Dead Throttle problem (accelerator pedal? Cam sensor?)

I am very perplexed and frustrated. My 06 Jetta TDI with the BRM engine has served me well overall and is just 5k from passing 400,000 miles. Financially I really hope to get a few more miles out of her and in the last year or two I've put a new cam, timing belt, clutch and other things. I was hoping she was good for a while. BUT...

About five months ago I ran into intermittent problems where the accelerator would just go dead. The pedal still moved up and down, but the car would just idle as if the pedal wasn't being pushed at all. It was almost as if somebody cut the wire to the pedal. As soon as I pushed the clutch in, everything returned to normal and the engine sprang back to life and the car took off again. It happened once a week, then every couple days, and then it finally happened and I couldn't get it to run right again. I replaced the accelerator pedal (which I think includes the potentiometer) with one out of a junk yard and everything ran perfect for five months. Unfortunately, earlier this week it started happening again, except it got worse much more quickly and now it runs, but it won't rev at all. I bought another accelerator pedal from the junk yard and put it in tonight and it didn't fix a thing. It does throw on a check engine light and the glow plug light flashes. I do have VCDS and cleared the codes. It doesn't always throw the same codes. I think it's either possessed or confused. One code that regularly comes up is camp position sensor. I had a new sensor on the shelf, so I put it in, but it didn't fix anything. Currently it starts a little hard and then idles fine, but won't rev or accelerate. It has the following codes:

000833 - Camshaft Position Sensor (G40)
P0341 - 000 - Implausible Signal

001602 - Sensor Reference Voltage A: Circuit
P0642 - 000 - Low - Intermittent

008214 - Intake Manifold Flap Position Sensor (Bank 1)
P2016 - 000 - Short to Ground

I'd love any solid advice or leads you can give me. I need to get this car back on the road this week. Thanks!!!! - Crdouger

Since you've got VCDS, check that both sides of the brake switch are working as expected.

The car is programmed to ignore the accelerator pedal if it thinks the brakes are on, and either set of contacts will do it.

A bad brake light switch will also trigger a flashing glowplug light "fix me now" light.

Thanks Vince. I'll definitely check that. I wouldn't expect bad brake contacts to make the car start hard and throw codes...but it's worth checking out. I'm open to any ideas.

Quick update - brake sensors seem to be working fine. I double checked the alternator voltage to see if it the voltage was over or under and it was steady at about 14.2. I wiggled the pigtail wire going to the accelerator tonight and it started working briefly, but then stopped again and I haven't been able to get it to work again. It still is giving me a cam position sensor fault and a intake manifold flap sensor fault (which I assume isn't related.) I put a new cam position sensor in yesterday, but it was an aftermarket one off ebay instead of brand name one. Now I don't know if the old cam sensor was fine or if it was bad and the new cheap one is bad too. Advice (that isn't too expensive)?

Final update - I put a third used accelerator pedal in and it seems to have solved the problem. Either these pedals wear out over dozen years or I just have really bad luck with broken ones.

Ok...That wasn't the final update. After working fine for two weeks, the problem returned today. It makes me wonder if I have some other electrical problem that is ruining my accelerator pedals circuits. I really don't want to scrap the car, but I'm at a loss for what to do anymore. Any genius ideas out there?

Are you seeing the %figure move in group 2 of the engine module?
And is this per chance a DSG car?

Yes, it's a DSG.
Yes, the % figure moves when I press the accelerator. I haven't watched this detail before to know what it looked like when the accelerator was working correctly, but it seems like the % number changes more dramatically than how much the pedal is moving. By that I mean when I'm trying to hold the pedal nice and still with my foot, the % still keeps jumping around a fair amount. If I press the pedal all the way down to the carpet and hold it there, the % will jump to 100% and then drop down and jump back up to 100% and then drop and jump back up....etc.

I hope that helps. I'm curious to hear if you have any suggestions.

crdouger said:

Yes, it's a DSG.
Yes, the % figure moves when I press the accelerator. I haven't watched this detail before to know what it looked like when the accelerator was working correctly, but it seems like the % number changes more dramatically than how much the pedal is moving. By that I mean when I'm trying to hold the pedal nice and still with my foot, the % still keeps jumping around a fair amount. If I press the pedal all the way down to the carpet and hold it there, the % will jump to 100% and then drop down and jump back up to 100% and then drop and jump back up....etc.

I hope that helps. I'm curious to hear if you have any suggestions.

Click to expand...

Do you still have any of the old pedals to see if the % jumps around the same way?...or to see if the old pedals all of a sudden work OK again?
If so, that to me would indicate to look for a problem elsewhere such as a harness/terminal problem.

Finally had an hour to work on the car again this morning. Took it for a quick drive and it failed similarly as before. I pulled the car in the garage, cleared the fault codes so I could have a clean start and voila! it suddenly ran normal again. So I took it out for another drive...no problems! What. the. heck. I drove around the neighborhood and country roads for an hour with no problems at all.

Here are my conclusions, tell me what you think:
- I don't think it's a bad, cracked or lose wire because clearing the codes wouldn't affect that.
- I don't think it's the accelerator pedal because that didn't change when I cleared the codes and suddenly it started working fine again.
- Could it be related to my camshaft position sensor? I replaced my original one with a $40 one from ebay a few weeks ago. Although, it didn't seem to make a difference when I swapped that out.

Any other ideas?

Perhaps the ECU and DSG mechatronic can't calibrate the pedal with an outstanding code in memory.
Time will tell.

(insert funeral dirge)

I'm think I'm at the end of my road with this car. After my last post I drove the car for two weeks and put on 200 miles with out any problems. Then the next time I hopped in to take off...the accelerator pedal stopped working again and the check engine code came up. Below is a copy of my autoscan. While I had vagcom hooked up to it, the car suddenly stumbled or shuddered (kind of like it misfired) and the vagcom disconnected from the ECU as if I had unplugged the cable or turned the car off. I thought this might be a clue that something was wrong with the ECU. I had a spare, so I swapped the different ECU in, but nothing changed. My final conclusion (with VERY LITTLE confidence) is that there is a wiring problem somewhere and I have no idea where or how to track it down. Unless I'm suddenly struck with a bolt of inspiration or somebody has a new idea, then I think I'm going to part the car out this fall and start looking for a new car. I was only 4,000 miles away from crossing the 400,000 mile marker...so sad. If anybody has any ideas, let me know.

-Crdouger


Thursday,20,June,2019,16:36:51:17727
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 18.9.1.0 (x64)
Data version: 20190114 DS296.0
www.Ross-Tech.com


VIN: 3VWDT71K66M631789 License Plate:
Mileage: 636910km-395757mi Repair Order:



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


Chassis Type: 1K (1K0)
Scan: 01 03 08 09 0F 15 16 17 19 1C 25 36 42 44 46 52 56 62 72 7D


VIN: 3VWDT71K66M631789 Mileage: 636910km-395757miles

00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: Malfunction 0010
0F-Digital Radio -- Status: Malfunction 0010
15-Airbags -- Status: Malfunction 0010
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: Malfunction 0010
19-CAN Gateway -- Status: Malfunction 0010
1C-Position Sensing -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
36-Seat Mem. Drvr -- Status: Malfunction 0010
42-Door Elect, Driver -- Status: Malfunction 0010
44-Steering Assist -- Status: Cannot be reached 1100
46-Central Conv. -- Status: Malfunction 0010
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
7D-Aux. Heat -- Status: Cannot be reached 1100

-------------------------------------------------------------------------------
Address 01: Engine Labels: 038-906-016-BEW.lbl
Part No SW: 03G 906 016 AB HW: 028 101 223 8
Component: R4 1,9L EDC G000SG 7550
Revision: --H01--- Serial number: VWZ7Z0E2458333
Coding: 0050071
Shop #: WSC 00066 000 00000
VCID: 63EB673BA2108752A0-8036

2 Faults Found:
008214 - Intake Manifold Flap Position Sensor (Bank 1)
P2016 - 000 - Short to Ground
Freeze Frame:
Fault Status: 01100000
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 636917 km
Time Indication: 0
Date: 2000.00.00
Time: 00:01:24

Freeze Frame:
RPM: 798 /min
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 14.29 V
Mass Air / Rev.: 215.0 mg/str
Duty Cycle: 95.1 %
Bin. Bits: 00000000

000833 - Camshaft Position Sensor (G40)
P0341 - 000 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 0
Fault Frequency: 70
Reset counter: 255
Mileage: 636917 km
Time Indication: 0
Date: 2000.00.00
Time: 19:44:59

Freeze Frame:
RPM: 819 /min
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 14.44 V
Bin. Bits: 00101100
Idle Stabilization: 0.0°KW
(no units): 48.0

Readiness: 1 1 0 0 1

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 1K0-907-379-MK60-F.lbl
Part No SW: 1K0 907 379 Q HW: 1K0 907 379 Q
Component: ESP FRONT MK60 0102
Revision: 00T12001
Coding: 0021122
Shop #: WSC 00066 000 00000
VCID: 40A188B713C6FC4A9D-8014

2 Faults Found:
00668 - Supply Voltage Terminal 30
008 - Implausible Signal - Intermittent
01309 - Power Steering Control Module (J500)
004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 1K0-907-044.lbl
Part No: 1K0 907 044 BA
Component: ClimatronicPQ35 066 0606
Shop #: WSC 00000 000 00000
VCID: 67F3732B5628EB727C-8032

2 Faults Found:
00402 - Auxiliary Air Heater Element (Z35)
004 - No Signal/Communication
01274 - Air Flow Flap Positioning Motor (V71)
000 - -

-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels:. 3C0-937-049-23-H.lbl
Part No SW: 3C0 937 049 E HW: 3C0 937 049 E
Component: Bordnetz-SG H37 1002
Revision: 00H37000 Serial number: 00000000106715
Coding: A4019E234104180000140000001400000008770B5C
Shop #: WSC 03087 444 54618
VCID: 2B7BCF1B8A400F1258-807E

Subsystem 1 - Part No: 1K1 955 119 C Labels: 1KX-955-119.CLB
Component: Wischer VW350 012 0402
Coding: 00065493
Shop #: WSC 03087

3 Faults Found:
00483 - Control Module for Auxiliary Air Heater
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 254
Reset counter: 194
Mileage: 632670 km
Time Indication: 0

Freeze Frame:
OFF
Voltage: 12.20 V
OFF
ON
OFF
OFF
OFF

01207 - Control Module for Auxiliary Heater (J364)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 254
Reset counter: 194
Mileage: 549387 km
Time Indication: 0

Freeze Frame:
OFF
Voltage: 12.55 V
OFF
ON
OFF
OFF
OFF

02390 - Control / Regulation for Ambience Lighting (E400)
009 - Open or Short to Ground
Freeze Frame:
Fault Status: 01101001
Fault Priority: 5
Fault Frequency: 1
Reset counter: 194
Mileage: 551507 km
Time Indication: 0

Freeze Frame:
ON
Voltage: 14.50 V
ON
ON
OFF
OFF
OFF


-------------------------------------------------------------------------------
Address 0F: Digital Radio Labels: 8E0-035-593-XM.lbl
Part No SW: 8E0 035 593 E HW: 8E0 035 593 E
Component: SDAR XM H03 0080
Revision: 00000000 Serial number: AUZ4Z7E3026588
Shop #: WSC 00000 000 00000
VCID: 2B7BCF1B8A400F1258-807E

1 Fault Found:
02635 - Tuner Not Enabled/Activated
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 7
Fault Frequency: 254
Reset counter: 232
Mileage: 536587 km
Time Indication: 0
Date: 2000.00.00
Time: 16:34:39


-------------------------------------------------------------------------------
Address 15: Airbags Labels: 1K0-909-605.lbl
Part No SW: 1K0 909 605 E HW: 1K0 909 605 E
Component: 1S AIRBAG VW8R 024 6300
Revision: 03024000 Serial number: 0037KD02NA80
Coding: 0012627
Shop #: WSC 00066 000 00000
VCID: 2E7DC60FB9527A3A7F-807A

Subsystem 1 - Part No: 1K0 959 339 B
Component: BF-Gewichtsens. 006 0003

Subsystem 2 - Serial number: 6332MSME0A1B43459

Subsystem 3 - Serial number: 6342MSME0A025A1EE

Subsystem 4 - Serial number: 6351HSME07012243T

Subsystem 5 - Serial number: 6361HSME072F206BB

Subsystem 6 - Serial number: 63727SME070F4B669

Subsystem 7 - Serial number: 638 SME

1 Fault Found:
01739 - Crash Sensor for Front Airbag; Pass. Side (G284)
010 - Open or Short to Plus - MIL ON

-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 1K0-953-549-MY8.lbl
Part No SW: 1K0 953 549 AJ HW: 1K0 953 549 AJ
Component: J0527 034 0070
Coding: 0002021
Shop #: WSC 00066 000 00000
VCID: 7AD53A5F359A669A93-802E

