PDA

View Full Version : juddering and esp light on



swany99
25-10-2008, 01:30 PM
hi just looking for a little insight to see if anyone had same symptoms and what it was. vw passat 2002 2ltr tdi diesel. car had a new clutch in january but recently my partner been complaining of the car juddering and when driving and she reving but it not going anywhere fast which my first thoughts was the clutch. but after having a look at the car the juddering seems to come and go and only do it sometimes which throwed me if it was the clutch you would think it would do it all the time. took it a drive last night and started juddering but when not juddering it has plenty torque and feels like no slippage but kicked the cars butt up a hill in low gear which it started juddering/slipping and the esp light come on and when i stopped the engine was hunting but idle speed seemed to stay steady and turned ignition off and back on and light out and engine fine. some questions?
*could if the clutch was away and slipping bring the light on?
*heard some people on about there car juddering and esp light coming on and it being the wiring?

any info would be appriciated thanx.

swany99
25-10-2008, 01:31 PM
update!

took the car for a run this morning which was ok to start with then got above 3000rpm and started vibrating/juddering and esp light come on tried switching off and back on but still juddering and esp light back on.took back home and sitting idling the car is definatly missing then coming back to normal then missing again but the esp light comes on when its missing this is why i can't understand.

input please?

smokey0123
25-10-2008, 01:35 PM
It sounds like a Dual Mass Flywheel problem. A fault code read will point you in the right direction.

Crasher
25-10-2008, 01:45 PM
A 2002 2.0 litre TDI? I don’t think so. It will be a 1.9 and either 100 or 130PS with an AVB, AVF or AWX engine. If you take the car to a garage and get a fault code read done it will probably show code “16685 P0301 Cyl. 1 Misfiring recognised” and “18074 P1666 Unit injector solenoid valve, no. 1 cyl. -N240 Electrical fault in circuit”. This is usually down to a faulty in head injector wiring harness which is VW part number 038 971 600 costs around £44 and takes an hour to fit.

swany99
25-10-2008, 01:50 PM
hi yes crasher you are right sorry my mistake its a 1.9 130ps. i have a handheld code reader but its not picking up any engine faults and i don't know wheather you need specialist equiptment to read the abs/esp faults. would this injector wiring cause the esp light to come on indicating a fault in that system though?

Crasher
25-10-2008, 01:54 PM
If the ESP light is coming on it should be generating an engine fault code, we see this problem a lot. My local VAG TSP sells around four of these harnesses per day because of this. So no ABS or engine fault codes at all?

smokey0123
25-10-2008, 02:29 PM
A 2002 2.0 litre TDI? I don’t think so.

I missed that 1 Crasher :o

swany99
26-10-2008, 09:39 PM
hi all just a update i removed injector wiring and checked continuity of wiring which was perfect and checked continuity of unit injector solenoids which were within tolerance. closed wire connectors for a good connection on injectors. removed throtle body/flap housing which was shockingly carboned all round by a couple of mm thick at least. spent a hr cleaning till spotless and re-installed everything and tested car which was perfect. so if anyone getting judder which honestly feels like clutch slipping when driving and bringing esp light on misteriously check this part of the engine. thanks for everyones input.

Crasher
26-10-2008, 11:28 PM
So you didn’t bother to get a fault code read done then?

Eshrules
27-10-2008, 09:23 AM
hi all just a update i removed injector wiring and checked continuity of wiring which was perfect and checked continuity of unit injector solenoids which were within tolerance. closed wire connectors for a good connection on injectors. removed throtle body/flap housing which was shockingly carboned all round by a couple of mm thick at least. spent a hr cleaning till spotless and re-installed everything and tested car which was perfect. so if anyone getting judder which honestly feels like clutch slipping when driving and bringing esp light on misteriously check this part of the engine. thanks for everyones input.

is this still the tdi that you've removed the throttle body from? :confused:

and as above, have you had the vehicle fault read?

swany99
27-10-2008, 09:46 PM
yes same car. removed throttle/stop flap housing which was full of carbon. yes also had it on code reader with no errors showing. checked continuity of injectors 0.05ohms for injectors 3 & 4, 0.06ohms for inj 2 and 0.08ohms for injector 1 which is ok. the injector wiring on all cables was 0.05ohms which is basically perfect cables.

