2007 jetta wolfs 5mt us/nar - slow/delayed rpm drop when shifting or coasting

   #1  

D-Dub

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This is for now just a general question, my sister bought this car new, so it has been in the family since then.

As far as I remember, the car has always done this, so I simply accepted as normal behavior.

It is not really a problem, it's just always been more a curiosity and less a minor annoyance.

Anyway, 2.5L 5MT with lots of miles.

When shifting, or even revving up the engine a bit, then letting of of the throttle, the engine seems to have a slight delay in dropping RPM's.

Its only like half a second or so, and I always assumed it was some kind of shift assist, to keep the rpms from dropping too fast while shift.

But its also quite noticeable when coasting. The car will coast for that half second or so, before the engine breaking starts to occur and you can feel the engine drag slow the vehicle.


My main question, is this considered normal behavior, or a symptom of something not quite right but not throwing any errors, like throttle body alignment, weak throttle return spring, or some other related throttle/rpm situation?

Secondary question, if it is normal, is there a way to disable that functionality (either vcds or some other physical modification) ?

I know, autoscan;


Code:
Wednesday,12,September,2018,20:27:11:03587
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x86
VCDS Version: 18.2.1.2  HEX-NET CB: 0.4411.4
Data version: 20180518 DS287.1
www.Ross-Tech.com


VIN: 3VWEF71K87M169975   License Plate: 


Chassis Type: 1K (1K0)
Scan: 01 03 08 09 15 16 17 19 25 42 44 46 52 56 62 65 72

VIN: 3VWEF71K87M169975   Mileage: 294090km-182739miles

00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
25-Immobilizer -- Status: OK 0000
42-Door Elect, Driver -- Status: Malfunction 0010
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: Malfunction 0010
56-Radio -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
65-Tire Pressure -- Status: Not registered 0011
72-Door, Rear Right -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 06A-906-032-BGP.lbl
   Part No SW: 07K 906 032 T    HW: 07K 906 032 Q
   Component: 2.5l R5/4V      G   9653  
   Revision: --H01---    Serial number: VWZ7Z0G9063400
   Coding: 0000001
   Shop #: WSC 00066 000 00000
   VCID: 3A38F72975519A9429-806E

No fault code found.
Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 1K0-907-379-MK60-F.lbl
   Part No SW: 1K0 907 379 AC    HW: 1K0 907 379 AC
   Component: ESP FRONT MK60      0101  
   Revision: 00H11001    
   Coding: 0021122
   Shop #: WSC 00066 000 00000
   VCID: 73A61A0D12BB2BDC2A-8026

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 1K0-820-047.lbl
   Part No SW: 1K0 820 047 JT    HW: 1K0 820 047 JT
   Component: Climatic PQ35   143 1515  
   Revision: 00143034    Serial number: 00000000000000
   Shop #: WSC 00000 000 00000
   VCID: 7F4EC63D2EF37FBC5E-802A

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels:. 3C0-937-049-23-M.lbl
   Part No SW: 3C0 937 049 AD    HW: 3C0 937 049 AD
   Component: Bordnetz-SG     H52 2002  
   Revision: 00H52000    Serial number: 00000000611882
   Coding: A4058E234004150007140000001400000009730B5C0000
   Shop #: WSC 00000 000 00000
   VCID: 6B96026D4A8BF31CE2-803E

   Subsystem 1 - Part No: 1K1 955 119 E  Labels: 1KX-955-119.CLB
   Component: Wischer 210407 020  0501  
   Coding: 00000005
   Shop #: WSC 00000  

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 1K0-909-605.lbl
   Part No SW: 1K0 909 605 AB    HW: 1K0 909 605 AB
   Component: 6A AIRBAG VW8R  034 8000  
   Revision: 05034000    Serial number: 003B6M01GN0$  
   Coding: 0013889
   Shop #: WSC 00066 000 00000
   VCID: 6C9401714F85F424EB-8038

