Golf GT TDI 2.0 Crank, no start issue

[jamesh89]

Hi guys,

Hoping someone can help with this head scratcher! Golf has suddenly decided it doesn't want to start. I drove to the shops the other day and on return to the car, it was just cranking but not starting. After 3 or 4 mins I managed to get it started and got home without issue but it wouldn't start after parking up. In the evening, I managed to get it started first time and drove away, only for the car to judder and splutter to a halt 100yds down the road. Again, it cranked but would not start. After another 5 mins trying, i managed to get it started (with the throttle fully pressed down) and whizzed back home.

Since then, I've barely been able to get it started. It now only cranks, and on the rare occasions it does fire up, it cuts out after 2 or 3 seconds.

I've done a full scan with VCDS and did have a fault for engine speed sensor (G28). I cleared this fault and it hasn't flagged back up so i'm wondering if that was potentially a symptom of something else? I've got the part on order but any other suggestions in the meantime would be much appreciated! The tachometer was initially moving when trying to start but barely moves now.

Other points:

• The fuel pump is priming and fuel is reaching the filter at least
• I've tried both keys (in-case immobiliser issue)
• Inspected Cam belt and don't see any damage/missing teeth
• Battery 6 months old and fully charged

VCDS log below - ABS and steering angle faults due to me unplugging battery so not concerned about them

Thursday,29,December,2016,20:20:22:12017

VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64

VCDS Version: 16.8.4.2 (x64)

Data version: 20161129 DS267.0

Ross-Tech: Home

Mileage: 222340km-138155miles

00-Steering Angle Sensor -- Status: OK 0000

01-Engine -- Status: Malfunction 0010

03-ABS Brakes -- Status: Malfunction 0010

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: OK 0000

25-Immobilizer -- Status: OK 0000

42-Door Elect, Driver -- Status: OK 0000

44-Steering Assist -- Status: Malfunction 0010

46-Central Conv. -- Status: Malfunction 0010

52-Door Elect, Pass. -- Status: OK 0000

56-Radio -- Status: OK 0000

7D-Aux. Heat -- Status: Malfunction 0010

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

Address 01: Engine Labels: 03G-906-016-BKD.lbl

Part No SW: 03G 906 016 KC HW:

Component: R4 2,0L EDC G000SG 9971

Revision: 12345678 Serial number: VWZ7Z0D0054531

Coding: 0000072

Shop #: WSC 00478 210 91483

VCID: 6EFD374479B9F4322B-803A

1 Fault Found:

16705 - Engine Speed Sensor (G28)

P0321 - 000 - Implausible Signal

Freeze Frame:

RPM: 0 /min

Torque: 258.0 Nm

Speed: 0.0 km/h

Load: 0.0 %

Voltage: 11.32 V

Bin. Bits: 00101000

Idle Stabilization: 0.0∞KW

RPM: 42 /min

Readiness: 0 0 1 1 1

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

Address 03: ABS Brakes Labels: 1K0-907-379-MK60-F.lbl

Part No: 1K0 907 379 K

Component: ESP FRONT MK60 0103

Coding: 0023170

Shop #: WSC 00046 000 540672

VCID: 3A55CB1475716892C7-806E

1 Fault Found:

01314 - Engine Control Module

013 - Check DTC Memory - Intermittent

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

Address 08: Auto HVAC Labels: 1K0-907-044.lbl

Part No: 1K0 907 044 AB

Component: ClimatronicPQ35 066 0404

Shop #: WSC 00000 000 00000

VCID: 67F342605643257A68-8032

No fault code found.

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

Address 09: Cent. Elect. Labels: 3C0-937-049-23-H.lbl

Part No SW: 1K0 937 049 T HW: 1K0 937 049 T*

Component: Bordnetz-SG 1.0 H30 0704

Revision: 00030000 Serial number: 00000000733068

Coding: E5890F0600041800001400001400000000

Shop #: WSC 00046 412 1548288

VCID: 40A1B9FC13AD324289-8014

Subsystem 1 - Part No: 1K2 955 119 B Labels: 1KX-955-119.CLB

Component: Wischer VW350 012 0401

Coding: 00065493

Shop #: WSC 00046

Subsystem 2 - Part No: 1K0 955 559 M Labels: 1K0-955-559-AF.CLB

Component: RegenLichtSens 005 0605

Coding: 00217125

Shop #: WSC 00046

No fault code found.