Crasher
27-10-2008, 11:32 PM
Taken directly at the solenoid connection the resistance should be 0.5Ω, the VW quote is;

Note:
The specification of approx 0.5ωapplies to a measurement taken directly at the solenoid valve of the unit injector. With the measuring method used here, the wiring resistance has to be added to this figure, so that the reading will always be 0.3 ... 0.5 ω above the specified value.

e604005
29-10-2008, 08:04 AM
Hi

I have the same car starts to judder and ESP light comes on, normally only after about 10min driving down the motorway. Turn ingition off and all seems okay. I have put this on Vag-Com and I get the following error code 18074 P1666 Unit injector solenoid valve, no. 1 cyl. -N240 Electrical Malfunction”. should I replace the injector - which looks a nightmare and special tools required, or buy a new harness?

Crasher
29-10-2008, 10:25 AM
Humm, now let me see-should you replace the cheap part that takes an hour to do or the expensive one that takes a lot longer and is difficult to do, not really sure which way to go here. ;)

It is most likely to be the harness.

B8 TDI
29-10-2008, 01:05 PM
Hi

I have the same car starts to judder and ESP light comes on, normally only after about 10min driving down the motorway. Turn ingition off and all seems okay. I have put this on Vag-Com and I get the following error code 18074 P1666 Unit injector solenoid valve, no. 1 cyl. -N240 Electrical Malfunction”. should I replace the injector - which looks a nightmare and special tools required, or buy a new harness?


It depends on who you ask, take it to a workshop or dealer and you will likely be informed that you should replace the injector and since one has gone you should replace all four to be safe, they will then promptly replace the harness and charge you for 4 injectors + lots of labour.

Or you can just replace the harness.

e604005
29-10-2008, 01:08 PM
I have just ordered an new harness £42.00 inc Vat. They have them in stock, so looks to be a very common problem. Will be working on it this weekend.

Thanks for your replies. :beerchug:

Crasher
29-10-2008, 01:39 PM
It depends on who you ask, take it to a workshop or dealer and you will likely be informed that you should replace the injector and since one has gone you should replace all four to be safe, they will then promptly replace the harness and charge you for 4 injectors + lots of labour.

Or you can just replace the harness.

Being in the garage trade, I find the inference of fraud and theft by garages in this post offensive. Suggesting a dealer or garage would charge around £2200 (four genuine injectors are £1850 plus labour) and only change the harness is a little below the belt.

B8 TDI
29-10-2008, 04:29 PM
Being in the garage trade, I find the inference of fraud and theft by garages in this post offensive. Suggesting a dealer or garage would charge around £2200 (four genuine injectors are £1850 plus labour) and only change the harness is a little below the belt.

Sorry Crasher i didn't mean to offend and it was probably wrong of me to generalise to that extent, but unfortunately there are a number of dishonest garages out there.

My wife recently took her car for a majorservice to a "reputable" well known franchise that I have used often, she was overcharged, and after a couple of weeks she started complaining about performance.

I checked and discovered that clearly no service had been done, the air filter was completely blocked, plugs were not changed, oil was in a bad condition etc.:zx11:

Crasher
29-10-2008, 05:49 PM
There are dishonest people in every trade, just look at the shares derivatives market! Ohh to see them get stuffed over VW shares made my morning :approve: .

Your wife’s bad service may have just been a mistake rather than actual dishonest charging, these large franchises have been known to have a car in and think it has been serviced, hand it back and the customer finds it hasn’t. Not dishonest, just shear incompetence.

