DPF Cleaning

[eribaMotters]

Now there's a thought. Wouldn't it be good if we got an indicator on the MFD telling us a regen was due in x miles time like you get for a service with a countdown etc. You could then have a start option via the scroll wheels so you could fit it in with your journeys. There, solved the problem of DPFs forever.....

 

To sensible to catch on.

 

Colin

[gumdrop]

I found outwhat the smell was, the car had started a regen, so

when I drove throught the car park puddle the water hit a

red hot exhaust and whoosh!

[littleade]

A new party piece!

[imart143]

It is old topic but i am new in vw world and have 2012. yeti 2.0 tdi CR 81 kw. Buyed it from 1.st owner one week ago. It Have 190 000 km. scanned dpf activity with vag dpf pro apk on android and dont understand results. On board comp no errors, but after scanning thru odb2 connector, app shows 90% of fillnes i suppose. Can someone explain this data and what 90% actually means? End of life?

Help ;-)

 

[pinkpanther]

Hi imart143 and welcome to Briskoda

 

I have this app and your screenshot indicates an active regeneration is due / scheduled (? was previously interrupted).

 

Driving the car at reasonably high revs should see the DPF cannister graphic turn red and the % bar indicator will fall until it reaches around 20%. At this point the cannister graphic will turn back to grey / green and the active regeneration will be completed.

 

The oil ash indicator relates to how full the DPF actually is, and how close to 'end-of-life'.

 

I've posted on my experience with VAG DPF previously and will search it out and post up a link.

 

My car is 4 years old and has covered 73k miles. The oil ash level indicator tells me my DPF is 46% full.

Edited 17 August, 2018 by pinkpanther

[pinkpanther]

More here: https://www.briskoda.net/forums/topic/443518-vag-dpf-app/?do=findComment&comment=4995856

[pinkpanther]

My habit of running the fuel tank almost empty led me to realise the active regeneration will not start if the fuel light is on - found my DPF was 120% full after squeezing the last few drops of fuel out of the tank

 

Regeneration starred immediately on refuelling

 

Interested to note hitting 120% did not put the DPF light up on the dashboard

[imart143]

Than should i go to ride on highway? 

Maybe 50 kms in one direction wit full diesel canister and drive agressive?

I read somewhere to drive at least 70 km/h in 5.th gear and 3000 rpm for 20-30 minutes. Is that right?

[pinkpanther]

I tend to find 15-20 minutes at more than 2000 RPM gets the job done

 

3000 RPM in my car equates to around 90 MPH / 145 km/h (in 6th gear), so I tend to stick with 4th gear, at more moderate road speeds.

[imart143]

In morning when i was going to town, dpf warning appeared. Went to gas station and filled fuel to max. Drived 10 kms thru town and warning disappeared. Strange..

Percentage dropped..

 

[NigOVO]

Hi all,

 

Reading one of my previous threads it was commented that not all diesel yetis have a dpf filter! Is this right or do they all have them? 

 

Just asking because mine can be quite smokey at times. Mines a 2010 2.0tdi. 

[imart143]

Should have.. all yetis have common rain engines.. In top center of picture is dpf..

 

[kenfowler3966]

Yes, all Yeti's have them.

It is earlier diesels that didn't eg my wifes 53 reg fabia. By the time the Yeti came out they had to be fitted to meet emission regs.

 

[Ootohere]

Just be aware that all the TDI Yeti's left the factory with a DPF and should still have a DPF.

There are those that have Deleted DPF's & done various other things since 2009 on, so if buying a 'Pre-loved' Yeti or any other Euro 5 or 6 diesel you might get less 'hardware' than what was fitted from the factory, and the Software might not always be 'factory approved' or as it was from the factory.

[imart143]

I read that Life of dpf is around 150000-250000 kms

depending of driving condition..

after that there are solutions: 

new dpf - most expensive

cleaning dpf: Not so much expensive. In my country about 350€

removing dpf and changing software: Cheapest but harmful for ecology. 

