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When does the amount of regens become a worry

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So I've a 2014 TDI VRS ESTATE. It seems to do (or keep trying ) regens quite frequently. I've done some reading and prefering to take the "just let the car do it's thing don't worry" advice. 

 

But, I wonder how many active regens will it try before issues start!? A Diesel probably wasn't the best choice, Mon - Thu is 3/4 short town trips a day 10 / 20 mins. Fri - sun longer hour long trips 60mph +. Most days it tries an active regen (higher idle / fans running on switch off) typically always just as the car gets back on the drive! 

 

 

Yes I had exactly the same when i moved to this house, most trips are about that length, just long enough for the conditions to be right for a regen but not long enough for it to complete.

 

It would spend a week doing it even after just compleying a 1000km drive towing a far bigger and heavier trailer than I should at wide throttle opening most of the way.

 

It bacame a joke so I paid to have the emissions fix rolled back, I had a reference point in my UK neighbour with the same engine but he had steadfastly refused the emissions fix, his car never had the fans running on shutdown and mine was like yours doing it constantly unless I drove back out again to allow the regen to complete and then 200 miles or less later it was doing it again, it would regen twice during an 800km autoroute trip where it would have been in a constant passive regeneration.

 

A year now since the roll back and 15k miles and I have noticed maybe 2 regens while driving and one interrupted one.

 

The cars are perfectly suited to your journeys if the emissions fix software is not installed.

  • Author
21 minutes ago, J.R. said:

Yes I had exactly the same when i moved to this house, most trips are about that length, just long enough for the conditions to be right for a regen but not long enough for it to complete.

 

It would spend a week doing it even after just compleying a 1000km drive towing a far bigger and heavier trailer than I should at wide throttle opening most of the way.

 

It bacame a joke so I paid to have the emissions fix rolled back, I had a reference point in my UK neighbour with the same engine but he had steadfastly refused the emissions fix, his car never had the fans running on shutdown and mine was like yours doing it constantly unless I drove back out again to allow the regen to complete and then 200 miles or less later it was doing it again, it would regen twice during an 800km autoroute trip where it would have been in a constant passive regeneration.

 

A year now since the roll back and 15k miles and I have noticed maybe 2 regens while driving and one interrupted one.

 

The cars are perfectly suited to your journeys if the emissions fix software is not installed.

 

Interesting, I have read about this, but I thought this was mk2? I'm an early MK3. I've stuck my VIN number in the checker and says I'm not affected?! So assume thats not something I can do 

Don't know, do you have a sticker in the boot showing the "fix" was done, or is your vehicle perhaps EU6 with Adblue?

I have MY2016, 1.6 TDI. My car was not part of dieselgate emission fix, its EU6, but on my last visit to official dealer, they did some kind of ECU update related to exaust system. Since then, my car does regens mostly every 150km of city or near city driving (drives of about 20km). On motorway or open road its less frequent. Before the update it was 250 to 300 in the city. Its very anoying but I try do comply with the regens. 
As a bonus, each few thousands of kms I need to extract the oli due to excesive diesel in it IF i allow the interruptions to happen on regular basis. Heck, I think oil dilutes even If i dont interupt any regens. Told this to the dealer a month ago, but nothing, they dont care really. "Its normal".

That would be very worrying to me and was a big concern when I was experiencing the frequent regens.

 

Which reminds me to check my oil level more often now that it is not self diluting!

 

An oil change is imminent but the last one must have been done after the rollback.

 

Your ECU update sounds like a Diselgate fix by stealth, deny the vehicle is affected then quietly modify them before it can be proved that they also cheated emissions.

 

From my experience the fix massively increases the amount of EGR activations and their duration which in turn requires more frequent regens, I stopped my EGR by using an Emulator/Simulatior but the ECU still thinks it is happening so it did not reduce the frequent regens until I had the "fix" rolled back.

 

For me and my engine (EU5 I believe) I think they were both good decisions, they cost probbaly £350 or £400 but I think will save me far more in the long run, just the reduced anxiety os worth the spend, I could not drive a car knowing it was diluting its oil, that I had to extend journeys and drive for no reason other than to let the ECU do its thing and to worry that any long journey might be the one where the EGR cooler gave up of the DPF finally got completely clogged.

 

Having VCDS to monitr things helps.

 

Sorry for any typos

  • 2 weeks later...
  • Author

Just bringing this back, I've noticed last week regens didnt happen, this week today I've done 4 trips ten minutes long and each time it's tried an active regen on shut down.

 

Last time I had time so waited it out, 15 minutes later the revs dropped so I assumed finished and a minute or so later turned off, however the fans came on, so I'm hoping the regen was done and just cooking after. 

 

I've got an odb reader coming soon, I may check with that on the regens but ultimately if this is common behavior I'm not sure the cars suited and I'll be kn the hunt for a petrol! Mpg is only about 40mpg at the minute so nothing amazing anyway! Shame as I do love the car really! 

Hi my VRS TDi  MK111 does now and again regen on the drive after a 30 mile drive . My question is how do you know its regenerating while your driving at say 75 mph on a duel carriageway?  I have no lights on the dash to say its doing one and unless you roll to a stop at say an island and the tick over stops high I would not know.

Never thought about diluting the oil problem before now.  Its on 119k

  • Author
44 minutes ago, Cap44 said:

Hi my VRS TDi  MK111 does now and again regen on the drive after a 30 mile drive . My question is how do you know its regenerating while your driving at say 75 mph on a duel carriageway?  I have no lights on the dash to say its doing one and unless you roll to a stop at say an island and the tick over stops high I would not know.

Never thought about diluting the oil problem before now.  Its on 119k

I wonder the same! I assume it's getting g the regen done when I do my long trips, but short of stopping and checking the revs like you say, it's impossible to know! 

 

That also reminds me to check the oil, I find it the hardest dipstick to read though lol! 

6 minutes ago, SkodaNewb said:

I find it the hardest dipstick to read though lol! 

 

Just why did the design of dipsticks change? They used to be so simple to read. Max - Min with a little cut out for each.

  • Author
31 minutes ago, Gammyleg said:

 

Just why did the design of dipsticks change? They used to be so simple to read. Max - Min with a little cut out for each.

I know. 

 

Look at this, to me the top right knobly bit has oil over it... So it's overfilled? Or does it have oil on it? Maybe not to look at but to touch it's oily, or is that where it hits the tube on the way down and up? Haha

 

 

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