Anyway, my offence taken is now retracted as long as you go and admonish yourself with a large shredded thrashing stick :D .

swany99
30-10-2008, 07:07 PM
hi E604005

if you have a problem don't just c hange things and hope it cures it. you should test things like the injector solenoids and wiring remembering to bend/wiggle wiring when testing it. bearing in mind the injector solenoids might be ok when tested but i have come across many solenoids before not these injector solenoids but one when they get hot they breakdown/open circuit. if going to change wiring need a way to get it out head without breaking plastic cage which holds wiring. check throttle/stop flap for major carbon build-up with the problem you have.

1299cc
04-11-2008, 12:00 PM
A 2002 2.0 litre TDI? I don’t think so. It will be a 1.9 and either 100 or 130PS with an AVB, AVF or AWX engine. If you take the car to a garage and get a fault code read done it will probably show code “16685 P0301 Cyl. 1 Misfiring recognised” and “18074 P1666 Unit injector solenoid valve, no. 1 cyl. -N240 Electrical fault in circuit”. This is usually down to a faulty in head injector wiring harness which is VW part number 038 971 600 costs around £44 and takes an hour to fit.

Thanks Crasher

Just found this my 1.9 Audi a6 is showing the same driving problems and fault codes have asked my mechanic to order said part and hope it sorts it. Thanks again

1299cc
21-11-2008, 12:54 PM
A 2002 2.0 litre TDI? I don’t think so. It will be a 1.9 and either 100 or 130PS with an AVB, AVF or AWX engine. If you take the car to a garage and get a fault code read done it will probably show code “16685 P0301 Cyl. 1 Misfiring recognised” and “18074 P1666 Unit injector solenoid valve, no. 1 cyl. -N240 Electrical fault in circuit”. This is usually down to a faulty in head injector wiring harness which is VW part number 038 971 600 costs around £44 and takes an hour to fit.

Crasher

Many thanks for this info it sorted my 130 tdi A6 a treat and was done the same time as the cambelt so was a bit easier. Thanks for info again, my car is A1 again.
1299cc

Crasher
21-11-2008, 01:19 PM
That is good news.

swany99
26-01-2009, 05:08 PM
yes

Confedmarine
27-01-2009, 06:14 PM
Hi there,

did anyone get progress on this problem?

Have exact same problem.

Regards,

Confedmarine.

1299cc
28-01-2009, 10:33 AM
Hi there,

did anyone get progress on this problem?

Have exact same problem.

Regards,

Confedmarine.

Yes mine has been sorted if you have the fault codes as in the above post it requires the above loom or wiring. Mine had the problem over about a week at various times in a journey last Nov. The only way it would stop juddering was to stop switch off the engine and restart. Putting in the new wiring cured it but I cant tell you the cost as it was done at the same time as the cam belt change. It would appear the wiring is bent around in various places to fit and I guess that through heat/vibration it breaks. This problem has not re-occured.

swany99
28-01-2009, 05:28 PM
it could be as above, but i would check basic stuff first a i had the same problem and stripped wiring out and measured all wiring and injectors for continuity which was all ok it was the throttle inlet flat that was thick with carbon, cleaned and car was perfect after that.people have alo had this loom changed and injectors and still doing the same so advise low cost option first,clean flap/valve.

swany99
28-01-2009, 05:29 PM
also check same topic in passat b5 section

Confedmarine
28-01-2009, 08:43 PM
Thanks - as you say i'll try the low cost option first and, fingers crossed, this might be the solution.

Car running perfect otherwise; hate it when the litle things get in the way of a perfectly good motor.

Cheers,

Confed.

grbrown21
24-04-2009, 01:20 PM
I have an A3 Tdi that developed a fault, which is best discribed as esp light on and juddering when accellerator is used. We have many thoughts as to what it was....the computer readout would suggest an electrical fault causing misfire in No1 injector, we finally narrowed it down to a faulty head injector wiring harness..It was changed by a subaru mechanic and everything seems to be back to normal.

I will post the costs at a later date if anyone is interested.

Just thought i would pass on my dealings as without the forum we may still have a poorly car.

