Hi all

 

So after a 5 ½ months wait we’ve finally taken delivery of our Yeti Outdoor in Jungle Green, and absolutely love it. Love the colour, love the features, love the performance. Generally, well, we love it!

 

After only a week of having the car however, my wife noticed tonight that it’s already undergone an active DPF regen (with the fan continuing to run after turning off the engine, and generating an almost burning type smell). To put it in context, the car does a lot of short trips around town during the week, but also does on average 2 or 3 longer trips (between 30-40kms usually).

 

With this in mind, is it usual for a regeneration to kick in so soon (ie after only a week of driving), and can we expect this to be the norm going forward?

 

This is our first diesel car, let alone one with DPF, so would welcome any thoughts / feedback.

 

Cheers

Ours did/ does exactly the same. Almost a burning rubbery smell.

Was a bit worrying at first and I mentioned it to dealer.

As the car got older ( almost a year now ) it seems to have settled down. It still goes through regen as it should. Doesn't seem so often and the smell definitely better.

Perhaps burning smell as parts are new.

Good luck with the new motor, we love ours.

HTH

Could it be establishing a base line from which future is determined?

What you describe is normal and I would also agree with Jerbear's comment. You can minimise the frequency by using a low-sulphur fuel (eg. Shell V-Power) rather than supermarket stuff. You should get better MPG too.

Out here our big 2 supermarket fuels are Caltex and Shell based supplied.

Basically all Shell is retailed via 'supermarket' fuel outlets.

The Caltex based fuel has Vortex which they claim makes it special.....I, of course, believe them. (?)

I use either.

Hi what your descibeing  is normal, dealer told me that it is done intentially. + first/second  Service fixes the situation.

 

All Diesels need as many Miles/KM in their early days.

 

Suggest that you go exploring on weekends and get as many Miles as you can.

 

Diesels enjoy a longevity, if the are treated right.  Mine @ 37,500km regularily  gets 680/700 KM to 50/52 Litres  when new 550/590.

 

Love my "Snowman"

Edited 12 February, 201511 yr by Gobmax

Not sure where OP is, but in the EU all fuel is low sulphur (<10 ppm) by law. V-Power and other similar offers are more about enhanced detergent systems (and higher RON for gasoline).

For the OP, don't forget that before you got it the car will have done some short journeys, off the production line, moving around storage and transport facilities etc. It is simply clearing its throat!

Edited 12 February, 201511 yr by weasley

Regens occur every 500 miles or so. You don't usually notice them as they occur while you're driving along - the car actively tries to do it at motorway speeds if it can. If you suddently come off a fast road and stop within a few mins you will often find it's been doing one.

Thanks everyone for your comments - all very helpful.

 

I'm thinking for general driving around town (short trips to take the kids to school etc..) we'll get around in Sports (S) mode, to keep the revs up. Presumably that will help. Beyond that, we'll try and get as many km's into her as we can over the weekends! I'm hoping that should be enough to keep the filter clean and trouble free.

Edited 12 February, 201511 yr by ftmch

Can any member say they have actually had a need to replace a DPF or any significant issue?

I'm thinking for general driving around town (short trips to take the kids to school etc..) we'll get around in Sports (S) mode, to keep the revs up. Presumably that will help.

Waste of fuel if you ask me. Wait until the car tells you that it needs you to intervene, by illuminating the DPF light, before taking any action.

This paranoia about DPFs is getting a bit out of hand IMO.

Regens occur every 500 miles or so. You don't usually notice them as they occur while you're driving along - the car actively tries to do it at motorway speeds if it can. If you suddently come off a fast road and stop within a few mins you will often find it's been doing one.

Just further to this, do regens occur both as needed, AND periodically?

I guess what I'm asking is, will an active regen occur after 500 miles, as you've suggested, even if there has been effective passive regen occurring in that time?

Waste of fuel if you ask me. Wait until the car tells you that it needs you to intervene, by illuminating the DPF light, before taking any action.

This paranoia about DPFs is getting a bit out of hand IMO.

As I understand it though, by the time the DPF light comes on, it's going to require a specific act of intervention (ie driving at certain revs for a set period of time) to resolve the issue.

I'm looking at how I can better manage this in the course of our normal day to day usage (which involves a number of short trips during the week), to avoid even even getting to that point.

This is working on the premise that having the light come on and then dealing with it then is not the optimal way to manage a diesel engine with a DPF (which may be misinformed on my part).

Skoda issued a leaflet to dealers for customers reference how to care/cope with the DPF in a CR engine.

Fingers crossed, this link will work

http://s1304.photobucket.com/user/littleade2/media/Crregen_zpsd914a854.jpg.html

It SHOULD also state in your handbook what a regen is and how and when they happen. I got a separate pamphlet included in my Octavia handbook on dealing with a PD DPF engined vehicle.

I have went from driving 100 motorway miles a day (approx 2500 miles a month) for about 18 months, to driving 12-18 miles of urban driving a day with a few motorway trips of approx 40 miles a month for the last two years. Fingers crossed, I have never had the DPF light come on. The CR engine was designed with the dpf in mind. My PD was not, it was bolted on to extend the production life of the pd engine by enabling it to pass whatever the updated euro regs at the time were.

As long as you follow the guidance on the handbook, and follow the correct procedure when the dpf light comes on, you should be fine.

Just enjoy driving your vehicles.

Fin

Should have also mentioned that I use manual changes around town, or when Rev's fall below 1800/RPM.

 

The only thing I do is put my left hand on my Knee, when useing Auto, have tendancy to flick to Neutral.

 

If you are using Auto all the time mine @ 60Km/ph is down to 1500 Revs idle is just above 800.

So it's not working,, As a Diesel should.

 

Hope this helps and enjoy.

Fin69's link doesn't work for me.

 

The procedure to follow when the DPF light comes on is covered on Page 39 in the current edition of the owner's manual.

 

The FAQs on the Skoda UK web site advise you to refer to your dealer for advice about the DPF.  From what's been reported once or twice on this forum, that is by no means guaranteed to get you accurate advice (eg this thread, where the from advice dealer's mechanic was that for a different engine to that in the poster's Yeti.  Way to go, grease monkey!)

 

As I understand it though, by the time the DPF light comes on, it's going to require a specific act of intervention (ie driving at certain revs for a set period of time) to resolve the issue.

 

It requires a specific act of intervention when the light comes on.  Not before.  And it would be more accurate to say if the light comes on: in 4+ years of owning my diesel Yeti I've only seen it come on twice, and both times it went out within just a few minutes when I followed the documented procedure.  (The first three years of that four consisted largely of a three mile each way commute, plus a longer run or two each weekend.  Not the ideal DPF-friendly use profile, but I've had no problem with it in that time.)

 

This is working on the premise that having the light come on and then dealing with it then is not the optimal way to manage a diesel engine with a DPF (which may be misinformed on my part).

 

It is the procedure documented by the manufacturer.  Feel free to do otherwise if you think you know better, but I can't think of a likely reason for Skoda to choose to provide anything other than optimal advice to their customers.

 

If you really want to read up on it at a technical level and form your own conclusions then have a look at this thread: http://www.briskoda.net/forums/topic/316265-techy-dpf-info/

Just further to this, do regens occur both as needed, AND periodically?

I guess what I'm asking is, will an active regen occur after 500 miles, as you've suggested, even if there has been effective passive regen occurring in that time?

Regens will only occur on an as and when basis, the first option is the passive regen when the exhaust gas temperatures are high enough to burn off the soot as you are driving along, this normally happens if you are driving along at reasonable speeds for a while. The next step is the active regen, this is where the car uses pressure sensors in the exhaust, one upstream and one downstream of the DPF, when the difference between the two is high enough then it assumes the filter is blocking up and needs cleaning. It does this by injecting more fuel into the cylinders late in the combustion cycle to raise the combustion temperature and keeping the revs up to blow through the DPF. Once you have the DPF light come on then you are getting to the too late stage and really need to go for a nice long drive, as per the manual keeping the revs up to try and clean the DPF out. Once you have the engine management light comes on then it is dealer time so they can do a forced regen to try and save the DPF, otherwise it is new filter time, that should be a long way down the road though.

Ian

Just further to this, do regens occur both as needed, AND periodically?

I guess what I'm asking is, will an active regen occur after 500 miles, as you've suggested, even if there has been effective passive regen occurring in that time?

 

Mine does an active regen roughly every 250 miles. Maybe closer to 200 miles if driven really hard.

 

A while back I logged the EGTs (exhaust gas temps) with VCDS on my typical journey to work. Even though a large proportion of the journey is cruising on A roads at 50-60mph, the EGTs stayed below the temp range needed for passive regeneration to occur, which was quite a surprise. I think I'd need sustained motorway speeds for that to happen.

 

But the active regens seem to work just fine, very unobtrusive and don't affect driveability at all.