   Subsystem 1 - Part No: 1K0 959 339 F
   Component: BF-Gewichtsens. 007 0005

   Subsystem 2 - Serial number: 6332MSME16766E22F

   Subsystem 3 - Serial number: 6342MSME10441C04+

   Subsystem 4 - Serial number: 6351HSME0D0A4023%

   Subsystem 5 - Serial number: 6361HSME0D11112D0

   Subsystem 6 - Serial number: 63727SME0C285B457

   Subsystem 7 - Serial number: 63827SME0C561761%

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 1K0-953-549-MY8.lbl
   Part No SW: 1K0 953 549 AP    HW: 1K0 953 549 AP
   Component: Lenksäulenmodul 036 0070  
   Coding: 0000021
   Shop #: WSC 00066 000 00000
   VCID: 004C45C1530D004427-8054

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 1K0-920-xxx-17.lbl
   Part No SW: 1K0 920 953 P    HW: 1K0 920 953 P
   Component: KOMBIINSTRUMENT 3HL 1610  
   Revision: V0003000    Serial number: VWZ7Z0G9063400
   Coding: 0021407
   Shop #: WSC 00066 000 00000
   VCID: 383CED214B5D8884DF-806C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels:. 1K0-907-530-V2.clb
   Part No SW: 1K0 907 530 K    HW: 1K0 907 951 
   Component: J533__Gateway   H04 0021  
   Revision:   H04 02    Serial number: 230307F1001947
   Coding: 3D3F034007001002
   Shop #: WSC 00066 000 00000
   VCID: 2F2ED67DBE134F3C8E-807A

1 Fault Found:
01044 - Control Module Incorrectly Coded 
            000 -  - 
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 1
                    Fault Frequency: 254
                    Reset counter: 255
                    Mileage: 285387 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 14:01:42


-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
   Part No SW: 1K0 920 953 P    HW: 1K0 920 953 P
   Component: IMMO            3HL 1610  
   Revision: V0003000    Serial number: VWZ7Z0G9063400
   Shop #: WSC 00000 000 00000
   VCID: 383CED214B5D8884DF-806C

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels:. 1K0-959-701-MIN3.clb
   Part No SW: 1K0 959 701 P    HW: 1K0 959 793 L
   Component: J386  TUER-SG FT    1133  
   Revision: 32008001    Serial number: 00000538578330
   Coding: 0001205
   Shop #: WSC 00066 000 00000
   VCID: 3B36F22D7A6BA39C32-806E

2 Faults Found:
01552 - Motor for Central Locking; Drivers Door (V56); Lock 
            012 - Electrical Fault in Circuit - Intermittent
             Freeze Frame:
                    Fault Status: 00101100
                    Fault Priority: 3
                    Fault Frequency: 254
                    Reset counter: 226
                    Mileage: 219133 km
                    Time Indication: 0

00928 - Locking Module for Central Locking; Front Driver Side (F220) 
            008 - Implausible Signal - Intermittent
             Freeze Frame:
                    Fault Status: 00101000
                    Fault Priority: 3
                    Fault Frequency: 254
                    Reset counter: 226
                    Mileage: 219139 km
                    Time Indication: 0


-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1Kx-909-144-G2V3.clb
   Part No: 1K1 909 144 L
   Component: EPS_ZFLS Kl.069 H07 1806  
   Shop #: WSC 00066 000 00000
   VCID: 3424D91157356CE4F3-8060

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels:. 1K0-959-433-MAX.clb
   Part No SW: 1K0 959 433 CT    HW: 1K0 959 433 CT
   Component:    KSG PQ35 RDK 052 0218  
   Revision: 00052000    Serial number: 00000000000000
   Coding: 13900F880186083F3904058FB0880F0488DCA0
   Shop #: WSC 00066 123 12345
   VCID: 044449D147151C6403-8050

   Subsystem 1 - Component:   Sounder n.mounted     

   Subsystem 2 - Component:       NGS n.mounted     

   Subsystem 3 - Component:      IRUE n.mounted     

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels:. 1K0-959-702-MIN3.clb
   Part No SW: 1K0 959 702 P    HW: 1K0 959 792 L
   Component: J387  TUER-SG BT    1133  
   Revision: 32008001    Serial number: 00000025878327
   Coding: 0001204
   Shop #: WSC 00066 000 00000
   VCID: 3C34F1317F65A4A43B-8068

3 Faults Found:
01553 - Motor for Central Locking; Passenger Door (V57); Lock 
            012 - Electrical Fault in Circuit - Intermittent
             Freeze Frame:
                    Fault Status: 00101100
                    Fault Priority: 3
                    Fault Frequency: 254
                    Reset counter: 226
                    Mileage: 0 km
                    Time Indication: 0