Cleaning in my country service:

 

[amwphotos]

On 18/08/2018 at 11:08, imart143 said:

In morning when i was going to town, dpf warning appeared. Went to gas station and filled fuel to max. Drived 10 kms thru town and warning disappeared. Strange..

Percentage dropped..

 

Not strange at all, dpf regen is supposed to happen under normal driving conditions so that the user doesn't usually notice. It would confuse people of they had to drive differently once a month. You don't have to do anything different to normal driving other than ideally not turn the engine off once it's started doing the regen so that it can finish properly, otherwise it'll probably try and start again next time you drive.

 

The need to drive at 3000rpm etc is rubbish. The engine uses a different fuel injection timing to heat up the dpf.

[Ootohere]

A couple of weeks ago in the hot weather after just using my 66 plate 2.0TDI SCR DSG SEAT the car was running badly after a few days of only being used a few miles at the time.

Then the blocked DPF light came on.  5 miles of a run later it was off.

The car is great and does 50 to over 60 MPG when doing long runs. and can drink a gallon of diesel ever 25 miles or so if doing just 5 x 5 mile runs or worse 3 mile runs.

(sips the AdBlue when out doing long trips.)

[imart143]

@Offski

your car have adblue tank? euro 6 norm? it is newer one, since 2015-6. i think..

what do you mean to sips adblueon  before long trip? adblue canister have to be filled everythime.

[imart143]

1 hour ago, amwphotos said:

 

Not strange at all, dpf regen is supposed to happen under normal driving conditions so that the user doesn't usually notice. It would confuse people of they had to drive differently once a month. You don't have to do anything different to normal driving other than ideally not turn the engine off once it's started doing the regen so that it can finish properly, otherwise it'll probably try and start again next time you drive.

 

The need to drive at 3000rpm etc is rubbish. The engine uses a different fuel injection timing to heat up the dpf.

i was scared to see dpw yellow icon, it means that dpf is blocked or regeneration started automatically? not to worry about yellor dpf icon?

[Ootohere]

What i mean is the car new November 2016 came showing 7,000 mile AdBlue range, on filling up 1st & 2nd time went to 7,500 mile range. Maybe fuller.

On the next fill up showing 8,000 mile range & was no fuller than the time before and now is just sipping the Ad-Blue not dropping every 500 miles as it was, but then no longer getting used as a going to the shops car, short trips very often.

Better fuel consumption after the Factory oil was out at a Variable Service. It was like clotted cream even though it had about 2 litres of VW507 in in the crazy Service Interval.  It is a lease car and a service plan so i am not going to service sooner than the service plan allows.

Edited 20 August, 2018 by Offski

[amwphotos]

1 hour ago, imart143 said:

i was scared to see dpw yellow icon, it means that dpf is blocked or regeneration started automatically? not to worry about yellor dpf icon?

Obviously a warning light needs attention, but you have the dpf app so you can see what's going on. Just go for a drive long enough for the dpf to run uninterrupted and finish it's cycle, not in stop start town traffic, 40min should be plenty. If your milage is high and the oil ash is getting high that will need more attention than just a long drive!

 

My point is dpf cycle happens with normal driving, you don't have to drive around in 4th at 70 or anything ridiculous. My car starts and finishes a dpf cycle on my way to work, 30min drive on A and B roads.

[Sanqhar]

Two points. 

 

My understanding is that cars that have had the ‘fix’ actively regenerate more, there are fewer passive regenerations. The greater amount of soot being produced is also one of the reasons for egr failures which are now being fixed under the trust building measures. 

 

Secondly my car shows no signs when an active regeneration is taking place other than the fan running. I don’t normally notice the fan until the engine is switched off which of course stops the regeneration. However, although restarting and going for a run at reasonable revs will not continue the regeneration it will burn off the extra diesel that was pumped into the engine to do the regeneration. This is important as the diesel from stopped regenerations runs down the bores and dilutes the engine oil. This is a good reason to check your oil level more frequently, if it s rising you have a problem. 

 

Tom

[amwphotos]

6 hours ago, Sanqhar said:

Two points. 