G

Crasher
24-04-2009, 01:26 PM
From page 1


This is usually down to a faulty in head injector wiring harness which is VW part number 038 971 600 costs around £44 and takes an hour to fit.

gilly7
13-05-2009, 07:15 PM
My Golf plus esp light is on, and wont go off. The garage come back with the code 01435 g201. Does anyone know what this is?

Crasher
13-05-2009, 08:20 PM
G201 is a pressure sensor inside the ABS pump and this is an extremely common problem, when I enquired the other day they had 440 of one particular type in stock. The pump has to be replaced. Is the car outside the VW warranty, was it bought from a VW dealer and always serviced there?

gilly7
18-05-2009, 07:18 PM
G201 is a pressure sensor inside the ABS pump and this is an extremely common problem, when I enquired the other day they had 440 of one particular type in stock. The pump has to be replaced. Is the car outside the VW warranty, was it bought from a VW dealer and always serviced there?
my car was out of its warranty in january unfortunatly, ive had it for 18 months with no other problems. It seems talking to people that this is quite a problem with vw/ seat cars. Do you know how much one of these pumps costs?

Crasher
18-05-2009, 11:03 PM
Give or take a few pounds, £1200 plus fitting.

elstowfreddie
15-08-2009, 12:59 PM
i have the same problem esp light coming on a miss firing i cleaned the throttle body out , changed the injector harness , it was fine for a week but now back to square one all the same problems !!!!!
suspect knackered injector ???
any views !!!!

elstowfreddie
15-08-2009, 01:04 PM
i have done all of the above changed the harness and cleane the throttle housing , loads of carbon build up , but i still have the same problems esp light coming on and no power/ miss firing !!
any one got any ideas ??

bearthebruce
15-08-2009, 02:57 PM
Without a scan of the car, it is really difficult to tell you what might be happening. Seems to me you have a problem air/fuel mixture. That could be caused by O2 sensors and a number of other elements. Please find someone to scan the car and post the results here. Then we might be able to help.

elstowfreddie
15-08-2009, 03:54 PM
cheers i will take it to my local vag garage and let them run a check , then post the results
cheers
lee

Crasher
17-08-2009, 01:38 PM
Elstowfreddie, I think you may have confused beartebruce there, you say you have cleaned out the throttle body and changed the injector harness so I get the impression you have a PD TDI engine, not a petrol engine so what you call the throttle body is actually the combined anti shudder flap and EGR valve so BB’s comment about the O2 sensor would not be applicable.

bearthebruce
17-08-2009, 01:46 PM
Crasher, where did you see that he said he has a PD TDI? I sure missed that. Or, do you know elstowfreddie from other posts and that is how you know he has the PD TDI?

I was right at the start - without an autoscan, my crystal ball is pretty close to useless!:biglaugh:

Crasher
17-08-2009, 02:04 PM
No, I don’t know him, I interpreted it from him having a heavily carboned up throttle body and having changed the injector harness, something that you would not often do on a petrol engine but is very common on the PD TDI.

Stan51tdi
30-10-2009, 10:10 PM
I just want to say thank you to all. I had this prob about 2 months on my AWX engine. Ive folowed this info and sorted it. Thanks for info again. :beerchug:

youngie33
03-02-2010, 07:36 PM
Hi everyone

Just like to add to this thread. I have a 2002 passat 1.9 TDI and over the last couple of months have suffered from the same problem. I was getting juddering and the ESP light coming on particularly whilst the engine was cold. The ESP light didn't always appear and the juddering was intermitent.

I took the advice of people within this thread and ordered an injector harness. Cost me £42 + VAT. Now I know nothing about cars, but I thought I'd give it a go and change it myself. Took me about two hours (and lots of cursing) but it has completely cured the problem. It's like driving a new car again. So if people are in doubt I would definately recommend changing this harness and try fitting it yourselves, put it this way it worked for me, just remember which bolts and clips you have removed and put them back in exactly the same place.

Thanks for all peoples input.:biglaugh: