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  16. 03-09-2014 09:20 PM #15
    customa4
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    Congrats and sorry the two of us didn't contribute to your problem at all, just couldn't resist haha
    K&N-Milltek HFC-Magnaflow Catback-APR snub mount-ER Sport FMIC-Forge TIP-Forge DV-Podi-034 Motor Mounts-034 Rear Sway/End Links-STaSIS Street Sport Coils-Bentley Manual
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  17. 07-22-2014 03:26 PM #16
    BlazinB5
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    for anyone else that is having this issue, changing out the N91 fixed the problem
    2001 Allroad 2.7T
    2000 A6 4.2 (parted out)
    2003 A4 1.8T (sold)
    2002 A4 1.8T (sold)
    2001 A4 1.8T (sold)
    2001 A4 2.8 (sold)
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