My 1.6 TDI is over-eager. If I lift right off the throttle approaching (E.g.) a rounabout it tugs away with the same enthusiasm it had before I lifted my foot.  I have to brake -often quite hard to get it to slow down and do as it is told.  

 

This aint right is it?   Or is it a feature of the 1.6 tdi?  Anyone else had it and know the cause?  Nothing to do with using cruise control cos I never use it..In the past I would think sticking throttle but they don't work like that now do they?

 

Any idea gratefully accepted.

Hi HopeImRight

It's unlikely that you have a problem. Leaving the car in too high a gear - e.g. as you approach a roundabout/junction - will cause the anti-stall feature of the engine to 'kick in' causing the car to accelerate. Have a look at these links :

http://www.briskoda.net/forums/topic/283652-free-accelerating-monte-carlo/?hl=%2Banti+%2Bstall#entry3363531

http://www.briskoda.net/forums/topic/220025-new-octavia-16-cr-tdi-elegance/?hl=%2Banti+%2Bstall

The information contained therein might help to reassure you.

Regards

Alan

From what speed?

I think I know what you're talking about as I get exactly the same thing if I don't change to a low enough gear. It usually happens turning out of junctions where I don't have to stop and leave it in third instead of changing down to second, my excuse is I usually drive a DSG so forget to change gear sometimes. Think it's perfectly normal though,you may just need to change your driving style?

Thank you for your replies and links.

 

I must say I am deeply unimpressed. 

 

Why is it so vital that the engine does not stall?  Not the end of the world and not very likely after 50 years of driving experience.  Or do they hope to sell a lot to driving schools?

 

I must admit it seems I've made a mistake.  They have turned a diesel engine into a petrol engine.  If I'd wanted a petrol I've have bought one.  It is already clear to me that 105 HP from a 1.6 CR are not the same as 105 HP from a 1.9 PD and the difference in the quality of the foot/pounds is even worse.  Where is that lovely push in the back ?

 

And now I discover the car knows better than me what speed and gear I should be in.  It sends me into roundabouts or bends too fast by ignoring that I've lifted off causing an increase of steering involvement AND causes me to brake while unstable (by not braking in a straight line only) AND then I have to change gear at the same time.  Brilliant .  Only some sort of prat could see this as a good plan.  Or it is a lash-up to hide serious undriveability in the engine design.

 

BUT it should please the dealers.  Plenty of work on brakes and clutches and probably worse.

 

It is warrantied for 4 years and will receive little consideration or respect till it goes at three years eleven  months.

I have developed a dislike for this car.  !00 per cent different from my brilliant Octavia.  Shame.

Sorry for the rant.

I must admit it seems I've made a mistake.  They have turned a diesel engine into a petrol engine. 

 

It sounds like the opposite to me. Diesels have more torque so are always going to "push" against the brake if you are going too slow for the gear that you are in or have not depressed the clutch when needed.

 

There's an automatic coming out next year

It's a Common Rail diesel.

They just develop the power differently.

It's much smoother than the old PD units, so that's why it feels a bit petrol like.

It's progress...

This is not meant to be a criticism of anyones driving ablity but there always has to be a degree of adjustment to anyones driving style when moving from one car to another. Its rare for two different cars to drive the same.

 

If the car is running away approaching junctions then you are in too high a gear. There is no way a car "can send you" into a roundabout too fast, it is you sending the car into the roundabout too fast.

 

Instead of trying to overcome the anti-stall feature by braking you either need to dip the clutch earlier and coast (not recommended) or simply change down a gear earlier than you are used to.

 

I hope this doesn't come across as a pop at anyones driving skills, more my advice on how you might be able to overcome your displeasure in a car/engine that lots of others don't have the same issue with. 

 

There could of course be a genuine issue with the car, and for that reason I would err on the side of caution and get it checked over.

What sort of approach speed and gear selection are we talking here? 

*****If the car is running away approaching junctions then you are in too high a gear. There is no way a car "can send you" into a roundabout too fast, it is you sending the car into the roundabout too fast.*****

 

Disagree.  If the car continues to pull, with my foot off the gas, then obviously it will send me into the roundabout at a higher speed than I wanted or planned for.  If I am approaching a country roundabout I expect to go into it at the speed I choose, with no power on, in gear, watching the joining roads, and if clear, and appropriate, to power on and get through it at the speed I decide. Slow in fast out.

 

I do not want or need the car to decide to keep the power on and pull strongly and send me into the roundabout at too high a speed causing me to brake or declutch while negotiating the roundabout.  To do either or both in such a movement is bloody poor driving.

 

Braking or de-clutching when going round a roundabout appears in which driving manual exactly.?  And would that be de-clutching to change down or just for the lift of revs by diconnecting the drive? Both would destabilize the car and interfere with steering control.

 

If the engine is likely to stall travelling at 40 mph in gear then it needs re-designing.  I've been driving long enough to sense exactly when or if a lower or higher gear is needed based on every input factor.  One factor I don't need is a car that decides to keep tugging when I decide I don't want it to.

 

I would much prefer the blasted thing to actually stall if it wants to, and is so poorly set up, then I could learn its lousy power characteristics and drive accordingly

 

*****What sort of approach speed and gear selection are we talking here?******

 

Sorry I really don't concentrate on recording my speed and gear selection to that extent especially while entering roundabouts or bends.  They are instinctive now after 50 years without an accident driving in many countries and always at appropriate speed  designed for "firm progress"----got that from the IAM when for many years I was an "assessor" in my branch--totally forbidden to say "instructor".

 

Lastly briefly--I hire cars 4, 5, 6, times a year--all sorts--many countries --never noticed this bit of "progress" before.

