2.0 TDi BKD engine

After having the turbo replaced last month I now have a different problem. Slight hesitation and a bit of a stutter around 1700-200rpm. I know it can't be the turbo as this is new.

The problem manifests itself as a lack of go when travelling on fast road/dual carriageway at say 70-80 5/6th gear doing around 2000rpm with a light throttle. If you lift off then re-apply throttle it hesitates/stutters.

Driving it hard it seems ok. Pulls well and cleanly in all gears but at low speeds, pulling away etc it seems not quite right.

Any ideas? Injectors :( ?

You don't have a DSG gearbox do you?

Was thinking injectors based on what you've said. If it had been a petrol I'd have said that was a coilpack issue! Are you able to check if any faults have been logged?

Can you make it do this every time? And what happens at say 70 if you then let off the throttle, but then engage 4th gear, and then try applying throttle?

My 07 PD TDi Vrs Stutters a little, I assumed it was the Gasket thingie...( euro 4 compliant??)

That's EGR restriction yes, for daft EU reg compliance.

This sounds like a fuel delivery problem to me. Hence wondering if the effect of a higher RPM in a lower gear made the problem go away, or less noticeable/problematic.

That's EGR restriction yes, for daft EU reg compliance.

Cheers Steve, nothing to worry about then

As long as it's a slight hesitation (as I'd term it), around turbo spool-up so 1700-1900rpm say - then yes, it's become a 'charactistic' on the PD170.

You don't have a DSG gearbox do you?

No. 6 Speed Manual

Was thinking injectors based on what you've said. Are you able to check if any faults have been logged?Can you make it do this every time? And what happens at say 70 if you then let off the throttle, but then engage 4th gear, and then try applying throttle?

Fault codes not read yet. Service/Cambelt/MOT on Monday [-sweating lots/]. Engine can feel a little lumpy at higher RPM whilst accelerating (or it could be the road I often try it on, or a slightly unbalanced wheel - that's what it feels like)

This sounds like a fuel delivery problem to me. Hence wondering if the effect of a higher RPM in a lower gear made the problem go away, or less noticeable/problematic.

Yeah. However, it seems to pull well and strongly when you put your foot down. It's just the range of throttle that's most used when you are driving in a normal everyday sedate manner that is most problematic. Rev range 1700-2200ish. Perhaps the throttle potentiometer is faulty?

And another thing - all I run on is Esso Fuels. So no cheap supermarket fuel etc.

Edited 13 July, 201114 yr by Golf-Fiend

Hmm...just found this thread on the Seat Cupra site. Might be a similar problem (he wishes!) Seat Engine Stutter

Fault codes not read yet. Service/Cambelt/MOT on Monday [-sweating lots/]. Engine can feel a little lumpy at higher RPM whilst accelerating (or it could be the road I often try it on, or a slightly unbalanced wheel - that's what it feels like)

So it's only been doing this since the car was serviced?

So it's only been doing this since the car was serviced?

No, it's this coming Monday that the above is being done. However, from all the anecdotal evidence on all the forums about a 2.0 TDi stutter - there is no conclusive cause or solution to this problem. Just guesswork and conjecture and the expensive swapping of components like MAF's and Injectors. It seem that most cases do not throw and log a fault code. Seems like a bugger of a problem to pin point.

OK, with you. Yes, from reading that thread it's not an easy one to solve! See if there's any codes and go from there. Could be worth doing some logging on VCDS, if you can repeat the problem. That could highlight an issue with fuel delivery, or a MAF issue.

MAF I would only expect when you're accelerating and at higher revs. I had a broken one on a Mk4 1.8T Golf and it was like hitting a rev limiter at about 5k.....

Im having the same problem with my octavia 1.9 tdi pd. stutters at low revs almost like fuel starvation but its an intermitent problem and like u say only happens whilst drivng lightly like in busy traffic where as if you speeding up onto a motoway then no problems. Had my car in skoda on wednesday and no faults... any ideas??? just got a full service 1000miles ago but problem has been noticable before

Could be anything, Camshaft sensor, MAF (which doesnt usually throw up a code) fuel filter problem, fuel pump problem... list is endless.

maybe speak to the stealer, I had an issue like you describe on my 56 1.9 tdi, they were aware of the issue for my engine and did a ecu update. It has been fine since.