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

Address 15: Airbags Labels: 1K0-909-605.lbl

Part No SW: 1K0 909 605 D HW: 1K0 909 605 D

Component: 02 AIRBAG VW8 022 0600

Revision: 05022000 Serial number: 0033JD0EZ2EH

Coding: 0012338

Shop #: WSC 00046 412 00000

VCID: 2D7FF048B43FCF2A52-8078

Subsystem 1 - Serial number: 6332MSME48056003

Subsystem 2 - Serial number: 6342MSME49310504

Subsystem 3 - Serial number: 6351HSME33035C02

Subsystem 4 - Serial number: 6361HSME57177702

No fault code found.

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

Address 16: Steering wheel Labels: 1K0-953-549-MY8.lbl

Part No SW: 1K0 953 549 A HW: 1K0 953 549 A

Component: Lenks‰ulenmodul 012 0030

Coding: 0000042

Shop #: WSC 00046 000 180189

VCID: 3041E93CA30DA2C279-8064

No fault code found.

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

Address 17: Instruments Labels: 1K0-920-xxx-17.lbl

Part No: 1K0 920 961 B

Component: KOMBIINSTRUMENT VDD 0814

Coding: 0000403

Shop #: WSC 00478 210 181999

VCID: 2977045880D7D30ABE-807C

No fault code found.

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

Address 19: CAN Gateway Labels: 1K0-907-530-V1.clb

Part No SW: 1K0 907 530 E HW: 1K0 907 951

Component: Gateway H09 0110

Revision: 09 Serial number: 27001046020110

Coding: 3D0F0B40070001

Shop #: WSC 00046 412 1957888

VCID: 2977045880D7D30ABE-807C

No fault code found.

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

Address 25: Immobilizer Labels: 1K0-920-xxx-25.clb

Part No: 1K0 920 961 B

Component: IMMO VDD 0814

Shop #: WSC 00000 000 00000

VCID: 2977045880D7D30ABE-807C

No fault code found.

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

Address 42: Door Elect, Driver Labels: 1K0-959-701-MAX2.lbl

Part No: 1K0 959 701 L

Component: Tuer-SG 024 2470

Coding: 0000564

Shop #: WSC 00478 210 91483

VCID: 3753D220466375FA38-8062

No fault code found.

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

Address 44: Steering Assist Labels: 1Kx-909-14x-44.clb

Part No: 1K2 909 144 G

Component: EPS_ZFLS Kl.2 1301

Shop #: WSC 00000 000 00000

VCID: 3041E93CA30DA2C279-8064

1 Fault Found:

00778 - Steering Angle Sensor (G85)

000 - -

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

Address 46: Central Conv. Labels: 1K0-959-433-MIN.clb

Part No: 1K0 959 433 BK

Component: 01 KSG 0301

Coding: 80F802087F2D8505485AC69010

Shop #: WSC 00046 123 12345

VCID: 7AD50B1435F1A89287-802E

Subsystem 1 - Part No: 1K0 951 605 A

Component: LIN BACKUP HORN H01 1201

Subsystem 2 - Part No: 1K0 907 719

Component: Neigungssensor 003 0003

Subsystem 3 - Part No: 1K0 951 177

Component: Innenraumueberw.004 0101

1 Fault Found:

01134 - Alarm Horn (H12)

004 - No Signal/Communication

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

Address 52: Door Elect, Pass. Labels: 1K0-959-702-MIN1.lbl

Part No: 1K0 959 702 E

Component: Tuersteuergeraet 09 0156

Coding: 0000052

Shop #: WSC 00046 412 154828

VCID: 3147EC38A807ABCA76-8064

No fault code found.

