[Ld7w_VR]

dying 24v - Electrical problem and misfire

So about 2 weeks ago I was on the way to school and felt my car bog down and buck. It only did it once and went back to normal so I did not think much of it. Later that day after I had come back home, I was again heading back to school for another class and when I felt the same thing. Bogged down, bucked, started to shutter, and sounded absolutely horrible. The check engine light also started flashing when the engine was under load so I figured it was a coilpack or spark plug. Next day I narrow this misfire down to cyl. 4 easily in between classes. By this time when I would drive the car all I could smell is fuel. Could smell it in the car, outside the car, and for awhile after it was shut off. Went ahead and changed the coil packs around and still cyl. 4. Put a new spark plug in and it does not work.

So I take the other 5 that I have at home a through them in just to amuse myself. Still the same misfire in cyl. 4. Put the new coil in cyl. 4 for the hell of it and nothing. Put all the old stuff back in with no positive or negative results. So then I figured it seemed to be a fueling issue with the injector for cyl. 4. I changed out the fuel filter for the first time on this car and ran a high concentration of fuel injector/fuel system clearner in hope that may help clean the fuel system if there was some junk in there. Nothing. So the next morning I took it apart to see what the hell was going on. From the searching I did on here there was a possibility that the o-rings that seal the injector to the head could have gone bad on that injector in cyl. 4. I was hoping this may be the problem because I didn't want to buy a new injector. hahah.
When I took it all apart I replaced all the vacume lines that were in any type of bad shape, replaced the intake manifold gasket because it was being removed, replaced the rubber o-rings on the number 4 cylinder, put all the new spark plugs in, and a new coil for cylinder 5 because of a melt down.
Got it all back together Friday night of last week after waiting for parts through the week. Started it up and it ran great. Took it down a couple blocks and back just for the text drive after everything was apart. So I was back to driving it. Then yesterday(Monday) comes along and im on the way back to one of my classes and what happens?

Same thing as before. I got two days out of it before the same symptoms cam back. Also have went through most of the same diagnosing procedures.
My next steps are to check the alternator to see how much power it is putting out and make sure its the right amount, check battery to see if it has boiled over, and check the voltage regulator. Below is the read out from Vag com.
VCDS Version: Release 908.1
Data version: 20091018
Monday,01,February,2010,15:45:09:45947
Chassis Type: 1J - VW Golf/Bora IV
Scan: 01 02 03 08 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57 75
76
VIN: 9BWDH61J934021159 Mileage: 152180km/94560miles
-------------------------------------------------------------------------------
Address 01: Engine Labels: None
Part No: 022 906 032 CS
Component: 2.8-LEV-Mj03 G 1482
Coding: 00032
Shop #: WSC 09416
9BWDH6xxxxxxxxxxx VWZ7Z0B5350981
12 Faults Found:
16588 - Injector: Cylinder 4 (N33): Circuit Malfunction
P0204 - 35-10 - - - Intermittent
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-00 - -
16688 - Cylinder 4: Misfire Detected
P0304 - 35-00 - -
17778 - Cylinder 6 Ignition Circuit: Open Circuit
P1370 - 35-10 - - - Intermittent
17775 - Cylinder 5 Ignition Circuit: Open Circuit
P1367 - 35-10 - - - Intermittent
17772 - Cylinder 4 Ignition Circuit: Open Circuit
P1364 - 35-10 - - - Intermittent
17769 - Cylinder 3 Ignition Circuit: Open Circuit
P1361 - 35-10 - - - Intermittent
17766 - Cylinder 2 Ignition Circuit: Open Circuit
P1358 - 35-10 - - - Intermittent
17763 - Cylinder 1 Ignition Circuit: Open Circuit
P1355 - 35-10 - - - Intermittent
16497 - Intake Air Temp. Sensor (G42): Signal too High
P0113 - 35-10 - - - Intermittent
16589 - Injector: Cylinder 5 (N83): Circuit Malfunction
P0205 - 35-00 - -
16689 - Cylinder 5: Misfire Detected
P0305 - 35-00 - -
Readiness: 0000 0000
-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 1C0-907-37x-ESP-F.lbl
Part No: 1C0 907 379 M
Component: ESP FRONT MK60 0102
Coding: 0019970
Shop #: WSC 00000 785 00200
4 Faults Found:
00778 - Steering Angle Sensor (G85)
004 - No Signal/Communication - Intermittent
01314 - Engine Control Module
004 - No Signal/Communication - Intermittent
00668 - Supply Voltage Terminal 30
008 - Implausible Signal - Intermittent
01044 - Control Module Incorrectly Coded
000 - - - Intermittent
-------------------------------------------------------------------------------
Address 15: Airbags Labels: 6Q0-909-605-VW5.lbl
Part No: 1C0 909 605 F
Component: 08 AIRBAG VW61 0202 0001
Coding: 12344
Shop #: WSC 00000
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 1J0-920-xx5-17.lbl
Part No: 1J0 920 926 F
Component: KOMBI+WEGFAHRSP VDO V07
Coding: 07234
Shop #: WSC 00000
9BWDH61J934021159 VWZ7Z0B5350981
No fault code found.
-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels: 6N0-909-901-19.lbl
Part No: 6N0 909 901
Component: Gateway K<->CAN 0001
Coding: 00006
Shop #: WSC 00000
No fault code found.
-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 1C0-959-799.lbl
Part No: 1C0 959 799 C
Component: 8B Komfortgerát HLO 0003
Coding: 00064
Shop #: WSC 00000
Part No: 1C1959801A
Component: 8B Tõrsteuer.FS KLO 0002
Part No: 1C1959802A
Component: 8B Tõrsteuer.BF KLO 0002
No fault code found.
-------------------------------------------------------------------------------
Address 56: Radio Labels: 3B7-035-1xx-56.lbl
Part No: 3B7 035 180
Component: Radio 001 0010
Coding: 00031
Shop #: WSC 00000
No fault code found.
End ---------------------------------------------------------------------
If anyone has experienced or has any helpfully input please post up and let me know. Remember though that the number 5 coilpack is brand new along with all the spark plugs and it has the same open circuit intermittent code as the rest of the old coils. Makes me think the coils are fine and that it is something else. Let me know.

