Jerking passat when cold and slow pull away

[coltam]

I have 56 plate Passat 2.0TDI,which 93000 on the clock.When i start the car up and drive i get this jerkyness from the car.the revs are between 1000 to 2300 when i get this,my seems to have no power on pull away.I accelerate but the car moves of slowly,its like the throttle response is laging or something.When the car warms up,it seems to be fine.Has any have any idea what it is and is their someone with the same issue

Col

[dunkley201]

Mine is a 140 TDI DSG. I have started getting what I can only call a "chunter" when the engine is cold on a light throttle. Slight, almost imperceptible, hesitations, maybe for the first mile or so. At first I thought is was the gearbox getting confused, but the problem is not gear specific. I have the car booked in to the dealer (Heron) on Saturday for an investigation over Monday/Tuesday. They want it for a few mornings with the engine cold for the investigation to be thorough. I was advised they may well update software on engine and gearbox as part of the work. I said "don't bugger the DSG as its working fine". Interestingly I was told the DSG will always behave differently for the first 50 miles or so after an update as it "adapts to the driver style" :confused:. Also, apparently, it is mandatory for all Passat (specifically Passat) faults such as this to be reported to VAG.
I will report back once they hand it back to me. (looking forward to the Polo loan car - NOT)

[gazza007]

I've had this problem on & off since having the car at 12 months, cleared up then came back but seemed to go after service last year, anyway been doing it again recently, it can really buck if using light throttle in 4th at 30mph, approx 1500 rpm but clears up after a few miles. It is like not having the choke on!!!, It is very intermittent, some days before & after work then not at all. I had them look at it again at the 3 year service last week, couldn't find anything or reproduce. They changed the fuel filter and did seem to have gone but I'm sure it was back again this morning anyway I will monitor & they have said to leave it with the for a few days if it is still there. Will be interested on how you get on as will pass the info to my dealer.
It passed the MOT & they replaced the sump balance shaft, seems very smooth now. Managed 46mpg doing 80+ on round trip to GF's in Scotland this weekend:biglaugh:

[coltam]

The sump balance shaft,was that done due to a recall? And what is the purpose of that shaft. I called my dealer and asked he their are any outstanding recalls,but was told that the only recall that the was needed was the fuel pump,which has been done already.

[Quatrelle]

It was done as part of a 'service campaign' - mine was done as part of a service.

It's been discussed at some length on here. Have a look at the jack cover in the boot and see if there are any stickers. The code for the balance shaft 'recall' is 13D8. If there's no sticker it doesn't mean it hasn't been done because not all engines needed it.

Most notably, balance shafts are/were used on Japanese (and other) m/cycle engines to smooth out the natural imbalance, and hence vibration, of twin cylinder engines.

[dunkley201]

Mine is a 140 TDI DSG. I have started getting what I can only call a "chunter" when the engine is cold on a light throttle. Slight, almost imperceptible, hesitations, maybe for the first mile or so. At first I thought is was the gearbox getting confused, but the problem is not gear specific. I have the car booked in to the dealer (Heron) on Saturday for an investigation over Monday/Tuesday.....

Just to update, I now have the car back. Apparently my symptoms fitted a VAG tech bulletin. This called for an update of the DSG software. It was then returned to basic settings in the workshop then road tested to set up dynamic basic settings. I was advised the DSG may appear different for the first 50 miles or so as it "adapts to my driving style". First impressions are good, I note it now changes up very early (in 4th by 30mph) on a light throttle - no bad thing I guess.
On another matter - my loan car was a Passat Highline! The 17" wheels and P Zeros made it a different car - sharper drive but plenty of bump thump road noise. (Mine has 16's with Dunlops)

[coltam]

Thanks for the info,so they had to update the DSG software?. I phoned the VW dealer who done my car service about a month ago and told them that the car is jerking when cold and i have also noticed that when i drive in manual mode on the DSG,it feels like when i change to second,it forces the gear in and get this knock in the gear box.So they have booked the car in for next Thursday-Friday.I paid them 1036 pounds for that service,so the last thing i need is problems like this.Did they charge you for your problem?

[dunkley201]

Did they charge you for your problem?

All done under warranty :approve:

[gazza007]

Cheers for this update. Last couple of mornings it has been apparent again but not as bad as usual. Anyway I have called my dealership & sent an email with your findings. Any idea on TSB number?
Cheers

Gaz

[dunkley201]

Cheers for this update. Last couple of mornings it has been apparent again but not as bad as usual. Anyway I have called my dealership & sent an email with your findings. Any idea on TSB number?
Cheers

Gaz

I understand the TSB No was 2016217\5 but they didn't give me this, of course! ;)

However, the problem re-occured yesterday morning, ok after a few miles as usual.

I understand if it's not fixed the next solution will be to replace the Mechatronic unit. It all has to be auth'd by VAG tho'. They didn't tell me this either! ;)

I am taking it on hols (with caravan) to Eire next week so will revisit the problem when I get back (if it has not "magically" healed itself)

[gazza007]

However, the problem re-occured yesterday morning, ok after a few miles as usual.


I will hold off my visit, to be honest since the service it is nothing like as bad & not as frequent, this happened last year. One thing of note is that they changed the fuel filter again this time which I think is a 60K thing.

Enjoy Eire, I'm off to GF's on the solway ;)

[SteveX]

I've had this jerking on mine since I got it last year, but it only ever does it after the car has been sitting in the sun for hours and the engine is cold. I only see this porblem in the summer. all last winter it was fine. weird or what?
My local VW garage has had the car in several times but they've never experienced the problem

Is there an auto choke that might be starving the engine of fuel perhaps?

[coltam]

Update:

Got my car back from the VW dealer today and they have updated the ECU and mechtronic software.They have told me that the jerkyness has gone BUT if it re-occurs,they will have to replace they mechtronic unit.They told me this does cause the car to jurk.

[dunkley201]

I will hold off my visit, to be honest since the service it is nothing like as bad & not as frequent, this happened last year. One thing of note is that they changed the fuel filter again this time which I think is a 60K thing.

Enjoy Eire, I'm off to GF's on the solway ;)

Gazza, I am back off my hol - all the time away (and about 700 miles - pulling a caravan for most of it too) the car never missed a beat! Will let you know how I get on over the next few weeks.

[SteveX]

Update:

Got my car back from the VW dealer today and they have updated the ECU and mechtronic software.They have told me that the jerkyness has gone BUT if it re-occurs,they will have to replace they mechtronic unit.They told me this does cause the car to jurk.

Hi, what VW dealer did the work on your car? I was thinking about getting my dealer to perhaps talk to yours to see if my problem might be related

[coltam]

Hey! I sent my car to Wantage VW. Two day later im sure i felt it again,but after that never again.Seems like the problem is Solved.Gave me a quote on what it cost for The Mechatronic unit, 1600 incl Labour.

[dunkley201]

Gazza, I am back off my hol - all the time away (and about 700 miles - pulling a caravan for most of it too) the car never missed a beat! Will let you know how I get on over the next few weeks.

Would you believe it! The car did it twice yesterday! I called Heron Newark and they have booked it in for 14th for a new Mechatronic unit

[coltam]

Could you tell me if the problem is solved

[gazza007]

Problem seems to have gone away again on mine ????

[the surfer]

Hey! I sent my car to Wantage VW. Two day later im sure i felt it again,but after that never again.Seems like the problem is Solved.Gave me a quote on what it cost for The Mechatronic unit, 1600 incl Labour.

If you are in London why did you send it all the way out to Wantage VW!? :confused: Wantage VW are shocking!

[SteveX]

Mine came back on Saturday, and I'm told it needs wiring loom replaced. This loom is somewhere underneath the wiper motor.
I've been complaning of this since I bought the car 12 months before the warranty ran out.

last week the symptoms got a lot worseand for a few miles the car wouldn't go above 30mph. After stopping and starting the engine it was ok again

[Leyburn Lad]

Hi all, new to the forum so go easy on me.
I have an '08 2.0TDI and had it services about 6 weeks ago. Since then I have experienced these symptoms when the engine is cold, for about the first 10 - 15 miles every day. Almost feels the same as a miss fire you sometimes get in a petrol. When you come off the over run, then slowly accelerating, i.e not full throttle, the car hesitates and seems to splutter. Didn't do it before the service!!!
Called leeds VW this morning and booked it in on the 21st.
I'l report back when it's fixed.

[coltam]

Thats were i had my major service done and they they were the cheapest.I had the cambelt changed,oil filter,dsg oil,brake fluid and forth variable service.I have noticed that when its a warm day it seems to start that jerking problem again,dont think the update helped at all.But on a cold day,it doesnt seem to do it at all.Now i know what SteveX is talking about.But the only probpem is my car i out of warrenty:(

[SteveX]

But the only probpem is my car i out of warrenty:(
It may not be too late....the Warranty ran out on mine march this year, but I've been complaining about these symptoms to VW since march 2008, and only now have the garage pointed the finger at this wiring loom as being the problem.
I'm speaking to VW customer service now in the hope that they will foot the bill, and I'm quite hopeful that they will... I hope to hear back from them today... i'll update you
for info this is the thread I started last year
http://www.vwaudiforum.co.uk/forum/showthread.php?t=45019

[the surfer]

Thats were i had my major service done and they they were the cheapest.I had the cambelt changed,oil filter,dsg oil,brake fluid and forth variable service.I have noticed that when its a warm day it seems to start that jerking problem again,dont think the update helped at all.But on a cold day,it doesnt seem to do it at all.Now i know what SteveX is talking about.But the only probpem is my car i out of warrenty:(

I've bought 2 cars from VW Wantage and the service I got was awful! They charged me for replacing discs and pads all round and a week later the brakes were screeching! Turns out they never did the work at all!

I was just interested why you'd travel 80 miles out of London to a VW dealer :confused:

[Quatrelle]

.... They charged me for replacing discs and pads all round and a week later the brakes were screeching! Turns out they never did the work at all!.....

And they are still VW agents? - how come?

[coltam]

I've bought 2 cars from VW Wantage and the service I got was awful! They charged me for replacing discs and pads all round and a week later the brakes were screeching! Turns out they never did the work at all!

I was just interested why you'd travel 80 miles out of London to a VW dealer :confused:


When i bought the car i never had this jerking problem.(car had 93000 on the clock)When i sent it in for the major service at Wantage and got it back, it started this jerking.But thanks for the info,wont be sending my car back there.Also noticed they did'nt even use the proper oil on my car when they done the service(they used Quantim oil,not sure if thats spelt right).I also asked them to tighten a engine or gearbox mounting but they didnt.When i pull away fast i can here this knocking noise under my feet. Any good VW dealers in London.????

[the surfer]

And they are still VW agents? - how come?

Apparently, according to the service manager, they sacked the mechanic who worked on the car. I very much doubt they did though.

I've heard that they were very, very close to losing their VW franchise status not so long ago. They are the most local VW dealer to me but I won't use them at all now. I travel a little further and go to Swindon VW who are far superior.


When i bought the car i never had this jerking problem.(car had 93000 on the clock)When i sent it in for the major service at Wantage and got it back, it started this jerking.But thanks for the info,wont be sending my car back there.Also noticed they did'nt even use the proper oil on my car when they done the service(they used Quantim oil,not sure if thats spelt right).I also asked them to tighten a engine or gearbox mounting but they didnt.When i pull away fast i can here this knocking noise under my feet. Any good VW dealers in London.????

I had a very long ongoing issue with them where they refused to carry out warranty work on a car I'd bought from them.

Unsure about dealers in London, although I'd imagine there are plenty! If you don't mind travelling then there are loads of independents about.

[SteveX]

Any good VW dealers in London.????
I'd recommend VW Citygate in Ruislip (West of West London)
They have a branch in High Wycombe as well

[dunkley201]

Would you believe it! The car did it twice yesterday! I called Heron Newark and they have booked it in for 14th for a new Mechatronic unit
Update: The dealer called me yesterday - I am now advised the new mechatronic unit was damaged on arrival and they have had to order another! :aargh4: Come next week I will have had this Highline loan car for a month already - I'll miss the heated seats!

[dunkley201]

Update: The dealer called me yesterday - I am now advised the new mechatronic unit was damaged on arrival and they have had to order another! :aargh4: Come next week I will have had this Highline loan car for a month already - I'll miss the heated seats!

I collected my car today - 38 days to change a Mechatronic unit! Yet again, was told to give it 500 miles or so to "adjust" to my driving style. Seems good so far. Will have to suck it and see..... At least the wait saved over a month's W&T on my car!

[gazza007]

Mine not done it for ages!! but I may have another theory. I think it may have something to do with being low on fuel. I can never recall it ocurring when I have more than 10 litres in the tank & just recently I have kept it fuller than normal. Will run it down & wait & see

[Stuart W]

Mine not done it for ages!! but I may have another theory. I think it may have something to do with being low on fuel. I can never recall it ocurring when I have more than 10 litres in the tank & just recently I have kept it fuller than normal. Will run it down & wait & see

I recall reading someone saying that the problem with the pump in the tank was more likely to manifest itself when low on fuel.

[gazza007]

When I first had the problem a couple of years ago they changed the pump as there was a recall & they also did the Tandem pump. Anyway tank is down to last 120 miles so will observe as I have to fill up again Friday as off to GF's in Scotland

[coltam]

Mine has stopped since the weather has changed. Seems when it's cold it doesn't do it at all. Strange!!! Well have had my car for two weeks as someone has ridden in the back of me and infor repairs. I have the new gti turbo for hire What a nice car

[dunkley201]

A resurrection of a previous thread: My DSG Mechatronic unit was replaced, collected 23/10 last year. (See previous posts on this thread #2 to#31) Yesterday, starting from cold in the afternoon with the sun giving an underbonnet temp of 16 deg, it started to "chunter" again! 2nd gear, about 2000 revs, like a kangaroo!. The indicated temp soon dropped to 12.5 deg. Such a shame as the DSG has been great up until now. I have the car booked in 6th April.... I'll let you know....

[gazza007]

Same thing happened to mine about 10 days ago, I'm convinced now that it has nothing to do with DSG. I've heard mention of fuel temp sensor poss causing the problem. This would make sense as I think it gets fooled and reduces the mixture like not having enough choke..

[coltam]

i have no problems as yet,just got my car back from the garge.They replaced all 4 injectors and the wiring loom,total cost of £2451.........:(:(:(:(

Car seems to have a better bottom end respons,and no smoke at the back when i accel.

[dunkley201]

A resurrection of a previous thread: My DSG Mechatronic unit was replaced, collected 23/10 last year. (See previous posts on this thread #2 to#31) Yesterday, starting from cold in the afternoon with the sun giving an underbonnet temp of 16 deg, it started to "chunter" again! 2nd gear, about 2000 revs, like a kangaroo!. The indicated temp soon dropped to 12.5 deg. Such a shame as the DSG has been great up until now. I have the car booked in 6th April.... I'll let you know....


The fault repeated itself a few more times. It went in for hesitation when engine cold but having been parked in the sun. (18 deg underbonnet temp, air temp really 16 or less) Last year VW authorised a mechatronic unit change for this same fault. I discussed this with the tech, saying I was convinced it was fuel related, not DSG. (say, for an old petrol car - it would be like fuel evaporation, etc) He found a ECU software update that covered engine hesitation when cold at 1500-2000 revs. That has now been done - let's see!

[gazza007]

The fault repeated itself a few more times. It went in for hesitation when engine cold but having been parked in the sun. (18 deg underbonnet temp, air temp really 16 or less) Last year VW authorised a mechatronic unit change for this same fault. I discussed this with the tech, saying I was convinced it was fuel related, not DSG. (say, for an old petrol car - it would be like fuel evaporation, etc) He found a ECU software update that covered engine hesitation when cold at 1500-2000 revs. That has now been done - let's see!

Thanks for this info, any idea on the TSB so I can pass this on?

[dunkley201]

Thanks for this info, any idea on the TSB so I can pass this on?

It was TPI 2021604/2. Sorry for the delay - Heron took ages to get back to me with copy Invoice (didn't pay, on warranty still)

[gazza007]

It was TPI 2021604/2. Sorry for the delay - Heron took ages to get back to me with copy Invoice (didn't pay, on warranty still)
Cheers for this, no recent evidence of it happening? I wonder if it was fixed at last service

[dunkley201]

No further instances so far - still waiting....;)

[DSG4ME]

I think I'm getting this also, it only happens when the temp is below 70, once I reach that it's ok, and it doesn't seem to do it again until another cold start the next day, it's real faint right now, and I too thought it was perhaps the gearbox still doing up it's laces, thing is do I risk having them pull it apart and potentially making it worse, or live with it for now, I might try a new derv and air filter, perhaps one of them maybe upsetting the settings.

[dunkley201]

I think I'm getting this also,

Mine was only when engine cold but car having been in the sun - therefore an erroneously high underbonnet temperature for first mile or so. hth

[DSG4ME]

Has the SW fix, fixed it though?

[dunkley201]

No further instances so far - still waiting....;)

As I said above, no problem so far...

[gazza007]

Mine kicked off again today, fine this morning but this afternoon with outside temp 20.5 itstarted to buck for about 2 miles even with cruise on at 30. Will mention TSB at next service.
Its never been a major problem as it is so intermittent as you could repaet the environmental conditions on another day & it will be fine

[DSG4ME]

Yeah, sometimes it's best not to touch it, I'm still not sure mines doing it tbh, it might just be the engine and box not waking up together at the same time, something else I noticed today, is the car fitted with a dump valve, I've been hearing it phish as the box changes up, it's not loud and it doesn't do it any other time other than when changing up.

[martin1810]

No dump valve as such, but it can dump vacuum by opening a valve and letting some air in. That causes the VNT turbo to reduce the vane angle and so lower boost pressure.

[DSG4ME]

No dump valve as such, but it can dump vacuum by opening a valve and letting some air in. That causes the VNT turbo to reduce the vane angle and so lower boost pressure.


So that would be normal then, and nothing to worry about?

I asked my mate last night if his Touran does it, he said it does, but he's only just noticed it 86k, I've had the cover off and checked the air filter, that's clean, so until I get out in her today and have a keen listen I won't know if I've a problem brewing or not yet.

[chesterman]

Hello guys
I have recently bought a nice 2006 Passat 2.0 TDI 140 with a DSG box, its quite high mileage but has been looked after.
I have read through this thread with great interest

When I bought the car I had no problems at all, but now I am having the same issues that have been described here.
The only changed i have made are a KN air filter and I have changed the diesel fuel filter, and if i am not mistaken, the issue has arisen since then..

When I begin to drive the car from cold or when it’s been standing, I seem to get a hesitation or jerk at about 1500rpm. I would say with a light throttle, does not seem to happen when accelerating properly, but if I try and stay at about 20mph in 2nd gear at roughly 1500rpm, it jerks, it’s as if the car is trying to change gear but can’t ?
As soon as it warms up its fine, the car runs superb and the DSG gearbox is sublime. I have owned other auto box cars and I have been very impressed with the DSG box
Is there a definitive opinion on this issue now?
Thanks

[RichardSEL]

It's definitive that DSG ATF and filter should be changed every 40k miles. I'd eliminate the box before going any further. If if hasn't been done then it should.

Is your jerk only under load?

Is your KN air filter the oiled one? Engine might respond to a re-adaption in VCDS, I'm not a Derv head so not sure what adaption scripts for TDi engines are available in current version of VCDS. I know some are there in the current version though...

[chesterman]

Hello
Thanks for the reply
I live on a sort of one way system, i can only do 20mph when leaving the area, so i notice it first thing in the morning mostly when i leave for work
Keeping to 20mph, the car is doing approx 1500 to 2000rpm in 2nd gear, and it tends to jerk at that rev range and speed, its not under load, more of a constant speed and feathering the throttle as it were.
To me it seems as if the car is " hunting " or lacking fuel or something, its weird
After a few minutes its fine, strange one !

[niall campbell]

My A6 if parked on a slope, front facing or back overnight will start as if there is air or leak in my fuel system , leaking injector etc

When replacing the diesel filter, did you replace the " O " rings supplied ?? You could smear the new O rings with fresh oil to help seal from air intake/ fuel leak

You could also smear some Vaseline over the fuel pipes at the filter to see if that helps, or indeed look to see they are pushed on correctly , not pushed on too hard over the raised stop points, allowing fuel to leak & air getting in.

If those checks are okay, then look at replacing the air filter back to an original one

However, if the problem is at a cold start up and disappears , it sounds like air leak, injector leak , glow plugs at a push, coolant temp sender unit

[chesterman]

My A6 if parked on a slope, front facing or back overnight will start as if there is air or leak in my fuel system , leaking injector etc

When replacing the diesel filter, did you replace the " O " rings supplied ?? You could smear the new O rings with fresh oil to help seal from air intake/ fuel leak

You could also smear some Vaseline over the fuel pipes at the filter to see if that helps, or indeed look to see they are pushed on correctly , not pushed on too hard over the raised stop points, allowing fuel to leak & air getting in.

If those checks are okay, then look at replacing the air filter back to an original one

However, if the problem is at a cold start up and disappears , it sounds like air leak, injector leak , glow plugs at a push, coolant temp sender unit

To be honest it has not been too bad past couple of days, the weather has been cooler, not sure if that matters.
Yes I replaced the o ring when i changed the fuel filter, perhaps I should use a better quality fuel filter
Yes the KN filter is the oiled type, perhaps i may change it back to see if it makes any difference
Cheers

[Quatrelle]

Best to do one thing at a time and check if it works, otherwise you'll never know what the problem was - apologies if I'm teaching granny here.

[chesterman]

To be honest it seems to have been ok this week, but its been cooler here. Today I went back to me car in work and it showed 22 degree outside temperature, and it did straight away !

Could be something to do with outside temperatures ?

Cheers

[RichardSEL]

See if there's been anything reported in a VCDS Autoscan? Where are you? I'm SE London
Here's the URL for someone perhaps closer who'll do it for beer tokens:
https://www.google.com/maps/d/viewer?mid=zwQHurSsCMz8.kMTwqF0PoXwc&msa=0&ll=56.231139%2C-2.779541&spn=3.493691%2C10.821533&iwloc=0004c505cfcb6158e0447

[chesterman]

Nice one, I am in chester, Cheshire :o

[Crasher]

Slowly but surely we are starting to get early MQ250 DSG boxes need new clutch packs. The kit is under £400 (genuine VAG only for now) and you must do the fluid and filter so typically it is a £1K ish job PLUS the DMF's go eventually but you can get these from LUK, it makes common sense to do the two together even if they don't bear on each other as in a conventional gearbox. I drove an early 8P A3 yesterday, 2L TDI DSG, and it has terrible judder when pulling away cold, especially up an incline. It is booked in for next week.

[chesterman]

I don't think its related to the gearbox, when the outside temperature is lower, mine is fine. That probably explains why when i bought the car in late march it was fine, this has only started over the past month when the weather has got warmer. Today it was warm out, 22 degrees and jerked at about 1500rpm in 2nd gear under slight load, only does it once then goes away as the engine warms up I suppose

The car had a new flywheel fitted before xmas and i was told the oil and filter were changed at the same time ?

If it were a petrol engine i would describe it more like " miss fire " ?? it feels like its missing

Thanks guys

[chesterman]

I have been monitoring this for the past couple of months
Its still doing it but not all the time, and I now feel it is the gearbox.
I am now convinced it depends on outside temperature. When the outside temperature is cooler, it does not seem to occur. Could outside temperature affect the gearbox perhaps ?

Just to recap, when accelerating it does not occur, it only seems to happen between 1500-2000 rpm when trying to maintain a constant speed, its as if the gearbox tries to change up a gear but cant, only way i can describe it best is a sort of miss, the engine misses ??

Many thanks again !

[Crasher]

Do you have any drive train fault codes stored?

[DMitch16]

The Americans have had access to the MQ250 packs (or equivalent) for a few years now and even have an upgrade with an extra ring which is meant to improve the shift and resistance to wear. I had a loose tripod which made the downshift very clunky in the high gears but it went away when the joint was replaced. Of course the DSG must be meticulously serviced every 40k and the fluid replaced and level correctly set. Mine's at 180k at present and still behaving well.

[chesterman]

Do you have any drive train fault codes stored?

I only have a basic diags tool, i will give it a check this weekend

Cheers

[chesterman]

The Americans have had access to the MQ250 packs (or equivalent) for a few years now and even have an upgrade with an extra ring which is meant to improve the shift and resistance to wear. I had a loose tripod which made the downshift very clunky in the high gears but it went away when the joint was replaced. Of course the DSG must be meticulously serviced every 40k and the fluid replaced and level correctly set. Mine's at 180k at present and still behaving well.

Mine is not jerky when changing gears up and down, its only affected at 1500rpm approx when not under load, i do feel its the gearbox, its as if it tries to change up and cant. When accelerating its fine

I will change the oil i think

Cheers

[RichardSEL]

This is a short thread on how to reset a DSG box:
VWVortex.com - Need Help Quick - DSG Reset Issue (http://forums.vwvortex.com/showthread.php?6997728-Need-Help-Quick-DSG-Reset-Issue)

This is an explanation of the DSG gearbox codes as they relate to the "02E" series of boxes:
Identification characters, aggregate assignment, ratios (Octavia II) (http://workshop-manuals.com/skoda/octavia-mk2/power_transmission/gearbox_02e-dsg/technical_data/technical_data_for_the_gearbox/identification_characters_aggregate_assignment_rat ios_%28octavia_ii%29/)

[chesterman]

I have connected up the diags tool this morning, it’s only a VS 450 type from eBay
No stored codes for the transmission at all

I definitely think its outside temperature related though.
Yesterday when I set off for work in the morning it was around 18c according to the car outside temperature gauge and it did it straight away
Returning home at night the temperature had dropped to 15c and it drove perfect
I do not understand at all

[Crasher]

It sounds just like the 2004 2 litre TDI A3 we did a few weeks ago, a new clutch pack solved the problem.

[chesterman]

It sounds just like the 2004 2 litre TDI A3 we did a few weeks ago, a new clutch pack solved the problem.

Yes I do think its the gearbox

Why do you think its not afflicted with the problem when its cool outside ?

Cheers

[Crasher]

The clutch pack is very oil sensitive so the ambient temperature can affect the way it works. When a new clutch pack is installed it is vital to flush the old fluid out as well as possible.

[chesterman]

The clutch pack is very oil sensitive so the ambient temperature can affect the way it works. When a new clutch pack is installed it is vital to flush the old fluid out as well as possible.

I have checked the service book and I do not think the gearbox oil has been replaced for at least 30k, i will have it changed with a new filter and take it from there
Apart from a few hick ups when i drive the car when its warm, the gearbox is silky smooth and I am impressed with it

Cheers

[Crasher]

It is a gamble box it could work, it is a lot of money down the drain if it doesn't work.

[RichardSEL]

If you have a service stamp for DSG oil change 30k ago, then doubt it'll be that. If there's no record at all in the car's life then go for it. And filter. VW recommend every 40k
Better you have a proper diagnostic done, either VCDS or at dealer with VAS to see whether there's any codes stored. Either current or historic. I don't know how effective your "scan tool" is

For VCDS, I'm in SE London. here's a map for someone who might be more local to you
Here's the URL:
https://www.google.com/maps/d/viewer?mid=zwQHurSsCMz8.kMTwqF0PoXwc&msa=0&ll=56.231139%2C-2.779541&spn=3.493691%2C10.821533&iwloc=0004c505cfcb6158e0447

[chesterman]

It’s a very contradictory issue.
It only seems to occur when I first use the car when it’s been standing. As soon as the engine reaches operating temperature the gearbox operates fine. It only seems to occur when the engine is cold and the outside temperature is warm.
When the engine is cold and it’s cool outside also it seems fine
I really don’t understand it

[chesterman]

If you have a service stamp for DSG oil change 30k ago, then doubt it'll be that. If there's no record at all in the car's life then go for it. And filter. VW recommend every 40k
Better you have a proper diagnostic done, either VCDS or at dealer with VAS to see whether there's any codes stored. Either current or historic. I don't know how effective your "scan tool" is

For VCDS, I'm in SE London. here's a map for someone who might be more local to you
Here's the URL:
https://www.google.com/maps/d/viewer?mid=zwQHurSsCMz8.kMTwqF0PoXwc&msa=0&ll=56.231139%2C-2.779541&spn=3.493691%2C10.821533&iwloc=0004c505cfcb6158e0447

Cheers
I have dropped a member near me a PM

[chesterman]

Is it possible this could be connected to the Tandem Pump is it ? I drove down to Poole to catch the ferry to Guernsey the bank holiday weekend
After a while I noticed that when accelerating hard from 70mph to say 80mph there was a distinct judder or shuddering, felt quite strange, only when accelerating hard

I did notice when i changed the fuel filter a couple of months ago that the fuel was very black, the filter was also, i thought it maybe crud from the tank ?

Any thoughts please ?

Cheers

[Crasher]

Is it possible this could be connected to the Tandem Pump is it ?

Yes, highly likely. If the fuel filter was black, the inside of the tank will be filthy, engine oil is crossing over into the fuel system.

[chesterman]

Nice one thanks ! Is this a DIY job do you think ?

Cheers

[Crasher]

Yes it is easy to change. What you do about the contamination is another matter. We drain the tank with the sender/lift pump out, wipe it out clean, blow out the lines and change the fuel filter. if you don't, in time it will clean itself to some extent.

[chesterman]

I have changed the fuel filter today and it was black. I also noticed black particles in the diesel fuel left in the filter container

Would this be the engine oil ?

Cheers

[Crasher]

You need a new tandem pump.

[chesterman]

You need a new tandem pump.

Cheers, thanks for the response. Is there any instructions on here on how to do it please ?

[Crasher]

Remove and refit, it's easier than a fuel filter.

[chesterman]

Well the past month or so since the weather has cooled down the car and gearbox are back as they were when i bought it back at the beginning of April, the gearbox is perfect and performs superbly !

All very odd !!
I have not changed the tandem pump as yet, it only seems to affect it at motorway speeds and i have not driven it on a motorway since August

I am planning a trip to Belgium over Christmas so may change it in the near furure

Cheers
Many thanks

[RichardSEL]

What gearbox?

[chesterman]

What gearbox?

DSG Gearbox

[RichardSEL]

Change your ATF and filter. Should be done every 40k miles (same goes for Tiptronic BTW)

[chesterman]

Yeah will do thanks
Will leave it now until the spring when the outside temp rises above 15c, its fine when its cooler

Cheers

[RichardSEL]

Both DSG and Tiptronic have a working temperature.
That will be reached irrespective of the season

The reason for ATF change is that it looses viscosity, and gains contaminents.
Particularly you will see fine iron filings around the ATF pan magnets. Those that have been captured safely that is.

[chesterman]

Both DSG and Tiptronic have a working temperature.
That will be reached irrespective of the season

The reason for ATF change is that it looses viscosity, and gains contaminents.
Particularly you will see fine iron filings around the ATF pan magnets. Those that have been captured safely that is.

yes i can understand that but i only have and have had issues with mine in the summer months when the outside temperature was above 15c
The past couple of months since autumn has arrived its been perfect
Cheers

[RichardSEL]

Quite. As temperature decreases, so viscosity increases.
Still, if you don't want to do it, don't. They're your clutch plates...

I'd be starting from some known datum point if I were you
You could also do a fresh auto-box adaptation in VCDS to see whether
that helps?

Or just see whether there's any error code that's been reported in the past.
If so, clear it to see whether it returns

[chesterman]

Quite. As temperature decreases, so viscosity increases.
Still, if you don't want to do it, don't. They're your clutch plates...

I'd be starting from some known datum point if I were you
You could also do a fresh auto-box adaptation in VCDS to see whether
that helps?

Or just see whether there's any error code that's been reported in the past.
If so, clear it to see whether it returns


Yes thanks for your input, it’s been a really strange one

it only ever occurred when I used my car when the engine was cold and the outside temperature was warm. As soon as he engine warmed up and I am assuming the gearbox oil warmed up it stopped. So if it was warm outside and the engine was hot, I am assuming the gearbox oil temperature would increase and therefore the viscosity decreased, but in those circumstances it would perform faultlessly.
It only occurred when the engine was cold and the outside temperature was warm

Now it’s cold outside, there are no issues whether the engine is warmed up or cold
It’s a strange one indeed
Being as there are no issues with it at the moment I am leaving it alone until the spring, I will have the oil changed then

I do not know anyone with VCDS unfortunately

Many thanks again

[RichardSEL]

Got your clarification.

re: VCDS I'm in SE London close to Blackwall Tunnel / A2.
So if you're passing PM me