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

Address 56: Radio Labels: 1K0-035-1xx-56.lbl

Part No: 1K0 035 186 J

Component: Radio GR0 0014

Revision: 0001002S Serial number: VWZ2Z2D2000758

Coding: 0040402

Shop #: WSC 00046 412 00000

VCID: 2D7FF048B43FCF2A52-8078

No fault code found.

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

Address 7D: Aux. Heat Labels: 1K0-963-235.lbl

Part No SW: 1K0 963 235 D HW: 1K0 963 235 D

Component: PTC-Element 0404

Revision: 00700000 Serial number:

Shop #: WSC 00000 000 00000

VCID: 2C79FD4C8F25C62245-8078

1 Fault Found:

00361 - Heater Element for Auxiliary Heater (Z35)

014 - Defective

End-------------------------(Elapsed Time: 01:03)--------------------------

[FLAPPERJACK76]

Looks like a faulty crank sensor. Really crap to change. Recommend paying some poor bugger to change it. Have seen a few with wiring faults where the wiring has rubbed through around the gearbox. Wouldn't recommend fitting a cheap sensor either.

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[jamesh89]

Thanks for the reply! Now pretty certain it is the sensor - registering no engine speed on cranking when monitoring with VCDS - also now showing MIL on for the sensor in the error log.

Is it many hours work for a garage to change? I only need the car for another month before travelling for 6 months so i'm trying to avoid any big expenses as want to change her when i get back

Thanks again

[FLAPPERJACK76]

Best way to change it is remove the charge air pipe and oil filter /oil cooler housing. Then access is reasonable. I reckon 2 or 3 hour's labour.

Sent from my SM-G900F using Tapatalk

[jamesh89]

Thanks for the advice, much appreciated! Will post the solution when I get it fixed!

[jamesh89]

So after 4 weeks and a lot of money spent - i'm still no where closer and would really appreciate any further suggestions! Here is what I have done so far with no joy

-New Crank sensor
-New Cam sensor
-Tested Replacement ECU
-Replacement fuel filter
-Removed injector wiring loom, cleaned and checked for continuity at all points

Fuel pump is definitely priming and reaching the filter - could a tandem pump fault cause a no start? The engine feels like it almost catches but not quite.

Thanks in advance!

[FLAPPERJACK76]

I would of stopped after the new crank sensor. Any new fault code's? It's always hard to diagnose faults like this over the Internet. Could be broken wiring in the loom from g28. Pin 1 should be live to the sensor pin 3 is earth pin 2 is sensor voltage back to the ecu. Ideally check these at the ecu plugs and for continuity from the pin side back to the g28 plug. You don't want any more than 9 ohms in any of the wires. Another thing it could be is an injector. If one goes down it won't start. I would take the cover off and check resistance at the terminals of each injector and then check from each terminal individuly to the body of the injector if you get a reading here then you have found it. ...or an easier way to rule them out is disconnect no1 injector wiring plug at the injector then try and start it. ..if no joy then connect no1 back up and disconnect no2 injector no joy then re connect and repeat process for no3 and no4 .

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[jamesh89]

Unfortunately, I failed with the crank sensor job despite getting to a point where I could see it (bolt rusted and didn't want to round it out) so had to tow it to a garage. After changing crank sensor with no luck they did some scans and had both crank and cam sensor error so suggested engine timing hence the cam sensor (and a new belt but that's another story!!) . They did get it running after a bit of cranking and thought that was problem solved but back to square one when I went to collect and it wouldn't start. They had an electrical engineer look at it and he suggested loom or ECU.


Wish I had stopped at crank sensor! Will test the injectors as described - appreciate it's a tricky one to diagnose so am grateful for the suggestions!

[FLAPPERJACK76]

Injectors don't always show a fault and you can try it at no cost.

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[jamesh89]

Thanks for the advice! I'm going to be parking up the car for 5 months now and will revisit the troubleshooting when I get back - will be sure to try the injectors and advise of the solution! Cheers