00929 - Locking Module for Central Locking; Front Passenger Side (F221) 
            008 - Implausible Signal
             Freeze Frame:
                    Fault Status: 01111000
                    Fault Priority: 3
                    Fault Frequency: 254
                    Reset counter: 186
                    Mileage: 230159 km
                    Time Indication: 0

00110 - Right Mirror Turn Signal Lamp (L132) 
            012 - Electrical Fault in Circuit
             Freeze Frame:
                    Fault Status: 01101100
                    Fault Priority: 5
                    Fault Frequency: 254
                    Reset counter: 186
                    Mileage: 202033 km
                    Time Indication: 0


-------------------------------------------------------------------------------
Address 56: Radio        Labels: 1K0-035-161.lbl
   Part No SW: 1K0 035 161 D    HW: 1K0 035 161 D
   Component: Radio DE2       020 0023  
   Revision: 00020000    Serial number: VWZ4Z7K6494339
   Coding: 0010401
   Shop #: WSC 24171 444 04877
   VCID: 200C2541F3CDE04407-8074

1 Fault Found:
00856 - Radio Antenna 
            011 - Open Circuit

-------------------------------------------------------------------------------
Address 62: Door, Rear Left        Labels:. 1K0-959-703-GEN3.clb
   Part No SW: 1K0 959 703 Q    HW: 1K0 959 795 J
   Component: J388   TUER-SG HL   1120  
   Revision: 12006001    Serial number: 00000001316425
   Coding: 0001168
   Shop #: WSC 00066 000 00000
   VCID: 3E30FB396979B6B415-806A

No fault code found.

-------------------------------------------------------------------------------
Address 65: Tire Pressure        Labels: 3C0-959-433-65.lbl
   Part No SW: 1K0 959 433 CT    HW: 1K0 959 433 CT
   Component:    RDK              0440  
   Revision: 00052000    Serial number: 00000000000000
   Coding: 0100101
   Shop #: WSC 00066 000 00000
   VCID: 044449D147151C6403-8050

1 Fault Found:
01521 - Sensor for Tire Pressure 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01110100
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 252
                    Mileage: 257601 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 19:00:07


-------------------------------------------------------------------------------
Address 72: Door, Rear Right        Labels:. 1K0-959-704-GEN3.clb
   Part No SW: 1K0 959 704 Q    HW: 1K0 959 794 J
   Component: J389   TUER-SG HR   1120  
   Revision: 12006001    Serial number: 00000001303467
   Coding: 0001168
   Shop #: WSC 00066 000 00000
   VCID: 3FCE863D6E73BFBC1E-806A

No fault code found.

End----------(Elapsed Time: 01:23, VBatt start/end: 14.0V/14.2V)-----------
 
   #2  

PetrolDave

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When shifting, or even revving up the engine a bit, then letting of of the throttle, the engine seems to have a slight delay in dropping RPM's.
I've experienced this on many cars, and have always been told it's a deliberate "feature" in the engine management to reduce emissions as well as helping shifts.

I would class this as normal behaviour, if slightly annoying.
 
   #3  

DrPeter

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I've experienced this on many cars, and have always been told it's a deliberate "feature" in the engine management to reduce emissions as well as helping shifts.

I would class this as normal behaviour, if slightly annoying.



I have heard and felt the same thing too, and I agree, it is annoying.

Also there is appears to be a similar 'emissions reducing' strategy when decelerating, the ECM holds the throttle plate open a little, I would imagine to reduce any hydrocarbons and to lower manifold vacuum.

Agree, it is annoying.

drpeter
 
Last edited:
   #6  

D-Dub

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VCDS Serial number
C?ID=272151
Hi Jack, thanks for the input!

This particular behavior on this vehicle has been around since before I can remember. It was my sisters, and I bought it a few years ago.

It's not my primary vehicle, but I try to drive it at least once a week (4-6 times a month).

The valve cover/pcv was replaced earlier this year actually, I had to get it done to pass inspection (CEL).

So, unless it was messed up before, and since the valve cover/pcv replacement, then I would hope that is not it still causing a problem.
 
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