Subsystem 1 - Part No: XXXXXXXXXXX
Component: E0221 007 0050

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 1K0-920-xxx-17.lbl
Part No: 1K0 920 972 D
Component: KOMBIINSTRUMENT 3HL 1112
Coding: 0023203
Shop #: WSC 00066 000 00000
VCID: 2D7FC103B454012246-8078

1 Fault Found:
01309 - Power Steering Control Module (J500)
004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels:. 1K0-907-530-V1.clb
Part No SW: 1K0 907 530 F HW: 1K0 907 951
Component: Gateway H10 0120
Revision: H10 Serial number: 2800105423825C
Coding: 3D7F0B600F1002
Shop #: WSC 03087 444 54618
VCID: 2A75CA1F85BA161AA3-807E

2 Faults Found:
00483 - Control Module for Auxiliary Air Heater
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 254
Reset counter: 194
Mileage: 632670 km
Time Indication: 0
Date: 2000.00.00
Time: 06:44:54

01309 - Power Steering Control Module (J500)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 144
Reset counter: 194
Mileage: 636713 km
Time Indication: 0
Date: 2000.00.00
Time: 05:45:22


-------------------------------------------------------------------------------
Address 1C: Position Sensing Labels: 1Kx-919-xxx-1C.lbl
Part No SW: 1K5 919 965 A HW: 1K5 919 965 A
Component: Kompass 005 0003
Revision: 00005000 Serial number: 1293324T00YK01
Coding: 0000003
Shop #: WSC 00066 000 00000
VCID: 3957E553701CAD82DA-806C

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer Labels: 1K0-920-xxx-25.clb
Part No: 1K0 920 972 D
Component: IMMO 3HL 1112
Shop #: WSC 00000 000 00000
VCID: 2D7FC103B454012246-8078

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr Labels: 3C0-959-760.lbl
Part No SW: 3C0 959 760 A HW: 3C0 959 760 A
Component: Sitzverstellung 0601
Revision: 00002000 Serial number: 00000000000000
Shop #: WSC 00000 000 00000
VCID: 2B7BCF1B8A400F1258-807E

3 Faults Found:
02327 - Position Sensor for Front Seat Height Adjustment (G438)
006 - Short to Plus - Intermittent
02332 - Position Sensor for Backrest Adjustment (G440)
006 - Short to Plus - Intermittent
02341 - Position Sensor for Seat Fore/Aft Adjustment (G441)
006 - Short to Plus - Intermittent

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver Labels: 1K0-959-701-MIN2.lbl
Part No: 1K0 959 701 K
Component: Tuer-SG 024 2339
Coding: 0001269
Shop #: WSC 00066 000 00000
VCID: 364DEE6F410242FA37-8062

1 Fault Found:
00932 - Electric Window Motor; Drivers Side (V147)
005 - No or Incorrect Basic Setting / Adaptation - Intermittent

-------------------------------------------------------------------------------
Address 44: Steering Assist
Cannot be reached

-------------------------------------------------------------------------------
Address 46: Central Conv. Labels:. 1K0-959-433-MAX.clb
Part No SW: 1K0 959 433 AT HW: 1K0 959 433 AT
Component: 01 KSG PQ35 G2 010 0101
Revision: 00010000 Serial number: 00000000000000
Coding: 13100F880106083F6D060F8FB008CF0480A540
Shop #: WSC 03083 444 179286
VCID: 022542BF5D4A2E5ACB-8056

Subsystem 1 - Component: Sounder n.mounted

Subsystem 2 - Component: NGS n.mounted

Subsystem 3 - Component: IRUE n.mounted

2 Faults Found:
00931 - Locking Module for Central Locking; Rear Right (F223)
003 - Mechanical Failure
Freeze Frame:
Fault Status: 01110011
Fault Priority: 4
Fault Frequency: 1
Reset counter: 150
Time Indication: 0

00849 - S-contact at Ignition/Starter Switch (D)
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 4
Fault Frequency: 1
Reset counter: 223
Mileage: 636670 km
Time Indication: 0
Date: 2000.00.00
Time: 21:04:55


-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. Labels: 1K0-959-702-MIN2.lbl
Part No: 1K0 959 702 K
Component: Tuer-SG 024 2339
Coding: 0001269
Shop #: WSC 00066 000 00000
VCID: 3753E36B4608BBF22C-8062

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio Labels: 1K0-035-1xx-56.lbl
Part No SW: 1K0 035 180 C HW: 1K0 035 180 C
Component: Radio DE2 011 0014
Revision: 00011000 Serial number: VWZ4Z7E2029530
Coding: 0040400
Shop #: WSC 00066 000 00000
VCID: 20612837F386DC4AFD-8074

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

-------------------------------------------------------------------------------
Address 62: Door, Rear Left Labels: 1K0-959-703-GEN2.lbl
Part No: 1K0 959 703 D
Component: Tuer-SG 021 2416
Coding: 0000144
Shop #: WSC 00066 000 00000
VCID: 3147DD73A86C65C262-8064

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right Labels: 1K0-959-704-GEN2.lbl
Part No: 1K0 959 704 D
Component: Tuer-SG 021 2416
Coding: 0000144
Shop #: WSC 00066 000 00000
VCID: 3245D27FAD6A5EDA1B-8066

No fault code found.

-------------------------------------------------------------------------------
Address 7D: Aux. Heat
Cannot be reached

End-------------------------(Elapsed Time: 01:21)--------------------------

Just out of curiosity, has the engine wiring harness been replaced? I had some of the weirdest issues on the 06 that would crop up randomly. Was at a loss for a while, but decided to replace the engine harness after reading a few threads about issues related to that. I will say I was pleasantly surprised all my electrical issues went away.

I have not replaced. That’s a very interesting thought. Where did you get your harness and how much did it cost? How long of a job was it?

BRM engine harnesses fix a lot of goofy issues... HOWEVER... that would/should have nothing at all to do with the accelerator pedal assembly. That harness is all completely on the car, in the dash.

I would patiently go after all the grounds, which are all listed in the manual, paying special attention to the ones at the base of the driver side A-pillar (under the trim where the hood release is) and the one up to the right of the steering column.

Then I would try and perform some sort of wiggle test on the harness that has the plug to the pedal sensor on it. I've never had to replace a pedal assembly on a BRM car ever. I've only ever replaced a couple on older VAG products, and they were pretty high miles too.

Since the A5s have a different arrangement for the pedal, I am not super familiar with them even though I am down by them a LOT removing the steering for subframe removal, but don't they come down kind of low and plug in in a way that could potentially trap dirt/moisture?

BRM engine harnesses fix a lot of goofy issues... HOWEVER... that would/should have nothing at all to do with the accelerator pedal assembly. That harness is all completely on the car, in the dash.

I would patiently go after all the grounds, which are all listed in the manual, paying special attention to the ones at the base of the driver side A-pillar (under the trim where the hood release is) and the one up to the right of the steering column.

Then I would try and perform some sort of wiggle test on the harness that has the plug to the pedal sensor on it. I've never had to replace a pedal assembly on a BRM car ever. I've only ever replaced a couple on older VAG products, and they were pretty high miles too.

Since the A5s have a different arrangement for the pedal, I am not super familiar with them even though I am down by them a LOT removing the steering for subframe removal, but don't they come down kind of low and plug in in a way that could potentially trap dirt/moisture?

As far as the other DTCs, the CMP sensor and throttle flap... those ARE on the engine, and ARE likely to be afflicted with and engine harness issue. Any more, if I get a BRM here with some strange malady that makes no obvious sense on some electrical bit on the engine, it gets a new harness, and it gets fixed. I have two here today... one that already as been fixed, one that needs to be. One with about 260k, one with about 280k. That is a VERY common problem. I have probably done 50+ of them now.

crdouger said:

I have not replaced. That’s a very interesting thought. Where did you get your harness and how much did it cost? How long of a job was it?

Click to expand...

Don't know on the price as I used my Dieselgate goodwill money to get it from the dealership.If I recall correctly, list price was around $300 at the time.I think ECS carries them, and has specials periodically. As for time, Oilhammer might be able to give you an idea. I have no clue, as a bunch of other stuff was done at the same time.