to you for reading this. http://****************.com/smile/emthup.gif

Modified by VR6VDub172 at 6:31 PM 2-2-2010-


Modified by VR6VDub172 at 5:43 PM 4-8-2010

 

[Ld7w_VR]

Re: dying 24v (VR6VDub172)

Also was just recommended by a friend that works at a shop to check grounds. SO that will be added to the list.

 

[apstguy]

Re: dying 24v (VR6VDub172)

That sounds like a power/ground issue to me. Some of those codes look like random ones from power fluctuations. I like this one:
01044 - Control Module Incorrectly Coded
000 - - - Intermittent
Can someone tell me how a control module is incorrectly coded only some of the time?

 

[Ld7w_VR]

Re: dying 24v (apstguy)

Quote, originally posted by apstguy »

Can someone tell me how a control module is incorrectly coded only some of the time?

Yea that one kind of had us wondering. That why im starting with the alternator, voltage regulator, etc. Cant wait to have this figured out. Thanks for reading and your input.


Modified by VR6VDub172 at 6:42 PM 2-2-2010

 

[apstguy]

Re: dying 24v (VR6VDub172)

You are on the right track http://****************.com/smile/emthup.gif

 

[spitfire481]

Re: dying 24v (apstguy)

there are a couple grounds in the wiper tray too, dont forget them http://****************.com/smile/emthup.gif

 

[Ld7w_VR]

Re: dying 24v (spitfire481)

Quote, originally posted by apstguy »

You are on the right track http://****************.com/smile/emthup.gif

Yea. Have to start somewhere.

Quote, originally posted by spitfire481 »

there are a couple grounds in the wiper tray too, dont forget them http://****************.com/smile/emthup.gif

Ok. I have my Bentley manual which show the grounding points. Also a good friend of mine got some other info on the grounding points from All Data at his shop. Once this snow goes away im getting to work no matter how cold it is.

