Acceleration Hesitation From Stop (stock, no tune)

[Blockis]

Howdy.

I've noticed that randomly when driving if I come to a complete stop, and then do a moderately-hard pull, the car will hesitate for a few seconds, and then lurch forward and accelerate. No thunking or any out of the ordinary sounds. It just feels like I'm stalled while I see the RPMs rise for a few seconds and then it accelerates as I expect.

The car is stock, automatic, no tune, no CEL, HPFP was replaced ~35k miles ago by previous owner, fuel filter ~20k mi by previous owner. I had a random misfire on a cold start a few months ago, checked the plugs and they weren't fouled... Replaced the plugs (PFR7S8E) and coil packs (07K905715G) anyways and have not had any misfires since, but still experience the hesitation every once in a while.

I've had the car for about 10k miles now, but have not checked the cam follower; searching the other threads with similar problems, it seems like it could be a culprit, but I'm also curious if there are other things that I should also keep in mind as I look around.

EDIT: Most likely the torque converter, makes the most sense.

[007J]

Is it basically just getting rolling with 1st then immediately shifting to 2nd? Or slow to get moving with just 1st?

[esandes]

No codes?

[Blockis]

1. Slow to get moving in 1st.
2. No codes, will add the VCDS logs when I get to the computer. (That’s the weirdest part, I would’ve guessed something would’ve been triggered)

[esandes]

Seems kind of like a massive heat soak if you don't have codes. Maybe try wand washing your radiator and side intercoolers.

[Blockis]

Here's the codes:

Saturday,30,July,2022,20:25:08:51999
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 22.3.1.4 (x64)
Data version: 20220407 DS337.0
www.Ross-Tech.com


VIN: WAUDF78E47A117834 License Plate: PAUDI
Mileage: 210630km-130879mi Repair Order:



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: 8E (8E - Audi A4/S4/RS4 B6/B7 (2001 > 2008))
Scan: 01 02 03 08 09 0F 11 15 16 17 18 25 36 37 45 46 55 56 57 65
67 69 75 76 77

VIN: WAUDF78E47A117834 Mileage: 210630km-130879miles
-------------------------------------------------------------------------------
Address 01: Engine Labels:. 06F-907-115-AXX.clb
Part No SW: 8E0 910 115 P HW: 8E0 907 115 D
Component: 2.0l R4/4V TFSI 0020
Revision: 5EH14--- Serial number:
Coding: 0104010A190F0120
Shop #: WSC 01117 444 54512
VCID: 2E532D03B9DC5AFF6D-807A
VINID: 9D1954587215107441047203105EEB2579

No fault code found.
Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 09L-927-760.lbl
Part No SW: 8E1 910 156 K HW: 09L 927 156 B
Component: AG6 09L 2,0TFSI USA 0040
Revision: --H01--- Serial number: 4242249
Coding: 0000002
Shop #: WSC 06325 000 00000
VCID: 2F6D3007BED653F766-807A

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 8E0-910-517.clb
Part No SW: 8E0 910 517 J HW: 8E0 614 517 BH
Component: ESP8 quattro H06 0140
Revision: 00000000 Serial number: 00000000000000
Coding: 0004528
Shop #: WSC 06325 000 00000
VCID: 2E532D03B9DC5AFF6D-807A

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8E0-820-043.lbl
Part No: 8E0 820 043 BM
Component: A4 Klimaautomat 2833
Coding: 00000
Shop #: WSC 00000
VCID: 6DD1EA0F275AE1E714-5106

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 8E0-907-279-8EC.lbl
Part No: 8E0 907 279 N
Component: int. Lastmodul USA 0907
Coding: 00003
Shop #: WSC 06325
VCID: 3D711A4F37BAB167E4-4B00

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8E0-959-655-94.lbl
Part No SW: 8E0 959 655 H HW: 8E0 959 655 H
Component: Airbag 9.41 H12 3840
Revision: 91H12384 Serial number: 0036N0G0G19V
Coding: 0032607
Shop #: WSC 06325 000 00000
VCID: 3C77174B7FA0B86FD3-8068

Subsystem 1 - Part No: 8E0 910 339 B
Component: BF-Gewichtsens. 002 0070

Subsystem 2 - Serial number: 3CAUC

Subsystem 3 - Serial number: 0001.01.000000200000000000ÿ†63

Subsystem 4 - Serial number: 000000ÿ†6332DRB4040C8E26Tÿ†63

Subsystem 5 - Serial number: C8E26Tÿ†6342DRB403E31526Iÿ†63

Subsystem 6 - Serial number: 31526Iÿ†6352ARB401B76B3DYÿ†63

Subsystem 7 - Serial number: 76B3DYÿ†6362ARB401B77156Lÿ†63

Subsystem 8 - Serial number: 77156Lÿ†63729RB401B9A5A1Uÿ†63

Subsystem 9 - Serial number: 9A5A1Uÿ†63829RB401B9A53AXÿ

Subsystem 10 - Serial number: 9A53AXÿ

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 8E0-953-549.lbl
Part No: 8E0 953 549 Q
Component: Lenksáulenmodul 0701
Coding: 02021
Shop #: WSC 06325
VCID: 418966BF4B42D58780-4B1A

1 Fault Found:
01304 - Radio
49-00 - No Communications

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8E0-920-9xx-8EC.lbl
Part No SW: 8E0 920 951 G HW: 8E0 920 951 G
Component: KOMBI+WFS 4 H14 0120
Revision: 0120 Serial number: 00000000000000
Coding: 0023261
Shop #: WSC 00999 444 64523
VCID: 2E532D03BADC5AFF6D-5140

1 Fault Found:
01304 - Radio
004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 25: Immobilizer Labels: 8E0-920-9xx-8EC.lbl
Part No SW: 8E0 920 951 G HW: 8E0 920 951 G
Component: KOMBI+WFS 4 H14 0120
Revision: 0120 Serial number: 00000000000000
Coding: 0023261
Shop #: WSC 00999 444 64523
VCID: 2E532D03BADC5AFF6D-5140

1 Fault Found:
01304 - Radio
004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 46: Central Conv. Labels:. 8E0-959-433-MAX.clb
Part No: 8E0 959 433 CG
Component: Komfortgerát T7B 4135
Coding: 11820
Shop #: WSC 06325
VCID: 78FFCB5B5818544FF7-4B1A

Subsystem 1 - Part No: 8E1959801G
Component: Tõrsteuer.FS BRM 0706

Subsystem 2 - Part No: 8E1959802G
Component: Tõrsteuer.BF BRM 0706

Subsystem 3 - Part No: 8E0959801E
Component: Tõrsteuer.HL BRM 0606

Subsystem 4 - Part No: 8E0959802E
Component: Tõrsteuer.HR BRM 0606

No fault code found.

End-------------------------(Elapsed Time: 06:23)--------------------------

Can ignore the Radio-related one, as I put in a Sony headunit, but that's the only code that I've got lol.

[Theiceman]

Is it automatic ??
If you see the revs rising but car isn't a acelerating the torque converter is not hooking up.

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[Blockis]

Ahh shit, you know what... yes, it is. I remember last winter I was seeing some RPM surging (most noticeably after cold start and using cruise control to monitor)...

I think you're right. And I remember searching the forum on the TC and how sometimes even replacing it doesn't solve the problem lol. Just something to live with I guess

[Jayz691]

Thats a little different issue. That "hunting" when the revs will "bounce" 100-200 rpms while cruising, on light throttle. Trans service can help sometimes, did with mine, but still does it a little when really cold. A new/rebuilt TC will fix that issue. I'm installing a Vast TC while my engine is out, should hold up much better. But your issue sounds very different.

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