 

My understanding is that cars that have had the ‘fix’ actively regenerate more, there are fewer passive regenerations.  

 

Secondly my car shows no signs when an active regeneration is taking place other than the fan running.

 

Point 1, not necessarily. My other halfs "fixed" rapid does regens not very often at all, less frequently than my non cheat effected Octavia.

 

Point 2, the engine doing a regen will idle at 1000rpm instead of 750rpm, so you can tell. Or, if you get vag dpf app you can also monitor when it does it.

[langers2k]

16 hours ago, Sanqhar said:

My understanding is that cars that have had the ‘fix’ actively regenerate more, there are fewer passive regenerations. The greater amount of soot being produced is also one of the reasons for egr failures which are now being fixed under the trust building measures. 

 

Just to add some detail, the fix is aiming to reduce NOx emissions. The way it does this is to open the EGR valve further to allow more exhaust gas (less oxygen) into the combustion chamber and lower the combustion temperature. Lower temperatures will reduce NOx production but there is a trade off, namely it will create more particulate matter (soot).

 

As the EGR needs to work more and open further, if it was partially clogged pre-fix then this can be enough to cause fault codes and need replacement. There will also be more frequent DPF regeneration simply because more soot is being collected. I expect most EGR's that have been replaced under the TBM were at least partially clogged before the update was applied

 

17 hours ago, Sanqhar said:

Secondly my car shows no signs when an active regeneration is taking place other than the fan running. I don’t normally notice the fan until the engine is switched off which of course stops the regeneration. However, although restarting and going for a run at reasonable revs will not continue the regeneration it will burn off the extra diesel that was pumped into the engine to do the regeneration. This is important as the diesel from stopped regenerations runs down the bores and dilutes the engine oil. This is a good reason to check your oil level more frequently, if it s rising you have a problem. 

 

There are many reasons for the fans coming/staying on or the idle revs increasing, DPF regeneration is just one of them.

 

Personally, I wouldn't worry unless the car often or always has an increased idle RPM and the fans remain on when turning the engine off.

[ejstubbs]

On 20/08/2018 at 09:44, imart143 said:

i was scared to see dpw yellow icon, it means that dpf is blocked or regeneration started automatically? not to worry about yellor dpf icon?

 

The owner's manual tells you what to do when the DPF light comes on.  You can download the manual for your version of the Yeti, and in your preferred language from here.

 

In simple terms, when the DPF light comes on  you need to go for a 'special drive' as described in the manual to trigger an active regeneration.  The DPF light will go out one the active regen has finished.

 

In the seven plus years that I had my 2010 Yeti 140 4x4, the DPF light came on twice.  On both occasions the light went out after taking it for a 'special drive' - IIRC I just took a longer route home both times it happened, and deliberately stayed in lower than usual gears while I did it.  (FWIW, for the first four years my most regular use of the car was commuting five miles to and from work.  According to some, this kind of use kills diesels.  My experience suggests that you shouldn't necessarily believe everything you hear.)

 

For reference, the 2012 English editions of the Yeti owner's manual state as follows:

 

Quote

 

If the [DPF] warning light  comes on, this means that soot has accumulated in the diesel particle filter because of the frequent short distances.

 

In order to clean the diesel particulate filter, the vehicle should be driven at an even speed of at least 60 km/h at engine speeds of 1 800 - 2 500 rpm for at least 15 minutes or until the warning light goes out with the 4th or 5th gear engaged (automatic gearbox: position S) when the traffic situation permits it. This increases the exhaust temperature and the soot deposited in the diesel particle filter is burnt.

Always pay attention to the valid speed limits.

The [DPF] warning light goes out after the successful cleaning of the diesel particle filter.

If the filter is not properly cleaned, the [DPF] warning light does not go out and the [glow plug system] warning light begins to flash. The following is displayed in the information display: Diesel-particle filter: Owner's manual! appears. Afterwards the engine control
unit shifts the engine into the emergency mode, which only has a reduced power output. After switching the ignition off and on again the [exhaust inspection system] warning light comes on.

Have the vehicle inspected without delay by your specialist garage.