Thanks for the advice. I've dismantled a good chunk of the wire harness under the hood inspecting it and looking for chaffing or wear or cracks. Under the dash I've wiggled and pulled and tugged and twisted and squeezed the wires near the accelerator, but couldn't get it to address the problem. I thought maybe the problem was between the ECU and the engine instead of between the accelerator and the ECU. But I'm becoming pretty convinced this problem is beyond my ability.

oilhammer said:

BRM engine harnesses fix a lot of goofy issues... HOWEVER... that would/should have nothing at all to do with the accelerator pedal assembly. That harness is all completely on the car, in the dash.
I would patiently go after all the grounds, which are all listed in the manual, paying special attention to the ones at the base of the driver side A-pillar (under the trim where the hood release is) and the one up to the right of the steering column.
Then I would try and perform some sort of wiggle test on the harness that has the plug to the pedal sensor on it. I've never had to replace a pedal assembly on a BRM car ever. I've only ever replaced a couple on older VAG products, and they were pretty high miles too.
Since the A5s have a different arrangement for the pedal, I am not super familiar with them even though I am down by them a LOT removing the steering for subframe removal, but don't they come down kind of low and plug in in a way that could potentially trap dirt/moisture?
As far as the other DTCs, the CMP sensor and throttle flap... those ARE on the engine, and ARE likely to be afflicted with and engine harness issue. Any more, if I get a BRM here with some strange malady that makes no obvious sense on some electrical bit on the engine, it gets a new harness, and it gets fixed. I have two here today... one that already as been fixed, one that needs to be. One with about 260k, one with about 280k. That is a VERY common problem. I have probably done 50+ of them now.

Click to expand...

The "other" harness that connects to the ECU in the cowl runs over sort of under/behind the wiper motor. Debris and water and critters can get in that area, it is possible there is a harness problem there. Might be worth a look.

Intermittent problems are the worst, I know. I've certainly chased a lot of them over the years. And when things go wrong, unrelated items can have adverse effects on things you never thought they would. Like a 3rd gen Taurus' neutral safety switch, on top of the transmission, causing the radio, which on that car is actually mounted in the TRUNK (the part on the dash is just the control head), to go fruity randomly.

For what it is worth, one car, an 02 TDI had a similar problem, and while debugging it, I realized that there are two paths to get throttle commands. If you can get it over 30 mph, you can use the cruise control to get it home. Doesn't solve your problem, but I thought I would share that.

VChristian said:

For what it is worth, one car, an 02 TDI had a similar problem, and while debugging it, I realized that there are two paths to get throttle commands. If you can get it over 30 mph, you can use the cruise control to get it home. Doesn't solve your problem, but I thought I would share that.

Click to expand...

In the context of this thread, it is worth very little. Completely different car, with a completely different EDC system.

Late to this thread. In reading the thread, it appears that you have not yet cleaned the connections & fusible link connections on the forward face of the engine space fuse box. Those caused a number of problems on my 1st BRM.

I 2nd Oil Hammer's comment about cleaning ALL, every one (not just the peach colored one under the battery). Don't forget the engine to chassis strap.

Good luck with it.

Hi Crdouger. I realise some time has passed since this thread was active, but i have an identical ongoing problem with a BKD engined Golf 5, and followed all the same paths that you took. It's driving me a little bit mad. Did you ever manage to solve the issue?

nope. Sorry. I never solved the mystery. I ended up selling the car for parts. Good luck.

Did anyone find a solution to this issue with the cam sensor fault and loss of throttle peddle?

Did anyone find the solution with the bkd 2.0tdi dead throttle peddle and camshaft fault having similar issues with mine . Checked all the loom for chafeing around the block and replaced the cam sensor any other ideas out there cheers.

Hi guys did anyone find a solution to the intermittent loss of throttle pedal response cheers

Mike j said:

Hi guys did anyone find a solution to the intermittent loss of throttle pedal response cheers

Click to expand...

Rereading the thread, I can only comment that when faced with a similar issue on an 02 TDI, I found that if I could get over 30 MPH, I could drive home (long distance) with the cruise control. I ended up replacing the TPS, which was intermittent. Problem solved.