Just found this thread... I've been having something that sounds similar on my 2009 2.0 140 PD, so let's see if this sounds familiar.

Driving along, fairly constant revs ... more noticeable at dual cabbageway/motorway speeds... lift off slightly and then re-apply the throttle (e.g. if you're just moderating your speed)... and there's a noticeable "ugh" moment before the car pulls properly. Floor it and it's fine, it'll just surge onwards. Probably more noticeable when the engine is warm (which may also be linked to why it shows up more on motorways since I can't get to one with a cold engine).

It's been to the dealer several times, no fault found. The best they can suggest is that it might be a dodgy fuel filter or - long shot - "you could always try a premium fuel, I don't think it's that but some people swear by the stuff". I'm from the all-fuel-has-to-meet-the-same-standard school, so even if V-Power et al *are* better, ordinary supermarket fuel shouldn't cause a problem.

Anyway... sound familiar to anyone else experiencing this? If so then at least I have an angle for the dealer - fuel filter, MAF, fuel temperature sensor, etc.

As an aside, I've also had a really, really lumpy idle from cold (complete with blue smoke) once or twice, and on one occasion the car wouldn't start at all, so I'm really suspicious about fuel delivery in general. No fault can be found, of course, because modern mechanics live and die by fault codes... but, at a mere two years of age and 30+k miles, this car isn't looking like a keeper to me...

As an aside, I've also had a really, really lumpy idle from cold (complete with blue smoke) once or twice, and on one occasion the car wouldn't start at all, so I'm really suspicious about fuel delivery in general. No fault can be found, of course, because modern mechanics live and die by fault codes... but, at a mere two years of age and 30+k miles, this car isn't looking like a keeper to me...

Strangely enough I had exactly this with mine a few weeks ago, completely out of the blue, it hasn't done it before or since. I scanned it with VCDS shortly afterwards and no codes stored or obvious problems. It was exactly like it was running on 3 cylinders for a few seconds after starting with clouds of smoke. An injector sticking perhaps?

Driving along, fairly constant revs ... more noticeable at dual cabbageway/motorway speeds... lift off slightly and then re-apply the throttle (e.g. if you're just moderating your speed)... and there's a noticeable "ugh" moment before the car pulls properly. Floor it and it's fine, it'll just surge onwards. Probably more noticeable when the engine is warm (which may also be linked to why it shows up more on motorways since I can't get to one with a cold engine).

As an aside, I've also had a really, really lumpy idle from cold (complete with blue smoke) once or twice, and on one occasion the car wouldn't start at all, so I'm really suspicious about fuel delivery in general. No fault can be found, of course, because modern mechanics live and die by fault codes... but, at a mere two years of age and 30+k miles, this car isn't looking like a keeper to me...

Could be a number of things, having had this problem on a "few" diesel cars over the years I would check in this order

Fuel filters

Fuel (I have always filled with BP ultimate diesel, company fuel card , so the fuel thing is cr@p)

EGR valve

(and in the case of my VRS) dodgy injector

In fairness they increase in cost, the injector cost the most as it caused an electrical fault and took out half the loom with it!

The injector thing started out of the blue on a trip to belgium, it got me, coughing and spluttering, all the way there and back and then broke down right outside my house, couldn't restart it etc.... and the RAC diagnosed it straight away!

Just found this thread... I've been having something that sounds similar on my 2009 2.0 140 PD, so let's see if this sounds familiar.

Driving along, fairly constant revs ... more noticeable at dual cabbageway/motorway speeds... lift off slightly and then re-apply the throttle (e.g. if you're just moderating your speed)... and there's a noticeable "ugh" moment before the car pulls properly. Floor it and it's fine, it'll just surge onwards. Probably more noticeable when the engine is warm (which may also be linked to why it shows up more on motorways since I can't get to one with a cold engine).

It's been to the dealer several times, no fault found. The best they can suggest is that it might be a dodgy fuel filter or - long shot - "you could always try a premium fuel, I don't think it's that but some people swear by the stuff". I'm from the all-fuel-has-to-meet-the-same-standard school, so even if V-Power et al *are* better, ordinary supermarket fuel shouldn't cause a problem.

Anyway... sound familiar to anyone else experiencing this? If so then at least I have an angle for the dealer - fuel filter, MAF, fuel temperature sensor, etc.