 

[Ld7w_VR]

Re: dying 24v (VR6VDub172)

TTT

 

[G_Lader_91]

Re: dying 24v (VR6VDub172)

Dude, I know its not much encouragement, but good luck with this, I've been following this since day one, and you have got me pondering also

I know on 1.8ts the ECU and the coil wiing harness are on the same fuse. I know that seems too simple, but maybe the wires have become brittle and have small cracks? Happens with the 1.8ts, they even sell a new harness to replace it.
My roommate is from upstate NY and his car had a very similar issue(again a 1.8t). Even threw some crazy ECU DTC's. Eventually started randomly blowing the ECU/coil wire fuse.
Given that you live in the North, I assume they use salt (yuck) to de-ice the roads? That is 10x worse for things like wiring..just throwing out some thoughts mang..Again, Good luck with this and keep us posted http://****************.com/smile/emthup.gif

 

[Ld7w_VR]

Re: dying 24v (coatofarms)

Yea I have not had a chance to get into it yet because of the weather and unfortunately about 2ft. of snow is expected tomorrow through Saturday.

But I do know about the 1.8t problem. I replace the whole coil harness on my girls car and updated this thread with pics and info.
http://forums.vwvortex.com/zerothread?id=2597240
But thanks ill keep this in mind. I need to go buy a Digital Multimeter then get to work.

Thanks.



Modified by VR6VDub172 at 3:57 PM 2-4-2010

 

[Ld7w_VR]

Re: dying 24v (VR6VDub172)

Man I really want to work on my car but the 2 1/2ft. of snow was stopping me. I now were are expecting another 12-20in. that has already started.

 

[Ld7w_VR]

Re: dying 24v (VR6VDub172)

Bump because right now this thread has more activity then I have seen in months.

 

[Ld7w_VR]

Re: dying 24v (VR6VDub172)

So today I started work on the car. It has been put off because of weather and my schedule. Today I started by checking all ground in the engine bay area. Un bolted them all and used my dremel with a wire wheel tip to clean all surfaces of the ground connections then put them back. The grounds had corrosion on them, especially the two under the battery tray. Also plan on doing a grounding kit before this is all said and done. Will be keeping updates as I continue.

 

[Ld7w_VR]

Re: dying 24v (VR6VDub172)

So today I took the intake manifold off to check out the injector harness to see if everything is good there. Also replacing fuel lines in the engine bay after finding my fuel leak. Pics soon maybe.

 

[Ld7w_VR]

Re: dying 24v (VR6VDub172)

So I have figures out the injector code. The connector the clips to the injector was messed up and would not hold the connector on correctly. New ones should be here today then the car will go back together Thursday morning.
Pics will be coming soon.

 

[vr666nick]

all those to high of voltage codes mean either unplugged sensor or bad wire or theres an issue inside the ecu on the board. plug in the vag and jump the the connectors and watch wat the voltage does its and easy way to find bad wires

 

[Ld7w_VR]

Re: (vr666nick)

Quote, originally posted by vr666nick »

all those to high of voltage codes mean either unplugged sensor or bad wire or theres an issue inside the ecu on the board. plug in the vag and jump the the connectors and watch wat the voltage does its and easy way to find bad wires

Those are from me unplugging the coils to see if one went out.
Also worked on it for about 2 hours today. Took the injectors out cleaned them and the injector ports. Then replaced the o-ring on all of them. Put the fuel rail back together and replaced a couple of the connectors to the injectors. Other then that I did a bunch of cleaning. Plan to finish it up on Saturday.

 

[Ld7w_VR]

Re: dying 24v (VR6VDub172)

So yesterday everything went back together with new injector o-rings for all injectors and 3 new connectors for the injectors. Started it and it idled fine and reved up fine. Took it for a test drive and felt a little hesitation then the check engine light came on. Over all the car runs a **** ton better. Found a couple small vac. leaks after the test drive that I have fixed. Still something wrong but until I get another scan this is just an update. Also my car has never idled as nice as it does not. I think cleaning all the ground wires made a big difference.
So now on to what going on with the car. Idles great like said.As soon as the car is put into gear it starts to have a a hesitation and bucking a little bit. But when I hit it its like the car is back to normal and runs really good from mid to high end. If anyone has any ideas let me know. Ill post up again once I get another scan.

 

[Ld7w_VR]

Re: dying 24v (VR6VDub172)

So am getting the car scanned hopefully next week and then I will see what is going on.

 

[Ld7w_VR]

Re: dying 24v (VR6VDub172)

Is anyone in the Alexandria, VA area on here? Do you have a vag-com? Having a scan is holding me back from finishing this thread up.

I know people with vag-com, but schedules are conflicting. Thanks