 

Sorry I really don't concentrate on recording my speed and gear selection to that extent especially while entering roundabouts or bends.  They are instinctive now after 50 years without an accident driving in many countries and always at appropriate speed  designed for "firm progress"----got that from the IAM when for many years I was an "assessor" in my branch--totally forbidden to say "instructor".

 

Lastly briefly--I hire cars 4, 5, 6, times a year--all sorts--many countries --never noticed this bit of "progress" before.

 

I'm very surprised that you don't know the gear you're using when going in to a roundabout (not knowing road speed is fair enough), if my car did something during cornering that took me by surprise checking the gear I'm in would be the first thing I check once I have it back under control !

 

I've not driven a 1.6 TDI myself so I honestly couldn't tell you if it behaves massively different to the few 1.9's i've driven (albeit very briefly), but I do know that the Mini Cooper D I took my lessons + test in would 'pull' when letting the clutch up from slow speeds, I never found it to cause a problem when engine braking though hence why I asked what gear/road speed. You'll have to excuse the cheek of my asking, I'm a comp sci engineer by trade so I'm used to making sure I have the relevant sample data before analysing a fault.

In answer to your original question: "please confirm I have a problem"

I'd confirm and say YOU do indeed have a problem, not the car

My friend had a 1.6TDI as a courtesy car for a couple of weeks. We went for a spin and he was able to drive it totally normally.

I had a 1.6 CR TDI Ibiza FR for a few weeks as a courtesy car.

 

I never experienced this problem.

 

What gear are you approaching the roundabout in?

 

Something to note is that the 5 speed box mated to the 1.6 105 has quite high gearing so where as in a previous car you may have been able to approach in 3rd or 4th you would need 2nd or 3rd in this one.

 

It honestly sounds like you are in too high gear so it's not that Skoda are forcing you to go faster or anything it's just that these engines try to idle at 1000rpm under load so if you are in a gear and at a speed that tries to push the revs lower than this of course it's going to try and keep the engine ticking over at least 1000rpm and push the car forward.

 

If you sit with car in first and hand brake on then start to bring the clutch up you will see the revs 'jump' to 1000rpm. The car seems programmed to do a fast idle to aid low speed manoeuvres without needing to use any throttle. This is higher than most other (including the 1.9) diesels rev at idle.

Phil

+1 on which gear and what speed.

You say you don't pay attention and it's instinct, then mention you were an IAM instructor which is a somewhat interesting

Many thanks to all the courteous responders especially AAK for the links  and Phil-e for a helpful  reply which showed he has fully delveloped reading and comprehension skills.

 

Adios.

+1 on which gear and what speed.

You say you don't pay attention and it's instinct, then mention you were an IAM instructor which is a somewhat interesting

 

Yeah I mean I drive a DSG but I still know what gear I am in all the time!

 

Phil

Many thanks to all the courteous responders especially AAK for the links  and Phil-e for a helpful  reply which showed he has fully delveloped reading and comprehension skills.

 

Adios.

 

What do you mean by that reply?

 

Not sure how to interpret that.

 

Phil

'I would much prefer the blasted thing to actually stall' - I recently had a hair-raising drive with a colleague in a Transit minibus. It is a 2.0 diesel. He left it in too high a gear approaching a roundabout and it stalled at about 25mph. The power steering was then lost and we almost did not make the roundabout at all - I guess the power assistance to the brakes was similarly affected.

Phil-E is surely correct that revs will increase to about 1000rpm. I believe this is called 'anti-stall'. Most cars these days have electronic 'drive-by-wire' accelerators, so the computer 'brain' is likely to try to intervene to prevent stalling. This does not, however, mean that the car will accelerate by its-self beyond a 'fast idle' of 1000rpm. ie If the car accelerates beyond 1000rpm by its-self, it is faulty; if you try to break below 1000rpm and it resists stalling, your car is not faulty.

*****If the car is running away approaching junctions then you are in too high a gear. There is no way a car "can send you" into a roundabout too fast, it is you sending the car into the roundabout too fast.*****

 

Disagree.  If the car continues to pull, with my foot off the gas, then obviously it will send me into the roundabout at a higher speed than I wanted or planned for.  If I am approaching a country roundabout I expect to go into it at the speed I choose, with no power on, in gear, watching the joining roads, and if clear, and appropriate, to power on and get through it at the speed I decide. Slow in fast out.

 

Most cars, petrol or diesel, brand new or 20 years old will roll along in first gear without pressing the accelerator.

 

If the car "continues to pull with my foot off the gas" then quite simply you are in the wrong gear.

 

Why is it so vital that the engine does not stall?

 

 

I recently had a hair-raising drive with a colleague in a Transit minibus. It is a 2.0 diesel. He left it in too high a gear approaching a roundabout and it stalled at about 25mph. The power steering was then lost and we almost did not make the roundabout at all - I guess the power assistance to the brakes was similarly affected

 

Would have thought an assessor for IAM would have known this?

Can't add anything of worth, but have to agree it very much sounds like the wrong gear is in use and the car is trying to correct it before it stalls. OK stalling a car isn't the end of the world, but could cause an accident if this happens at the wrong time and in the wrong place and IMO it's fair to assume that is why the anti-stall technology was introduced?

if this is happenning in normal conditions and not near-stalling conditions i would have the Throttle Body checked for starters.

if this is happenning in normal conditions and not near-stalling conditions i would have the Throttle Body checked for starters.

 

Throttle body? On a 1.6 Common Rail turbo engine? Don't think it has one!

Sorry, i was not aware that diesel engines don't have a TB. never owned one. i just googled it and it seems you are right Phil-E.

 

let me rephrase then: if this is not happenning in near-stalling conditions, i would get it to the dealer to have it checked.