As an aside, I've also had a really, really lumpy idle from cold (complete with blue smoke) once or twice, and on one occasion the car wouldn't start at all, so I'm really suspicious about fuel delivery in general. No fault can be found, of course, because modern mechanics live and die by fault codes... but, at a mere two years of age and 30+k miles, this car isn't looking like a keeper to me...

Have you been borrowing my car

Sounds suspiciously familiar to me. Sometimes I have a lumpy idle too but not with smoke. Clears up after a few moments though. I've had fuel filters changed regularly so I don't think it is that. My car is currently at the garage for MOT and cambelt fitting so I've printed out the link for the fuel temp sender and left with with the man. He'll look at it for me so I hope I'll get an answer soon about that possible aspect.

Sometimes I think my car does not have the 'zip' I would expect. Seems a little flat. Sometimes, after a wash it goes like stink. That could be a placebo effect. Who knows.

One thing that does strike me about this problem - it seems very very common. So common I'm thinking it's just a characteristic of this particular engine. Forum boards are littered with this issue for the 2.0 VAG TDi. I'm sure there are 1000's out there with the same issue but don't subscribe to forums so it is not reported.

I have heard that the ECU actually cuts off the fuel to the engine under no throttle/demand so it just might be on the borderline when throttle is feathered? Just a theory. Perhaps a failing throttle potentiometer? The area that is most used could wear causing poor connection/dirty signal?

Doesn't Ben@Shark have a map to fix this exact issue?????

See this thread.

Doesn't Ben@Shark have a map to fix this exact issue?????

See this thread.

Ummmmm. Yes, for a PD 170 engine in a VRS. Not the 2.0 TDi BKD engine, though perhaps a remap might help, but it's always best to find the underlying issue before remapping. Plus I don't want a remap due to insurance costs and the way I drive nowadays.

So, had MOT [ ] today and cambelt done [ ] and had the garage look into the issue. No fault codes. No problem with fuel temp sender. Mech seems to think that there are loads of engines suffering this issue and that there is no one fix for it, but many slight improvements. 1/ ECU software update 2/ new MAF 3/ New temp sender 4/ New valve thingy on top of fuel filter 5/ New (Cleaned) EGR etc - however he said that he didn't think that any one in particular would cure it but perhaps make it a little bit better each time. The issue at hand is a small one and I think for now I'll 'drive around it'. He took the car for a drive and found it in very good order.

Taking it for a blast this evening I replicated the problem at 3k rpm on the dual carriageway doing 75/80 in 5th. Lift off and re-apply throttle and it is there as clear as day. Can't do it at 3k rpm in 2nd/3rd at slower speeds as the gearing interferes. It does now seem that the issue has gone up by 500rpm though :wonder:

Out of interest, the original 6.5yr old cambelt at 49k miles (yes I know, I know - overdue) was just like a brand new one. If the printed text was not worn then you'd be hard pressed to tell the difference from the brand new one. Likewise with the tensioner and rollers. Good as new. Seems almost pointless IMHO. Got to be done though to appease the Profit Gods of VAG.

Sorry - saw Auric's post about a VRS and jumped to conclusions.

Might be worth a chat with Ben - you don't have to have more power!

Sorry - saw Auric's post about a VRS and jumped to conclusions.

Might be worth a chat with Ben - you don't have to have more power!

Hey Andy, that's OK. Wasn't meaning to be harsh or anything like that

Still don't want to remap due to insurance costs. Even a 'sort out the stutter' map will count as a non standard map and cause issues with the insurance co. Also with the extended warranty as well. Might well still chat to Ben as he seems pretty clued up and might have some pointers as to why this happens and how to fix it without maps etc.

Thanks,

Nick

Hmmm. . . More interesting findings:

Part Throttle Hesitation

and

Throttle Hesitation Fix

Seems worth a punt. Any one with part nos for this and associated costs?

Just been reading through and it seems clear theres alot of people having this very problem with all the dieselson offer through out the octavia range. Would anyone know where to start with changing parts to ammend the problem. Surely the "VAG" group havnt ignored this problem even though many people I speak to who were huge supporters of the volkswagon groups have all said there more recent vehicle across the range are becoming overpriced, and a lot less reliable than people make the VW group sound to be. Anything after the mk 4 golf seems to have many issue which are costly. Could this slight stutter be caused by turbo problems or anything like that???